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Cnooc Ltd. – ‘20-F’ for 12/31/20 – ‘EX-101.SCH’

On:  Thursday, 4/22/21, at 6:02am ET   ·   For:  12/31/20   ·   Accession #:  950103-21-5896   ·   File #:  1-14966

Previous ‘20-F’:  ‘20-F’ on 4/22/20 for 12/31/19   ·   Latest ‘20-F’:  This Filing   ·   24 References:   

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 4/22/21  Cnooc Ltd.                        20-F       12/31/20  178:20M                                    Davis Polk & … LLP 01/FA

Annual or Annual-Transition Report by a Foreign Non-Canadian Issuer   —   Form 20-F   —   SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 20-F        Annual or Annual-Transition Report by a Foreign     HTML   1.85M 
                Non-Canadian Issuer                                              
 2: EX-8.1      Opinion of Counsel re: Tax Matters                  HTML     64K 
 6: EX-13.1     Annual or Quarterly Report to Security Holders      HTML     44K 
 3: EX-11.1     Statement re: the Computation of Earnings Per       HTML    100K 
                Share                                                            
 4: EX-12.1     Statement re: the Computation of Ratios             HTML     47K 
 5: EX-12.2     Statement re: the Computation of Ratios             HTML     47K 
 7: EX-15.1     Letter re: Unaudited Interim Financial Info         HTML    129K 
16: EX-15.10    Letter re: Unaudited Interim Financial Info         HTML     42K 
17: EX-15.11    Letter re: Unaudited Interim Financial Info         HTML     42K 
18: EX-15.12    Letter re: Unaudited Interim Financial Info         HTML     43K 
 8: EX-15.2     Letter re: Unaudited Interim Financial Info         HTML    127K 
 9: EX-15.3     Letter re: Unaudited Interim Financial Info         HTML    123K 
10: EX-15.4     Letter re: Unaudited Interim Financial Info         HTML     84K 
11: EX-15.5     Letter re: Unaudited Interim Financial Info         HTML     82K 
12: EX-15.6     Letter re: Unaudited Interim Financial Info         HTML     67K 
13: EX-15.7     Letter re: Unaudited Interim Financial Info         HTML     44K 
14: EX-15.8     Letter re: Unaudited Interim Financial Info         HTML     43K 
15: EX-15.9     Letter re: Unaudited Interim Financial Info         HTML     43K 
25: R1          Document and Entity Information                     HTML     83K 
26: R2          Consolidated Statements of Profit or Loss and       HTML    136K 
                Other Comprehensive Income                                       
27: R3          Consolidated Statements of Financial Position       HTML    148K 
28: R4          Consolidated Statements of Changes in Equity        HTML    100K 
29: R5          Consolidated Statements of Cash Flows               HTML    118K 
30: R6          Corporate Information                               HTML    151K 
31: R7          Statement of Compliance                             HTML     46K 
32: R8          Changes in Accounting Policies and Disclosures      HTML     57K 
33: R9          Summary of Significant Accounting Policies          HTML    177K 
34: R10         Acquisition and Other Venture                       HTML     49K 
35: R11         Oil and Gas Sales and Marketing Revenues            HTML     57K 
36: R12         Segment Information                                 HTML    234K 
37: R13         Profit Before Tax                                   HTML    115K 
38: R14         Finance Costs                                       HTML     83K 
39: R15         Key Management Personnel's Remuneration             HTML    267K 
40: R16         Five Highest Paid Employees                         HTML     83K 
41: R17         Tax                                                 HTML    157K 
42: R18         Earnings Per Share                                  HTML     72K 
43: R19         Dividends                                           HTML     61K 
44: R20         Property, Plant and Equipment                       HTML    119K 
45: R21         Right-Of-Use Assets                                 HTML     91K 
46: R22         Intangible Assets                                   HTML    105K 
47: R23         Investments in Associates                           HTML     85K 
48: R24         Investment in A Joint Venture                       HTML     85K 
49: R25         Equity Investments and Other Financial Assets       HTML     71K 
50: R26         Other Non-Current Assets                            HTML     46K 
51: R27         Inventories and Supplies                            HTML     56K 
52: R28         Trade Receivables                                   HTML     47K 
53: R29         Cash and Cash Equivalents and Time Deposits With    HTML     47K 
                Maturity Over Three Months                                       
54: R30         Trade and Accrued Payables                          HTML     46K 
55: R31         Contract Liabilities                                HTML     50K 
56: R32         Other Payables and Accrued Liabilities              HTML     54K 
57: R33         Loans and Borrowings                                HTML    178K 
58: R34         Lease Liabilities                                   HTML     53K 
59: R35         Provision for Dismantlement                         HTML     70K 
60: R36         Share Capital                                       HTML     99K 
61: R37         Reserves                                            HTML     49K 
62: R38         Related Party Transactions                          HTML    155K 
63: R39         Retirement Benefits                                 HTML     47K 
64: R40         Note to the Consolidated Statement of Cash Flows    HTML    106K 
65: R41         Commitments and Contingencies                       HTML     57K 
66: R42         Financial Instruments                               HTML     87K 
67: R43         Concentration of Customers                          HTML     55K 
68: R44         Financial Risk Management Objectives and Policies   HTML     72K 
69: R45         Charges on Assets                                   HTML     45K 
70: R46         Subsequent Events                                   HTML     46K 
71: R47         Approval of the Financial Statements                HTML     46K 
72: R48         Summary of Significant Accounting Policies          HTML    246K 
                (Policies)                                                       
73: R49         Corporate Information (Tables)                      HTML    145K 
74: R50         Oil and Gas Sales and Marketing Revenues (Tables)   HTML     54K 
75: R51         Segment Information (Tables)                        HTML    230K 
76: R52         Profit Before Tax (Tables)                          HTML    116K 
77: R53         Finance Costs (Tables)                              HTML     82K 
78: R54         Key Management Personnel's Remuneration (Tables)    HTML    267K 
79: R55         Five Highest Paid Employees (Tables)                HTML     83K 
80: R56         Tax (Tables)                                        HTML    148K 
81: R57         Earnings Per Share (Tables)                         HTML     72K 
82: R58         Dividends (Tables)                                  HTML     59K 
83: R59         Property, Plant and Equipment (Tables)              HTML    111K 
84: R60         Right-Of-Use Assets (Tables)                        HTML     86K 
85: R61         Intangible Assets (Tables)                          HTML    100K 
86: R62         Investments in Associates (Tables)                  HTML     86K 
87: R63         Investment in A Joint Venture (Tables)              HTML     85K 
88: R64         Equity Investments and Other Financial Assets       HTML     66K 
                (Tables)                                                         
89: R65         Inventories and Supplies (Tables)                   HTML     55K 
90: R66         Contract Liabilities (Tables)                       HTML     48K 
91: R67         Other Payables and Accrued Liabilities (Tables)     HTML     54K 
92: R68         Loans and Borrowings (Tables)                       HTML    180K 
93: R69         Lease Liabilities (Tables)                          HTML     52K 
94: R70         Provision for Dismantlement (Tables)                HTML     68K 
95: R71         Share Capital (Tables)                              HTML     88K 
96: R72         Related Party Transactions (Tables)                 HTML    143K 
97: R73         Note to the Consolidated Statement of Cash Flows    HTML    106K 
                (Tables)                                                         
98: R74         Commitments and Contingencies (Tables)              HTML     52K 
99: R75         Financial Instruments (Tables)                      HTML     81K 
100: R76         Concentration of Customers (Tables)                 HTML     54K  
101: R77         Financial Risk Management Objectives and Policies   HTML     56K  
                (Tables)                                                         
102: R78         Corporate Information (Details)                     HTML    260K  
103: R79         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     50K  
                Impairment of financial assets (Details)                         
104: R80         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash   HTML     46K  
                and cash equivalents (Details)                                   
105: R81         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     44K  
                Share-based payment transactions (Details)                       
106: R82         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     46K  
                Leases (Details)                                                 
107: R83         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     45K  
                Convenience translation (Details)                                
108: R84         ACQUISITION AND OTHER VENTURE - Share purchase      HTML     61K  
                agreement (Details)                                              
109: R85         ACQUISITION AND OTHER VENTURE - Equity transfer     HTML     49K  
                agreement (Details)                                              
110: R86         Oil and Gas Sales and Marketing Revenues (Details)  HTML     60K  
111: R87         SEGMENT INFORMATION - Segment results (Details)     HTML    153K  
112: R88         SEGMENT INFORMATION - Geographical information      HTML     70K  
                (Details)                                                        
113: R89         SEGMENT INFORMATION - Information about major       HTML     54K  
                customers (Details)                                              
114: R90         Profit Before Tax (Details)                         HTML    102K  
115: R91         Finance Costs (Details)                             HTML     64K  
116: R92         Finance Costs - Narrative (Details)                 HTML     49K  
117: R93         KEY MANAGEMENT PERSONNEL'S REMUNERATION -           HTML    124K  
                Directors' remuneration (Details)                                
118: R94         KEY MANAGEMENT PERSONNEL'S REMUNERATION - Other     HTML     60K  
                key management personnel's (excluding Directors')                
                remuneration (Details)                                           
119: R95         FIVE HIGHEST PAID EMPLOYEES - Details of            HTML     59K  
                remuneration (Details)                                           
120: R96         FIVE HIGHEST PAID EMPLOYEES - Number of highest     HTML     64K  
                paid employees in each remuneration band (Details)               
121: R97         TAX - Income tax - Narrative (Details)              HTML     79K  
122: R98         TAX - Analysis of tax expense in the Group's        HTML     60K  
                consolidated statement of profit or loss and other               
                comprehensive income (Details)                                   
123: R99         TAX - Reconciliation of the PRC statutory           HTML     60K  
                corporate income tax rate to the effective income                
                tax rate (Details)                                               
124: R100        TAX - Movements of deferred tax liabilities net of  HTML     55K  
                deferred tax assets (Details)                                    
125: R101        TAX - Principal components of deferred tax          HTML     93K  
                balances (Details)                                               
126: R102        TAX - Other taxes (Details)                         HTML     62K  
127: R103        TAX - Special Oil Gain Levy (Details)               HTML     53K  
128: R104        Earnings Per Share (Details)                        HTML     63K  
129: R105        Dividends (Details)                                 HTML     62K  
130: R106        Property, Plant and Equipment (Details)             HTML     90K  
131: R107        Property, Plant and Equipment - Narrative           HTML     67K  
                (Details)                                                        
132: R108        Right-Of-Use Assets (Details)                       HTML    126K  
133: R109        Intangible Assets (Details)                         HTML    123K  
134: R110        INVESTMENTS IN ASSOCIATES - Particulars of          HTML     73K  
                principal associates (Details)                                   
135: R111        INVESTMENTS IN ASSOCIATES - The Group's             HTML     48K  
                investments in associates (Details)                              
136: R112        INVESTMENTS IN ASSOCIATES - The Groups share of     HTML     56K  
                the profits and other comprehensive income of its                
                associates in the consolidated financial                         
                statements (Details)                                             
137: R113        INVESTMENT IN A JOINT VENTURE - Particulars of the  HTML     59K  
                joint venture (Details)                                          
138: R114        INVESTMENT IN A JOINT VENTURE - Summarized          HTML     99K  
                financial information of the joint venture                       
                (Details)                                                        
139: R115        EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS -     HTML     64K  
                Equity investments (Details)                                     
140: R116        EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS -     HTML     51K  
                Other financial assets (Details)                                 
141: R117        EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS -     HTML     48K  
                Narrative (Details)                                              
142: R118        Other Non-Current Assets (Details)                  HTML     44K  
143: R119        Inventories and Supplies (Details)                  HTML     52K  
144: R120        Trade Receivables (Details)                         HTML     48K  
145: R121        Cash and Cash Equivalents and Time Deposits With    HTML     49K  
                Maturity Over Three Months (Details)                             
146: R122        Trade and Accrued Payables (Details)                HTML     46K  
147: R123        Contract Liabilities (Details)                      HTML     50K  
148: R124        Other Payables and Accrued Liabilities (Details)    HTML     61K  
149: R125        LOANS AND BORROWINGS - Current (Details)            HTML    112K  
150: R126        LOANS AND BORROWINGS - Non-current (Details)        HTML     96K  
151: R127        LOANS AND BORROWINGS - Details of notes (Details)   HTML    116K  
152: R128        LOANS AND BORROWINGS - Narrative (Details)          HTML     68K  
153: R129        LOANS AND BORROWINGS - Maturities of long term      HTML     61K  
                loans (Details)                                                  
154: R130        LOANS AND BORROWINGS - Supplemental information     HTML     53K  
                with respect to long term loans (Details)                        
155: R131        Lease Liabilities (Details)                         HTML     65K  
156: R132        Provision for Dismantlement (Details)               HTML     73K  
157: R133        SHARE CAPITAL - Issued share capital (Details)      HTML     49K  
158: R134        SHARE CAPITAL - Share option schemes - Narrative    HTML     63K  
                (Details)                                                        
159: R135        SHARE CAPITAL - Details of share option schemes     HTML     75K  
                (Details)                                                        
160: R136        Reserves (Details)                                  HTML     46K  
161: R137        RELATED PARTY TRANSACTIONS - Narrative (Details)    HTML     47K  
162: R138        RELATED PARTY TRANSACTIONS - A summary of           HTML    150K  
                significant related party transactions (Details)                 
163: R139        Retirement Benefits (Details)                       HTML     57K  
164: R140        Note to the Consolidated Statement of Cash Flows    HTML     81K  
                (Details)                                                        
165: R141        Note to the Consolidated Statement of Cash Flows -  HTML     72K  
                Reconciliation of liabilities arising from                       
                financing activities (Details)                                   
166: R142        COMMITMENTS AND CONTINGENCIES - Capital             HTML     53K  
                commitments (Details)                                            
167: R143        FINANCIAL INSTRUMENTS - Fair value of financial     HTML     44K  
                instruments - Narrative (Details)                                
168: R144        FINANCIAL INSTRUMENTS - Fair value hierarchy -      HTML     84K  
                Assets (Details)                                                 
169: R145        FINANCIAL INSTRUMENTS - Fair value hierarchy -      HTML     45K  
                Transfer between different levels of fair value                  
                hierarchy (Details)                                              
170: R146        Concentration of Customers (Details)                HTML     61K  
171: R147        FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES   HTML     55K  
                - Credit risk and management assessment (Details)                
172: R148        FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES   HTML     55K  
                - Currency risk (Details)                                        
173: R149        FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES   HTML     48K  
                - Interest rate risk (Details)                                   
174: R150        FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES   HTML     47K  
                - Liquidity risk (Details)                                       
175: R151        FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES   HTML     58K  
                - Capital management (Details)                                   
177: XML         IDEA XML File -- Filing Summary                      XML    319K  
176: EXCEL       IDEA Workbook of Financial Reports                  XLSX    235K  
19: EX-101.INS  XBRL Instance -- ceo-20201231                        XML   6.94M 
21: EX-101.CAL  XBRL Calculations -- ceo-20201231_cal                XML    391K 
22: EX-101.DEF  XBRL Definitions -- ceo-20201231_def                 XML   1.59M 
23: EX-101.LAB  XBRL Labels -- ceo-20201231_lab                      XML   3.97M 
24: EX-101.PRE  XBRL Presentations -- ceo-20201231_pre               XML   2.28M 
20: EX-101.SCH  XBRL Schema -- ceo-20201231                          XSD    492K 
178: ZIP         XBRL Zipped Folder -- 0000950103-21-005896-xbrl      Zip    485K  


‘EX-101.SCH’   —   XBRL Schema — ceo-20201231


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
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<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/PropertyPlantAndEquipment" id="PropertyPlantAndEquipment">
<link:definition> 11401 - Disclosure - PROPERTY, PLANT AND EQUIPMENT </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/IntangibleAssets" id="IntangibleAssets">
<link:definition> 11601 - Disclosure - INTANGIBLE ASSETS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InvestmentsInAssociates" id="InvestmentsInAssociates">
<link:definition> 11701 - Disclosure - INVESTMENTS IN ASSOCIATES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InvestmentInAJointVenture" id="InvestmentInAJointVenture">
<link:definition> 11801 - Disclosure - INVESTMENT IN A JOINT VENTURE </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/EquityInvestmentsAndOtherFinancialAssets" id="EquityInvestmentsAndOtherFinancialAssets">
<link:definition> 11901 - Disclosure - EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/OtherNoncurrentAssets" id="OtherNoncurrentAssets">
<link:definition> 12001 - Disclosure - OTHER NON-CURRENT ASSETS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InventoriesAndSupplies" id="InventoriesAndSupplies">
<link:definition> 12101 - Disclosure - INVENTORIES AND SUPPLIES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/TradeReceivables" id="TradeReceivables">
<link:definition> 12201 - Disclosure - TRADE RECEIVABLES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/CashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonths" id="CashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonths">
<link:definition> 12301 - Disclosure - CASH AND CASH EQUIVALENTS AND TIME DEPOSITS WITH MATURITY OVER THREE MONTHS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/TradeAndAccruedPayables" id="TradeAndAccruedPayables">
<link:definition> 12401 - Disclosure - TRADE AND ACCRUED PAYABLES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/OtherPayablesAndAccruedLiabilities" id="OtherPayablesAndAccruedLiabilities">
<link:definition> 12601 - Disclosure - OTHER PAYABLES AND ACCRUED LIABILITIES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/LoansAndBorrowings" id="LoansAndBorrowings">
<link:definition> 12701 - Disclosure - LOANS AND BORROWINGS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ProvisionForDismantlement" id="ProvisionForDismantlement">
<link:definition> 12901 - Disclosure - PROVISION FOR DISMANTLEMENT </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ShareCapital" id="ShareCapital">
<link:definition> 13001 - Disclosure - SHARE CAPITAL </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/Reserves" id="Reserves">
<link:definition> 13101 - Disclosure - RESERVES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/RelatedPartyTransactions" id="RelatedPartyTransactions">
<link:definition> 13201 - Disclosure - RELATED PARTY TRANSACTIONS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/RetirementBenefits" id="RetirementBenefits">
<link:definition> 13301 - Disclosure - RETIREMENT BENEFITS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/NoteToTheConsolidatedStatementOfCashFlows" id="NoteToTheConsolidatedStatementOfCashFlows">
<link:definition> 13401 - Disclosure - NOTE TO THE CONSOLIDATED STATEMENT OF CASH FLOWS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/CommitmentsAndContingencies" id="CommitmentsAndContingencies">
<link:definition> 13501 - Disclosure - COMMITMENTS AND CONTINGENCIES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinancialInstruments" id="FinancialInstruments">
<link:definition> 13601 - Disclosure - FINANCIAL INSTRUMENTS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ConcentrationOfCustomers" id="ConcentrationOfCustomers">
<link:definition> 13701 - Disclosure - CONCENTRATION OF CUSTOMERS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinancialRiskManagementObjectivesAndPolicies" id="FinancialRiskManagementObjectivesAndPolicies">
<link:definition> 13801 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ChargesOnAssets" id="ChargesOnAssets">
<link:definition> 13901 - Disclosure - CHARGES ON ASSETS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SubsequentEvents" id="SubsequentEvents">
<link:definition> 14001 - Disclosure - SUBSEQUENT EVENTS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ApprovalOfTheFinancialStatements" id="ApprovalOfTheFinancialStatements">
<link:definition> 14101 - Disclosure - APPROVAL OF THE FINANCIAL STATEMENTS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SummaryOfSignificantAccountingPoliciesPolicies" id="SummaryOfSignificantAccountingPoliciesPolicies">
<link:definition> 20302 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/OilAndGasSalesAndMarketingRevenuesTables" id="OilAndGasSalesAndMarketingRevenuesTables">
<link:definition> 30503 - Disclosure - OIL AND GAS SALES AND MARKETING REVENUES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ProfitBeforeTaxTables" id="ProfitBeforeTaxTables">
<link:definition> 30703 - Disclosure - PROFIT BEFORE TAX (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinanceCostsTables" id="FinanceCostsTables">
<link:definition> 30803 - Disclosure - FINANCE COSTS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/KeyManagementPersonnelsRemunerationTables" id="KeyManagementPersonnelsRemunerationTables">
<link:definition> 30903 - Disclosure - KEY MANAGEMENT PERSONNEL'S REMUNERATION (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FiveHighestPaidEmployeesTables" id="FiveHighestPaidEmployeesTables">
<link:definition> 31003 - Disclosure - FIVE HIGHEST PAID EMPLOYEES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/TaxTables" id="TaxTables">
<link:definition> 31103 - Disclosure - TAX (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/DividendsTables" id="DividendsTables">
<link:definition> 31303 - Disclosure - DIVIDENDS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
<link:definition> 31203 - Disclosure - EARNINGS PER SHARE (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/PropertyPlantAndEquipmentTables" id="PropertyPlantAndEquipmentTables">
<link:definition> 31403 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/IntangibleAssetsTables" id="IntangibleAssetsTables">
<link:definition> 31603 - Disclosure - INTANGIBLE ASSETS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InvestmentsInAssociatesTables" id="InvestmentsInAssociatesTables">
<link:definition> 31703 - Disclosure - INVESTMENTS IN ASSOCIATES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InvestmentInAJointVentureTables" id="InvestmentInAJointVentureTables">
<link:definition> 31803 - Disclosure - INVESTMENT IN A JOINT VENTURE (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/EquityInvestmentsAndOtherFinancialAssetsTables" id="EquityInvestmentsAndOtherFinancialAssetsTables">
<link:definition> 31903 - Disclosure - EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/InventoriesAndSuppliesTables" id="InventoriesAndSuppliesTables">
<link:definition> 32103 - Disclosure - INVENTORIES AND SUPPLIES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/OtherPayablesAndAccruedLiabilitiesTables" id="OtherPayablesAndAccruedLiabilitiesTables">
<link:definition> 32603 - Disclosure - OTHER PAYABLES AND ACCRUED LIABILITIES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/LoansAndBorrowingsTables" id="LoansAndBorrowingsTables">
<link:definition> 32703 - Disclosure - LOANS AND BORROWINGS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ProvisionForDismantlementTables" id="ProvisionForDismantlementTables">
<link:definition> 32903 - Disclosure - PROVISION FOR DISMANTLEMENT (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ShareCapitalTables" id="ShareCapitalTables">
<link:definition> 33003 - Disclosure - SHARE CAPITAL (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/RelatedPartyTransactionsTables" id="RelatedPartyTransactionsTables">
<link:definition> 33203 - Disclosure - RELATED PARTY TRANSACTIONS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/NoteToTheConsolidatedStatementOfCashFlowsTables" id="NoteToTheConsolidatedStatementOfCashFlowsTables">
<link:definition> 33403 - Disclosure - NOTE TO THE CONSOLIDATED STATEMENT OF CASH FLOWS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/CommitmentsAndContingenciesTables" id="CommitmentsAndContingenciesTables">
<link:definition> 33503 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinancialInstrumentsTables" id="FinancialInstrumentsTables">
<link:definition> 33603 - Disclosure - FINANCIAL INSTRUMENTS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ConcentrationOfCustomersTables" id="ConcentrationOfCustomersTables">
<link:definition> 33703 - Disclosure - CONCENTRATION OF CUSTOMERS (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinancialRiskManagementObjectivesAndPoliciesTables" id="FinancialRiskManagementObjectivesAndPoliciesTables">
<link:definition> 33803 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/CorporateInformationDetails" id="CorporateInformationDetails">
<link:definition> 40101 - Disclosure - CORPORATE INFORMATION (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails" id="SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails">
<link:definition> 40302 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and cash equivalents (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SegmentInformationSegmentResultsDetails" id="SegmentInformationSegmentResultsDetails">
<link:definition> 40601 - Disclosure - SEGMENT INFORMATION - Segment results (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SegmentInformationGeographicalInformationDetails" id="SegmentInformationGeographicalInformationDetails">
<link:definition> 40602 - Disclosure - SEGMENT INFORMATION - Geographical information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/SegmentInformationInformationAboutMajorCustomersDetails" id="SegmentInformationInformationAboutMajorCustomersDetails">
<link:definition> 40603 - Disclosure - SEGMENT INFORMATION - Information about major customers (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/OilAndGasSalesAndMarketingRevenuesDetails" id="OilAndGasSalesAndMarketingRevenuesDetails">
<link:definition> 40501 - Disclosure - OIL AND GAS SALES AND MARKETING REVENUES (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/ProfitBeforeTaxDetails" id="ProfitBeforeTaxDetails">
<link:definition> 40701 - Disclosure - PROFIT BEFORE TAX (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinanceCostsDetails" id="FinanceCostsDetails">
<link:definition> 40801 - Disclosure - FINANCE COSTS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/FinanceCostsNarrativeDetails" id="FinanceCostsNarrativeDetails">
<link:definition> 40802 - Disclosure - FINANCE COSTS - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/KeyManagementPersonnelsRemunerationDirectorsRemunerationDetails" id="KeyManagementPersonnelsRemunerationDirectorsRemunerationDetails">
<link:definition> 40901 - Disclosure - KEY MANAGEMENT PERSONNEL'S REMUNERATION - Directors' remuneration (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://www.cnoocltd.com/role/KeyManagementPersonnelsRemunerationOtherKeyManagementPersonnelsExcludingDirectorsRemunerationDetails" id="KeyManagementPersonnelsRemunerationOtherKeyManagementPersonnelsExcludingDirectorsRemunerationDetails">
<link:definition> 40902 - Disclosure - KEY MANAGEMENT PERSONNEL'S REMUNERATION - Other key management personnel's (excluding Directors') remuneration (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41001 - Disclosure - FIVE HIGHEST PAID EMPLOYEES - Details of remuneration (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41002 - Disclosure - FIVE HIGHEST PAID EMPLOYEES - Number of highest paid employees in each remuneration band (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41101 - Disclosure - TAX - Income tax - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41102 - Disclosure - TAX - Analysis of tax expense in the Group's consolidated statement of profit or loss and other comprehensive income (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41103 - Disclosure - TAX - Reconciliation of the PRC statutory corporate income tax rate to the effective income tax rate (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41104 - Disclosure - TAX - Movements of deferred tax liabilities net of deferred tax assets (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41105 - Disclosure - TAX - Principal components of deferred tax balances (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41105 - Disclosure - TAX - Principal components of deferred tax balances (Details) (Calc2) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType roleURI="http://www.cnoocltd.com/role/TaxOtherTaxesDetails" id="TaxOtherTaxesDetails">
<link:definition> 41106 - Disclosure - TAX - Other taxes (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41301 - Disclosure - DIVIDENDS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41201 - Disclosure - EARNINGS PER SHARE (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41401 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41402 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41601 - Disclosure - INTANGIBLE ASSETS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41701 - Disclosure - INVESTMENTS IN ASSOCIATES - Particulars of principal associates (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41702 - Disclosure - INVESTMENTS IN ASSOCIATES - The Group's investments in associates (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41703 - Disclosure - INVESTMENTS IN ASSOCIATES - The Groups share of the profits and other comprehensive income of its associates in the consolidated financial statements (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType roleURI="http://www.cnoocltd.com/role/InvestmentInAJointVentureParticularsOfTheJointVentureDetails" id="InvestmentInAJointVentureParticularsOfTheJointVentureDetails">
<link:definition> 41801 - Disclosure - INVESTMENT IN A JOINT VENTURE - Particulars of the joint venture (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41802 - Disclosure - INVESTMENT IN A JOINT VENTURE - Summarized financial information of the joint venture (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 41901 - Disclosure - EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS - Equity investments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41902 - Disclosure - EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS - Other financial assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41903 - Disclosure - EQUITY INVESTMENTS AND OTHER FINANCIAL ASSETS - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42001 - Disclosure - OTHER NON-CURRENT ASSETS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType roleURI="http://www.cnoocltd.com/role/InventoriesAndSuppliesDetails" id="InventoriesAndSuppliesDetails">
<link:definition> 42101 - Disclosure - INVENTORIES AND SUPPLIES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42201 - Disclosure - TRADE RECEIVABLES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42301 - Disclosure - CASH AND CASH EQUIVALENTS AND TIME DEPOSITS WITH MATURITY OVER THREE MONTHS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42401 - Disclosure - TRADE AND ACCRUED PAYABLES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42601 - Disclosure - OTHER PAYABLES AND ACCRUED LIABILITIES (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42701 - Disclosure - LOANS AND BORROWINGS - Current (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42702 - Disclosure - LOANS AND BORROWINGS - Non-current (Details) </link:definition>
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<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42703 - Disclosure - LOANS AND BORROWINGS - Details of notes (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42704 - Disclosure - LOANS AND BORROWINGS - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42705 - Disclosure - LOANS AND BORROWINGS - Maturities of long term loans (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42706 - Disclosure - LOANS AND BORROWINGS - Supplemental information with respect to long term loans (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 42901 - Disclosure - PROVISION FOR DISMANTLEMENT (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 43001 - Disclosure - SHARE CAPITAL - Issued share capital (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 43002 - Disclosure - SHARE CAPITAL - Share option schemes - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43003 - Disclosure - SHARE CAPITAL - Details of share option schemes (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43101 - Disclosure - RESERVES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43201 - Disclosure - RELATED PARTY TRANSACTIONS - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43202 - Disclosure - RELATED PARTY TRANSACTIONS - A summary of significant related party transactions (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43301 - Disclosure - RETIREMENT BENEFITS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 43401 - Disclosure - NOTE TO THE CONSOLIDATED STATEMENT OF CASH FLOWS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 43501 - Disclosure - COMMITMENTS AND CONTINGENCIES - Capital commitments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43601 - Disclosure - FINANCIAL INSTRUMENTS - Fair value of financial instruments - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43602 - Disclosure - FINANCIAL INSTRUMENTS - Fair value hierarchy - Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43701 - Disclosure - CONCENTRATION OF CUSTOMERS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43801 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES - Credit risk and management assessment (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43802 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES - Currency risk (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43803 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES - Interest rate risk (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43804 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES - Liquidity risk (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 43805 - Disclosure - FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES - Capital management (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 30603 - Disclosure - SEGMENT INFORMATION (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 41107 - Disclosure - TAX - Special Oil Gain Levy (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 42501 - Disclosure - CONTRACT LIABILITIES (Details) </link:definition>
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<xsd:element name="InventoriesAndSuppliesTableExplanatory" id="ceo_InventoriesAndSuppliesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfOtherPayablesAndAccruedLiabilitiesTableExplanatory" id="ceo_DisclosureOfOtherPayablesAndAccruedLiabilitiesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCurrentLoansAndBorrowingsTableExplanatory" id="ceo_DisclosureOfCurrentLoansAndBorrowingsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfNoncurrentLoansAndBorrowingsTableExplanatory" id="ceo_DisclosureOfNoncurrentLoansAndBorrowingsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutNotesTableExplanatory" id="ceo_DisclosureOfDetailedInformationAboutNotesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfMaturitiesOfLongtermLoansTebleExplanatory" id="ceo_DisclosureOfMaturitiesOfLongtermLoansTebleExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfSupplementalInformationWithRespectToLongtermLoansTableExplanatory" id="ceo_DisclosureOfSupplementalInformationWithRespectToLongtermLoansTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfProvisionForDismantlementTableExplanatory" id="ceo_DisclosureOfProvisionForDismantlementTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfShareCapitalTableExplanatory" id="ceo_DisclosureOfShareCapitalTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfSummaryOfSignificantRelatedPartyTransactionsTableExplanatory" id="ceo_DisclosureOfSummaryOfSignificantRelatedPartyTransactionsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfReconciliationOfProfitLossBeforeTaxToCashGeneratedFromOperationsTableExplanatory" id="ceo_DisclosureOfReconciliationOfProfitLossBeforeTaxToCashGeneratedFromOperationsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCapitalCommitmentsTableExplanatory" id="ceo_DisclosureOfCapitalCommitmentsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCapitalCommitmentsOfJointVenturesTableExplanatory" id="ceo_DisclosureOfCapitalCommitmentsOfJointVenturesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCapitalManagementOnBasisOfDebtToCapitalRatioTableExplanatory" id="ceo_DisclosureOfCapitalManagementOnBasisOfDebtToCapitalRatioTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DirectlyHeldSubsidiariesMember" id="ceo_DirectlyHeldSubsidiariesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocChinaLimitedMember" id="ceo_CnoocChinaLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ChinaOffshoreOilSingaporeInternationalPteLtdMember" id="ceo_ChinaOffshoreOilSingaporeInternationalPteLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocInternationalLimitedMember" id="ceo_CnoocInternationalLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2003LimitedMember" id="ceo_CnoocFinance2003LimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2003LimitedNoteOneMember" id="ceo_CnoocFinance2003LimitedNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2011LimitedMember" id="ceo_CnoocFinance2011LimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CeprLimitedMember" id="ceo_CeprLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeasesTable" id="ceo_DisclosureOfLeasesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeasesLineItems" id="ceo_DisclosureOfLeasesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LeaseTermFromCommencementDateOfShorttermLeaseRecognitionExemptionUsed" id="ceo_LeaseTermFromCommencementDateOfShorttermLeaseRecognitionExemptionUsed" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AcquisitionAndOtherVentureAbstract" id="ceo_AcquisitionAndOtherVentureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfAcquisitionAndOtherVentureExplanatory" id="ceo_DisclosureOfAcquisitionAndOtherVentureExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2011LimitedNoteOneMember" id="ceo_CnoocFinance2011LimitedNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2012LimitedMember" id="ceo_CnoocFinance2012LimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2013LimitedMember" id="ceo_CnoocFinance2013LimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2013LimitedNoteOneMember" id="ceo_CnoocFinance2013LimitedNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2012LimitedNoteOneMember" id="ceo_CnoocFinance2012LimitedNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IndirectlyHeldSubsidiariesMember" id="ceo_IndirectlyHeldSubsidiariesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocDeepwaterDevelopmentLimitedMember" id="ceo_CnoocDeepwaterDevelopmentLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocSoutheastAsiaLimitedMember" id="ceo_CnoocSoutheastAsiaLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocMuturiLimitedMember" id="ceo_CnoocMuturiLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocNwsPrivateLimitedMember" id="ceo_CnoocNwsPrivateLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocExplorationAndProductionNigeriaLimitedMember" id="ceo_CnoocExplorationAndProductionNigeriaLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocIraqLimitedMember" id="ceo_CnoocIraqLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocCanadaEnergyLtdMember" id="ceo_CnoocCanadaEnergyLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocUgandaLtdMember" id="ceo_CnoocUgandaLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcMember" id="ceo_CnoocPetroleumNorthAmericaUlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumEuropeLimitedMember" id="ceo_CnoocPetroleumEuropeLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NexenPetroleumNigeriaLimitedMember" id="ceo_NexenPetroleumNigeriaLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocEnergyUSALlcMember" id="ceo_CnoocEnergyUSALlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumOffshoreUSAIncMember" id="ceo_CnoocPetroleumOffshoreUSAIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocOilSandsCanadaMember" id="ceo_CnoocOilSandsCanadaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumBrasilLtdaMember" id="ceo_CnoocPetroleumBrasilLtdaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2014UlcMember" id="ceo_CnoocFinance2014UlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2014UlcNoteOneMember" id="ceo_CnoocFinance2014UlcNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015USALlcMember" id="ceo_CnoocFinance2015USALlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015AustraliaPtyLtdMember" id="ceo_CnoocFinance2015AustraliaPtyLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumGuyanaLimitedMember" id="ceo_CnoocPetroleumGuyanaLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015AustraliaPtyLtdNoteOneMember" id="ceo_CnoocFinance2015AustraliaPtyLtdNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCashAndCashEquivalentsTable" id="ceo_DisclosureOfCashAndCashEquivalentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfImpairmentOfFinancialAssetsTable" id="ceo_DisclosureOfImpairmentOfFinancialAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCashAndCashEquivalentsLineItems" id="ceo_DisclosureOfCashAndCashEquivalentsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OriginalMaturityOfShortTermDepositsClassifiedAsCashAndCashEquivalents" id="ceo_OriginalMaturityOfShortTermDepositsClassifiedAsCashAndCashEquivalents" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExplorationAndProductionSegmentMember" id="ceo_ExplorationAndProductionSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TradingBusinessSegmentMember" id="ceo_TradingBusinessSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CorporateSegmentMember" id="ceo_CorporateSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExternalRevenue" id="ceo_ExternalRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="IntersegmentRevenue" id="ceo_IntersegmentRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="AmountsIncludedInMeasureOfSegmentProfitOrLossAbstract" id="ceo_AmountsIncludedInMeasureOfSegmentProfitOrLossAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OtherSegmentInformationAbstract" id="ceo_OtherSegmentInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OtherForeignCountriesMember" id="ceo_OtherForeignCountriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RatioOfRevenueFromCustomersInDifferentLocationsToGroupsRevenues" id="ceo_RatioOfRevenueFromCustomersInDifferentLocationsToGroupsRevenues" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ChinaPetroleumAndChemicalCorporationMember" id="ceo_ChinaPetroleumAndChemicalCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExplorationAndProductionSegmentAndTradingBusinessSegmentMember" id="ceo_ExplorationAndProductionSegmentAndTradingBusinessSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="GrossRevenueFromSaleOfOilAndGasProducts" id="ceo_GrossRevenueFromSaleOfOilAndGasProducts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="GovernmentsShareOfOilArisingFromOilAndGasSales" id="ceo_GovernmentsShareOfOilArisingFromOilAndGasSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="CreditingAdjustmentForCalculatingProfitLossBeforeTaxAbstract" id="ceo_CreditingAdjustmentForCalculatingProfitLossBeforeTaxAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="InvestmentIncomeAbstract" id="ceo_InvestmentIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="InsuranceCompensationOnDisposalOfPropertyPlantAndEquipment" id="ceo_InsuranceCompensationOnDisposalOfPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="ChargingAdjustmentForCalculatingProfitLossBeforeTaxAbstract" id="ceo_ChargingAdjustmentForCalculatingProfitLossBeforeTaxAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ImpairmentLossRecognisedInProfitOrLossOthers" id="ceo_ImpairmentLossRecognisedInProfitOrLossOthers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DepreciationDepletionAndAmortizationExpensesCapitalized" id="ceo_DepreciationDepletionAndAmortizationExpensesCapitalized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="RentalExpensesOfOfficeProperties" id="ceo_RentalExpensesOfOfficeProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="RentalExpensesOfPlantAndEquipment" id="ceo_RentalExpensesOfPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="OtherFinanceCostsAbstract" id="ceo_OtherFinanceCostsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="XuKeqiangMember" id="ceo_XuKeqiangMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExecutiveDirectorsMember" id="ceo_ExecutiveDirectorsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="WuGuangqiMember" id="ceo_WuGuangqiMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="YuanGuangyuMember" id="ceo_YuanGuangyuMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="QiuZhiZhongMember" id="ceo_QiuZhiZhongMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HuGuangjieMember" id="ceo_HuGuangjieMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LiYongMember" id="ceo_LiYongMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="WenDongFenMember" id="ceo_WenDongFenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NonexecutiveDirectorsMember" id="ceo_NonexecutiveDirectorsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="YangHuaMember" id="ceo_YangHuaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="WangDongjinMember" id="ceo_WangDongjinMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LiuJianMember" id="ceo_LiuJianMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IndependentNonexecutiveDirectorsMember" id="ceo_IndependentNonexecutiveDirectorsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ChiuSungHongMember" id="ceo_ChiuSungHongMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LawrenceJLauMember" id="ceo_LawrenceJLauMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TseHauYinAloysiusMember" id="ceo_TseHauYinAloysiusMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="KevinGLynchMember" id="ceo_KevinGLynchMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="FeesPaidOrPayableToEmployees" id="ceo_FeesPaidOrPayableToEmployees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="PerformanceRelatedBonuses" id="ceo_PerformanceRelatedBonuses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="OtherKeyManagementPersonnelExcludingDirectorsMember" id="ceo_OtherKeyManagementPersonnelExcludingDirectorsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RemunerationRangeOneMember" id="ceo_RemunerationRangeOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RemunerationRangeTwoMember" id="ceo_RemunerationRangeTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfHighestPaidEmployeesTable" id="ceo_DisclosureOfHighestPaidEmployeesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesMember" id="ceo_HighestPaidEmployeesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfHighestPaidEmployeesLineItems" id="ceo_DisclosureOfHighestPaidEmployeesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NumberOfDirectorsWhoseRemunerationFallingWithinCategoryOfFiveHighestPaidEmployees" id="ceo_NumberOfDirectorsWhoseRemunerationFallingWithinCategoryOfFiveHighestPaidEmployees" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="HighestPaidEmployeesRangeThreeMember" id="ceo_HighestPaidEmployeesRangeThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeTwoMember" id="ceo_HighestPaidEmployeesRangeTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeFourMember" id="ceo_HighestPaidEmployeesRangeFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeFiveMember" id="ceo_HighestPaidEmployeesRangeFiveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeSixMember" id="ceo_HighestPaidEmployeesRangeSixMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeEightMember" id="ceo_HighestPaidEmployeesRangeEightMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeNineMember" id="ceo_HighestPaidEmployeesRangeNineMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighestPaidEmployeesRangeTenMember" id="ceo_HighestPaidEmployeesRangeTenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutIncomeTaxRateTable" id="ceo_DisclosureOfDetailedInformationAboutIncomeTaxRateTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AllCountriesAxis" id="ceo_AllCountriesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutIncomeTaxRateLineItems" id="ceo_DisclosureOfDetailedInformationAboutIncomeTaxRateLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutAnalysisOfTaxExpenseCreditInConsolidatedStatementOfProfitOrLossAndOtherComprehensiveIncomeTable" id="ceo_DisclosureOfDetailedInformationAboutAnalysisOfTaxExpenseCreditInConsolidatedStatementOfProfitOrLossAndOtherComprehensiveIncomeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutAnalysisOfTaxExpenseCreditInConsolidatedStatementOfProfitOrLossAndOtherComprehensiveIncomeLineItems" id="ceo_DisclosureOfDetailedInformationAboutAnalysisOfTaxExpenseCreditInConsolidatedStatementOfProfitOrLossAndOtherComprehensiveIncomeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TaxRateEffectOfTaxCreditFromGovernment" id="ceo_TaxRateEffectOfTaxCreditFromGovernment" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TaxRateEffectOfTaxReportedInEquityaccountedEntities" id="ceo_TaxRateEffectOfTaxReportedInEquityaccountedEntities" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="FairValueOfLongTermBorrowingsMember" id="ceo_FairValueOfLongTermBorrowingsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CarryforwardTaxLossesAvailableToOffsetAgainstFutureTaxableProfits" id="ceo_CarryforwardTaxLossesAvailableToOffsetAgainstFutureTaxableProfits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="TaxLossesToRecognizeDeferredTaxAssets" id="ceo_TaxLossesToRecognizeDeferredTaxAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTaxesOtherThanIncomeTaxTable" id="ceo_DisclosureOfDetailedInformationAboutTaxesOtherThanIncomeTaxTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTaxesOtherThanIncomeTaxLineItems" id="ceo_DisclosureOfDetailedInformationAboutTaxesOtherThanIncomeTaxLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProductionTaxRate" id="ceo_ProductionTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ValueAddedTaxRate" id="ceo_ValueAddedTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ResourceTaxRate" id="ceo_ResourceTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CityConstructionTaxRateHigher" id="ceo_CityConstructionTaxRateHigher" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CityConstructionTaxRateLower" id="ceo_CityConstructionTaxRateLower" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="EducationalSurchargeRate" id="ceo_EducationalSurchargeRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LocalEducationalSurchargeRate" id="ceo_LocalEducationalSurchargeRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DividendPerOrdinaryShareAbstract" id="ceo_DividendPerOrdinaryShareAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="InterimDividendsClassifiedAsFinancingActivities" id="ceo_InterimDividendsClassifiedAsFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="FinalDividendsClassifiedAsFinancingActivities" id="ceo_FinalDividendsClassifiedAsFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYearsPerOrdinaryShare" id="ceo_DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYearsPerOrdinaryShare" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CorporateIncomeTaxRateResultingFromDistributionOfDividendsToNonresidentEnterpriseShareholders" id="ceo_CorporateIncomeTaxRateResultingFromDistributionOfDividendsToNonresidentEnterpriseShareholders" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="VehiclesAndOfficeEquipmentAndOtherPropertyPlantAndEquipmentMember" id="ceo_VehiclesAndOfficeEquipmentAndOtherPropertyPlantAndEquipmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TypesOfProjectsAxis" id="ceo_TypesOfProjectsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TypesOfProjectsMember" id="ceo_TypesOfProjectsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DepreciationChargeOnDismantlementCostCapitalised" id="ceo_DepreciationChargeOnDismantlementCostCapitalised" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DerivedPretaxDiscountRate" id="ceo_DerivedPretaxDiscountRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="GasProcessingRightsUnderNwsProjectMember" id="ceo_GasProcessingRightsUnderNwsProjectMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExplorationRightsMember" id="ceo_ExplorationRightsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="MarketingTransportationAndStorageContractsMember" id="ceo_MarketingTransportationAndStorageContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SoftwareAndOtherIntangibleAssetsMember" id="ceo_SoftwareAndOtherIntangibleAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ShanghaiPetroleumCorporationLimitedMember" id="ceo_ShanghaiPetroleumCorporationLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinanceCorporationLimitedMember" id="ceo_CnoocFinanceCorporationLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="BcEnergyInvestmentsCorporationMember" id="ceo_BcEnergyInvestmentsCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NoncurrentPubliclyTradedInvestmentsMember" id="ceo_NoncurrentPubliclyTradedInvestmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NoncurrentNonpubliclyTradedInvestmentsPrivateEquityFundMember" id="ceo_NoncurrentNonpubliclyTradedInvestmentsPrivateEquityFundMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NoncurrentNonpubliclyTradedInvestmentsMember" id="ceo_NoncurrentNonpubliclyTradedInvestmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="MegEnergyCorporationMember" id="ceo_MegEnergyCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="KerogenEnergyFundMember" id="ceo_KerogenEnergyFundMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutEquityInvestmentsAbstract" id="ceo_DisclosureOfDetailedInformationAboutEquityInvestmentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CorporateWealthManagementProductsClassifiedAsOtherCurrentFinancialAssetsMember" id="ceo_CorporateWealthManagementProductsClassifiedAsOtherCurrentFinancialAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="MoneyMarketFundsMember" id="ceo_MoneyMarketFundsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SpecifiedDismantlementFund" id="ceo_SpecifiedDismantlementFund" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTradeReceivablesTable" id="ceo_DisclosureOfDetailedInformationAboutTradeReceivablesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTradeReceivablesLineItems" id="ceo_DisclosureOfDetailedInformationAboutTradeReceivablesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CreditTermsOfTradeReceivablesAfterDeliveryOfOilAndGas" id="ceo_CreditTermsOfTradeReceivablesAfterDeliveryOfOilAndGas" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PeriodOfContractBetweenPaymentAndTransferOfAssociatedGoodsForContractApplyingPracticalExpedientOfNotAdjustingTransactionPriceForAnySignificantFinancingComponent" id="ceo_PeriodOfContractBetweenPaymentAndTransferOfAssociatedGoodsForContractApplyingPracticalExpedientOfNotAdjustingTransactionPriceForAnySignificantFinancingComponent" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AgeOfTradeReceivables" id="ceo_AgeOfTradeReceivables" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsTable" id="ceo_DisclosureOfDetailedInformationAboutCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsLineItems" id="ceo_DisclosureOfDetailedInformationAboutCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="MaturityOfCurrentDepositsAndTimeDeposits" id="ceo_MaturityOfCurrentDepositsAndTimeDeposits" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="WeightedAverageEffectiveInterestRatesOfBankDeposits" id="ceo_WeightedAverageEffectiveInterestRatesOfBankDeposits" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTradeAndAccruedPayablesTable" id="ceo_DisclosureOfDetailedInformationAboutTradeAndAccruedPayablesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutTradeAndAccruedPayablesLineItems" id="ceo_DisclosureOfDetailedInformationAboutTradeAndAccruedPayablesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AgeOfTradeAndAccruedPayables" id="ceo_AgeOfTradeAndAccruedPayables" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AccruedPayrollAndWelfarePayable" id="ceo_AccruedPayrollAndWelfarePayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="RoyaltiesPayable" id="ceo_RoyaltiesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="SpecialOilGainLevyPayable" id="ceo_SpecialOilGainLevyPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="DisclosureOfCurrentLoansAndBorrowingsTable" id="ceo_DisclosureOfCurrentLoansAndBorrowingsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LoansAndBorrowingsDueWithinOneYearMember" id="ceo_LoansAndBorrowingsDueWithinOneYearMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="GeneralLoansMember" id="ceo_GeneralLoansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NumberOfGuaranteeDelivered" id="ceo_NumberOfGuaranteeDelivered" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="TangguhLngProjectMember" id="ceo_TangguhLngProjectMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ArcticLng2ProjectMember" id="ceo_ArcticLng2ProjectMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NotesFullyAndUnconditionallyGuaranteedByCompanyMember" id="ceo_NotesFullyAndUnconditionallyGuaranteedByCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCurrentLoansAndBorrowingsLineItems" id="ceo_DisclosureOfCurrentLoansAndBorrowingsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfNoncurrentLoansAndBorrowingsTable" id="ceo_DisclosureOfNoncurrentLoansAndBorrowingsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ThirdLngProcessTrainOfTangguhLngProjectMember" id="ceo_ThirdLngProcessTrainOfTangguhLngProjectMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfNoncurrentLoansAndBorrowingsLineItems" id="ceo_DisclosureOfNoncurrentLoansAndBorrowingsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutLongTermLoansTable" id="ceo_DisclosureOfDetailedInformationAboutLongTermLoansTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="MizuhoCorporateBankLtdMember" id="ceo_MizuhoCorporateBankLtdMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AggregateLoanAmountUnderCommercialLoanAgreements" id="ceo_AggregateLoanAmountUnderCommercialLoanAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="NumberOfCommercialLoanAgreements" id="ceo_NumberOfCommercialLoanAgreements" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="PaymentObligationsGuaranteedByEntityOfTrusteeBorrowerUnderCommercialLoanAgreements" id="ceo_PaymentObligationsGuaranteedByEntityOfTrusteeBorrowerUnderCommercialLoanAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="ShareholderLoansReceived" id="ceo_ShareholderLoansReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="DisclosureOfDetailedInformationAboutLongTermLoansLineItems" id="ceo_DisclosureOfDetailedInformationAboutLongTermLoansLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RepayableMaturitiesOfLongTermBankLoansAbstract" id="ceo_RepayableMaturitiesOfLongTermBankLoansAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProvisionsRevisedOtherProvisions" id="ceo_ProvisionsRevisedOtherProvisions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DiscountRateUsedForCalculatingProvisionForDismantlement" id="ceo_DiscountRateUsedForCalculatingProvisionForDismantlement" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="ShareOptionScheme2005Member" id="ceo_ShareOptionScheme2005Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RatioOfNumberOfSharesIssuedUponExerciseOfOptionsGrantedToTotalIssuedCapital" id="ceo_RatioOfNumberOfSharesIssuedUponExerciseOfOptionsGrantedToTotalIssuedCapital" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="ConsiderationPayableByGranteesForGrantOfOptions" id="ceo_ConsiderationPayableByGranteesForGrantOfOptions" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="NumberOfTradingDaysPrecedingDateOfGrantToDetermineAverageClosingPriceOfShares" id="ceo_NumberOfTradingDaysPrecedingDateOfGrantToDetermineAverageClosingPriceOfShares" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ChinaNationalOffshoreOilCorporationGroupMember" id="ceo_ChinaNationalOffshoreOilCorporationGroupMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TypesOfAgreementsInRespectOfRelatedPartyTransactionsAxis" id="ceo_TypesOfAgreementsInRespectOfRelatedPartyTransactionsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ComprehensiveFrameworkAgreementMember" id="ceo_ComprehensiveFrameworkAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TermOfAgreements" id="ceo_TermOfAgreements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="StateownedEnterprisesMember" id="ceo_StateownedEnterprisesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ChinaUnitedCoalbedMethaneCorporationLimitedMember" id="ceo_ChinaUnitedCoalbedMethaneCorporationLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProvisionOfExplorationOilAndGasDevelopmentOilAndGasProductionAsWellAsMarketingManagementAndAncillaryServicesByRelatedPartyAbstract" id="ceo_ProvisionOfExplorationOilAndGasDevelopmentOilAndGasProductionAsWellAsMarketingManagementAndAncillaryServicesByRelatedPartyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExpenseArisingFromExplorationForAndEvaluationOfMineralResourcesCapitalizedUnderPropertyPlantAndEquipment" id="ceo_ExpenseArisingFromExplorationForAndEvaluationOfMineralResourcesCapitalizedUnderPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ExpenseArisingFromOilAndGasDevelopmentAndSupportServices" id="ceo_ExpenseArisingFromOilAndGasDevelopmentAndSupportServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ExpenseArisingFromOilAndGasProductionAndSupportServices" id="ceo_ExpenseArisingFromOilAndGasProductionAndSupportServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="SalesOfPetroleumAndNaturalGasProductsByRelatedPartyAbstract" id="ceo_SalesOfPetroleumAndNaturalGasProductsByRelatedPartyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RevenueFromSalesOfPetroleumAndNaturalGasProductsOtherThanLongTermSalesOfNaturalGasAndLiquefiedNaturalGas" id="ceo_RevenueFromSalesOfPetroleumAndNaturalGasProductsOtherThanLongTermSalesOfNaturalGasAndLiquefiedNaturalGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="RevenueFromLongTermSalesOfNaturalGasAndLiquefiedNaturalGas" id="ceo_RevenueFromLongTermSalesOfNaturalGasAndLiquefiedNaturalGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="TransactionsAndBalancesWithRelatedPartyAbstract" id="ceo_TransactionsAndBalancesWithRelatedPartyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="InterestIncomeReceivedFromRelatedPartyAbstract" id="ceo_InterestIncomeReceivedFromRelatedPartyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OutstandingBalancesWithJointVenturesAbstract" id="ceo_OutstandingBalancesWithJointVenturesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OtherCurrentAssetsDueFromJointVentures" id="ceo_OtherCurrentAssetsDueFromJointVentures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="TransactionsAndBalancesWithOtherStateownedEnterprisesAbstract" id="ceo_TransactionsAndBalancesWithOtherStateownedEnterprisesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TermOfLongTermSaleContracts" id="ceo_TermOfLongTermSaleContracts" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfRetirementBenefitsTable" id="ceo_DisclosureOfRetirementBenefitsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TypesOfRetirementBenefitsAxis" id="ceo_TypesOfRetirementBenefitsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TypesOfRetirementBenefitsMember" id="ceo_TypesOfRetirementBenefitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="StatemanagedRetirementBenefitPlanMember" id="ceo_StatemanagedRetirementBenefitPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DefinedContributionMandatoryProvidentFundMember" id="ceo_DefinedContributionMandatoryProvidentFundMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfRetirementBenefitsLineItems" id="ceo_DisclosureOfRetirementBenefitsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="RatioOfContributionToSalariesOfEmployees" id="ceo_RatioOfContributionToSalariesOfEmployees" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="ReconciliationOfProfitLossBeforeTaxToCashGeneratedFromOperationsAbstract" id="ceo_ReconciliationOfProfitLossBeforeTaxToCashGeneratedFromOperationsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AdjustmentsForDecreaseIncreaseInTradeReceivablesAndOtherCurrentAssets" id="ceo_AdjustmentsForDecreaseIncreaseInTradeReceivablesAndOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="AdjustmentsForDecreaseIncreaseInTradeAndOtherPayablesAccruedLiabilitiesContractLiabilities" id="ceo_AdjustmentsForDecreaseIncreaseInTradeAndOtherPayablesAccruedLiabilitiesContractLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCapitalCommitmentsTable" id="ceo_DisclosureOfCapitalCommitmentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfCapitalCommitmentsLineItems" id="ceo_DisclosureOfCapitalCommitmentsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PeriodOfEstimatedPaymentsIncludedInCapitalCommitmentsWithRespectToExplorationAndProductionLicenses" id="ceo_PeriodOfEstimatedPaymentsIncludedInCapitalCommitmentsWithRespectToExplorationAndProductionLicenses" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="EstimatedFairValueOfLongTermGuaranteedNotes" id="ceo_EstimatedFairValueOfLongTermGuaranteedNotes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="OtherCurrentFinancialAssetsMember" id="ceo_OtherCurrentFinancialAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PetrochinaCompanyLimitedMember" id="ceo_PetrochinaCompanyLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="Phillips66Member" id="ceo_Phillips66Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CastlePeakPowerStationMember" id="ceo_CastlePeakPowerStationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="BPplcMember" id="ceo_BPplcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="GroupsLargestThirdpartyCustomerMember" id="ceo_GroupsLargestThirdpartyCustomerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="FiveLargestThirdpartyCustomersMember" id="ceo_FiveLargestThirdpartyCustomersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfTradeReceivablesBenchmarkToMeasureConcentrationOfCreditRisk" id="ceo_PercentageOfTradeReceivablesBenchmarkToMeasureConcentrationOfCreditRisk" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfAppreciationInRenminbiAgainstUsDollars" id="ceo_PercentageOfAppreciationInRenminbiAgainstUsDollars" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfDepreciationInRenminbiAgainstUsDollars" id="ceo_PercentageOfDepreciationInRenminbiAgainstUsDollars" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfGroupsCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsDenominatedInRenminbi" id="ceo_PercentageOfGroupsCashAndCashEquivalentsAndTimeDepositsWithMaturityOverThreeMonthsDenominatedInRenminbi" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfChangeInForeignExchangeRateOfUsDollars" id="ceo_PercentageOfChangeInForeignExchangeRateOfUsDollars" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfChangeInProfitLoss" id="ceo_PercentageOfChangeInProfitLoss" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfChangeInEquity" id="ceo_PercentageOfChangeInEquity" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PercentageOfGroupsDebtsThatInterestRatesAreFixed" id="ceo_PercentageOfGroupsDebtsThatInterestRatesAreFixed" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="WeightedAverageTermOfGroupsDebtBalanceOutstanding" id="ceo_WeightedAverageTermOfGroupsDebtBalanceOutstanding" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SettlementTermOfTradeAndAccruedPayablesOtherPayablesAndAccruedLiabilities" id="ceo_SettlementTermOfTradeAndAccruedPayablesOtherPayablesAndAccruedLiabilities" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="TotalCapitalFinancialRiskManagementObjectivesAndPolicies" id="ceo_TotalCapitalFinancialRiskManagementObjectivesAndPolicies" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="DebtToCapitalRatio" id="ceo_DebtToCapitalRatio" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="TypesOfAgreementsInRespectOfRelatedPartyTransactionsMember" id="ceo_TypesOfAgreementsInRespectOfRelatedPartyTransactionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2011LimitedNoteTwoMember" id="ceo_CnoocFinance2011LimitedNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2012LimitedNoteTwoMember" id="ceo_CnoocFinance2012LimitedNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2013LimitedNoteThreeMember" id="ceo_CnoocFinance2013LimitedNoteThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2013LimitedNoteFourMember" id="ceo_CnoocFinance2013LimitedNoteFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2013LimitedNoteTwoMember" id="ceo_CnoocFinance2013LimitedNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2014UlcNoteTwoMember" id="ceo_CnoocFinance2014UlcNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015AustraliaPtyLtdNoteTwoMember" id="ceo_CnoocFinance2015AustraliaPtyLtdNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DepositsRelatedPartyTransactions" id="ceo_DepositsRelatedPartyTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="NotesOfLoansAndBorrowingsIssuedByEntities" id="ceo_NotesOfLoansAndBorrowingsIssuedByEntities" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IssuedByCompanyAxis" id="ceo_IssuedByCompanyAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IssuedByCompanyMember" id="ceo_IssuedByCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcNoteOneMember" id="ceo_CnoocPetroleumNorthAmericaUlcNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcNoteTwoMember" id="ceo_CnoocPetroleumNorthAmericaUlcNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcNoteThreeMember" id="ceo_CnoocPetroleumNorthAmericaUlcNoteThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcNoteFourMember" id="ceo_CnoocPetroleumNorthAmericaUlcNoteFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocPetroleumNorthAmericaUlcNoteFiveMember" id="ceo_CnoocPetroleumNorthAmericaUlcNoteFiveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015USALlcNoteOneMember" id="ceo_CnoocFinance2015USALlcNoteOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015USALlcNoteTwoMember" id="ceo_CnoocFinance2015USALlcNoteTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CnoocFinance2015USALlcNoteThreeMember" id="ceo_CnoocFinance2015USALlcNoteThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfSegmentFinancialInformationTableExplanatory" id="ceo_DisclosureOfSegmentFinancialInformationTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutSpecialOilGainLevyTable" id="ceo_DisclosureOfDetailedInformationAboutSpecialOilGainLevyTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutSpecialOilGainLevyLineItems" id="ceo_DisclosureOfDetailedInformationAboutSpecialOilGainLevyLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProgressiveRateOfSpecialOilGainLevy" id="ceo_ProgressiveRateOfSpecialOilGainLevy" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NumberOfSpecialOilGainLevyLevels" id="ceo_NumberOfSpecialOilGainLevyLevels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="ThresholdOfSpecialOilGainLevyMeasuredInTermsOfMonthlyWeightedAverageSalesPriceOfCrudeOil" id="ceo_ThresholdOfSpecialOilGainLevyMeasuredInTermsOfMonthlyWeightedAverageSalesPriceOfCrudeOil" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LoansAndBorrowingsMember" id="ceo_LoansAndBorrowingsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DividendPayableMember" id="ceo_DividendPayableMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AwardsExpenseNotUltimatelyVestForGroup" id="ceo_AwardsExpenseNotUltimatelyVestForGroup" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="ShareOptionsCancelledOrModifiedInSharebasedPaymentTransactions" id="ceo_ShareOptionsCancelledOrModifiedInSharebasedPaymentTransactions" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OtherFinancialAssetsMember" id="ceo_OtherFinancialAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CurrentPortionForDismantlementClassifiedAsOtherPayablesAndAccruedLiabilities" id="ceo_CurrentPortionForDismantlementClassifiedAsOtherPayablesAndAccruedLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="Reserves" id="ceo_Reserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="NameOfEmployeesAxis" id="ceo_NameOfEmployeesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NameOfEmployeesMember" id="ceo_NameOfEmployeesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProvisionForInventoryObsolescence" id="ceo_ProvisionForInventoryObsolescence" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="MaturityOfNoncurrentLoansAndBorrowings" id="ceo_MaturityOfNoncurrentLoansAndBorrowings" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SafetyFundReserve" id="ceo_SafetyFundReserve" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="MaximumDailyOutstandingBalanceForDepositsAndInterestFromRelatedParties" id="ceo_MaximumDailyOutstandingBalanceForDepositsAndInterestFromRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="IncreaseDecreaseThroughDividendsDeclaredLiabilitiesArisingFromFinancingActivities" id="ceo_IncreaseDecreaseThroughDividendsDeclaredLiabilitiesArisingFromFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="NominalValueOfOrdinarySharesIssuedAndPaidupOrRegisteredCapital" id="ceo_NominalValueOfOrdinarySharesIssuedAndPaidupOrRegisteredCapital" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OilAndGasSaleActivitiesMember" id="ceo_OilAndGasSaleActivitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfProvisionOfServicesByRelatedPartiesTableExplanatory" id="ceo_DisclosureOfProvisionOfServicesByRelatedPartiesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfInterestIncomeReceivedFromRelatedPartiesRelatedPartyTransactions" id="ceo_DisclosureOfInterestIncomeReceivedFromRelatedPartiesRelatedPartyTransactions" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDepositsBalancesWithRelatedPartiesRelatedPartyTransactions" id="ceo_DisclosureOfDepositsBalancesWithRelatedPartiesRelatedPartyTransactions" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfSaleOfProductsToRelatedPartiesTableExplanatory" id="ceo_DisclosureOfSaleOfProductsToRelatedPartiesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CapitalExpenditure" id="ceo_CapitalExpenditure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="RevenueRecognizedFromContractsWithCustomersAbstract" id="ceo_RevenueRecognizedFromContractsWithCustomersAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProceedsFromSalesOfEquityInvestmentsClassifiedAsInvestingActivities" id="ceo_ProceedsFromSalesOfEquityInvestmentsClassifiedAsInvestingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfDetailedInformationAboutOilAndGasSalesAndMarketingRevenuesLineItems" id="ceo_DisclosureOfDetailedInformationAboutOilAndGasSalesAndMarketingRevenuesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="EntityClassificationsSectorAndEntityAxis" id="ceo_EntityClassificationsSectorAndEntityAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="SectorAndEntityMember" id="ceo_SectorAndEntityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="HighAndNewTechnologyEnterpriseMember" id="ceo_HighAndNewTechnologyEnterpriseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CurrentTaxExpenseIncomeAbstract" id="ceo_CurrentTaxExpenseIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfContractLiabilitiesExplanatory" id="ceo_DisclosureOfContractLiabilitiesExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfContractLiabilitiesTableExplanatory" id="ceo_DisclosureOfContractLiabilitiesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DefaultOfPrincipalInterestOrRedemptionTermsOfLoansAndBorrowings" id="ceo_DefaultOfPrincipalInterestOrRedemptionTermsOfLoansAndBorrowings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="NoteToConsolidatedStatementOfCashFlowsAbstract" id="ceo_NoteToConsolidatedStatementOfCashFlowsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfSegmentMajorCustomersTableExplanatory" id="ceo_DisclosureOfSegmentMajorCustomersTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CarryingAmountsOfOtherReceivablesIncludedInOtherCurrentAssets" id="ceo_CarryingAmountsOfOtherReceivablesIncludedInOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element name="TimesOfReviewingLimitsAndScoringAttributedToCounterpartiesPerYear" id="ceo_TimesOfReviewingLimitsAndScoringAttributedToCounterpartiesPerYear" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DepositsFromRelatedPartyAbstract" id="ceo_DepositsFromRelatedPartyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="EquitysettledShareOptionExpense" id="ceo_EquitysettledShareOptionExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="CurrentPortionOfNoncurrentLoansReceived" id="ceo_CurrentPortionOfNoncurrentLoansReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="RepaymentsOfLeaseLiabilities" id="ceo_RepaymentsOfLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfAmortizationExpenseRelatingToLeaseRentalsAbstract" id="ceo_DisclosureOfAmortizationExpenseRelatingToLeaseRentalsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfBandsOfRemunerationOfOtherKeyManagementPersonnelExcludingDirectorsAndRelatedNumberTableExplanatory" id="ceo_DisclosureOfBandsOfRemunerationOfOtherKeyManagementPersonnelExcludingDirectorsAndRelatedNumberTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="AmortisationPeriodOfIntangibleAssetsOnStraightlineBasis" id="ceo_AmortisationPeriodOfIntangibleAssetsOnStraightlineBasis" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="JiangsuShuangchuangRenewableEnergyDevelopmentCorporationLimitedMember" id="ceo_JiangsuShuangchuangRenewableEnergyDevelopmentCorporationLimitedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ArcticLng2LlcMember" id="ceo_ArcticLng2LlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ProvisionDeletedOtherProvisions" id="ceo_ProvisionDeletedOtherProvisions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="NewLeaseEnteredLiabilitiesArisingFromFinancingActivities" id="ceo_NewLeaseEnteredLiabilitiesArisingFromFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="FloatingProductionStorageAndOffloadingVesselsMember" id="ceo_FloatingProductionStorageAndOffloadingVesselsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="PipelineMember" id="ceo_PipelineMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LeaseholdLandsMember" id="ceo_LeaseholdLandsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="IncreaseDecreaseThroughAcquisitionOfSubsidiariesUnderCommonControlEquity" id="ceo_IncreaseDecreaseThroughAcquisitionOfSubsidiariesUnderCommonControlEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="CashOutflowsFromAcquisitionOfSubsidiariesUnderCommonControlClassifiedAsFinancingActivities" id="ceo_CashOutflowsFromAcquisitionOfSubsidiariesUnderCommonControlClassifiedAsFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="EkropromstroyLimitedLiabilityCompanyMember" id="ceo_EkropromstroyLimitedLiabilityCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DeferredAcquisitionCostsArisingFromSharePurchaseAgreement" id="ceo_DeferredAcquisitionCostsArisingFromSharePurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="DisclosureOfQuantitativeInformationAboutRightofuseAssetsTableExplanatory" id="ceo_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisposalsAndRetirementsRightofuseAssets" id="ceo_DisposalsAndRetirementsRightofuseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="IncreaseDecreaseThroughNetExchangeDifferencesRightofuseAssets" id="ceo_IncreaseDecreaseThroughNetExchangeDifferencesRightofuseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="LeaseTermOfLeaseContracts" id="ceo_LeaseTermOfLeaseContracts" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="ExpenseRelatingToFixedLeasePaymentsPaidToLessors" id="ceo_ExpenseRelatingToFixedLeasePaymentsPaidToLessors" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfOtherPayablesAndAccruedLiabilitiesLineItems" id="ceo_DisclosureOfOtherPayablesAndAccruedLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeaseLiabilitiesExplanatory" id="ceo_DisclosureOfLeaseLiabilitiesExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeaseLiabilitiesTableExplanatory" id="ceo_DisclosureOfLeaseLiabilitiesTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeaseLiabilitiesTable" id="ceo_DisclosureOfLeaseLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DisclosureOfLeaseLiabilitiesLineItems" id="ceo_DisclosureOfLeaseLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="LeaseLiabilitiesPayableAbstract" id="ceo_LeaseLiabilitiesPayableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DiscountedCashFlowToPresentValueLeaseLiabilities" id="ceo_DiscountedCashFlowToPresentValueLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element name="DecreaseOfIncomeTaxRateEachYearByPercentagePoint" id="ceo_DecreaseOfIncomeTaxRateEachYearByPercentagePoint" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsLiability" id="ceo_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element name="WeightedAverageInterestRateComputedByAveragingInterestRates" id="ceo_WeightedAverageInterestRateComputedByAveragingInterestRates" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NumberOfRedeemableSharesSubscribedByEntity" id="ceo_NumberOfRedeemableSharesSubscribedByEntity" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
<xsd:element name="DescriptionOfAccountingPolicyForBusinessCombinationsAssetAcquisitionsAndGoodwillExplanatory" id="ceo_DescriptionOfAccountingPolicyForBusinessCombinationsAssetAcquisitionsAndGoodwillExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="CumulativeEffectOnRetainedEarningsDueToImpactOfAdoptingNewAccountingPolicies" id="ceo_CumulativeEffectOnRetainedEarningsDueToImpactOfAdoptingNewAccountingPolicies" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element name="NorthAmericaAndChinaMember" id="ceo_NorthAmericaAndChinaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="NotthAmericaAfricaAndChinaMember" id="ceo_NotthAmericaAfricaAndChinaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
<xsd:element name="OtherPayablesAndAccruedLiabilitiesExcludingPayablesDueToParentCompany" id="ceo_OtherPayablesAndAccruedLiabilitiesExcludingPayablesDueToParentCompany" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
</xsd:schema>


24 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 4/22/20  Cnooc Ltd.                        20-F       12/31/19  192:21M                                    Davis Polk & … LLP 01/FA
 9/30/19  Cnooc Ltd.                        6-K         9/30/19    6:202K                                   Davis Polk & … LLP 01/FA
 9/20/19  Cnooc Ltd.                        POSASR      9/20/19   13:1.1M                                   Donnelley … Solutions/FA
 4/20/18  Cnooc Ltd.                        F-3ASR      4/20/18   13:1M                                     Donnelley … Solutions/FA
 4/21/17  Cnooc Ltd.                        20-F       12/31/16   17:5.6M                                   Davis Polk & … LLP 01/FA
 3/17/16  JPMorgan Chase Bank N… Depositary F-6EF       3/17/16    4:384K Cnooc Ltd.                        E-Data Systems, Inc./FA
 5/05/15  Cnooc Ltd.                        6-K         5/05/15    1:384K                                   Davis Polk & … LLP 01/FA
 4/27/15  Cnooc Ltd.                        POSASR      4/27/15   15:1.4M                                   Donnelley … Solutions/FA
 4/22/15  Cnooc Ltd.                        20-F       12/31/14   20:11M                                    Davis Polk & … LLP 01/FA
 5/01/14  Cnooc Ltd.                        6-K         5/01/14    1:176K                                   Donnelley … Solutions/FA
 4/22/14  Cnooc Ltd.                        POSASR      4/22/14   16:905K                                   Donnelley … Solutions/FA
 5/09/13  Cnooc Ltd.                        6-K         5/09/13    1:220K                                   Donnelley … Solutions/FA
 5/01/13  Cnooc Ltd.                        F-3ASR      5/01/13   14:1.1M                                   Donnelley … Solutions/FA
 4/24/13  Cnooc Ltd.                        20-F       12/31/12   20:13M                                    Davis Polk & … LLP 01/FA
 3/22/13  Cnooc Ltd.                        6-K         3/22/13    6:657K                                   Davis Polk & … LLP 01/FA
 3/30/12  Cnooc Ltd.                        6-K         3/30/12    1:881K                                   Davis Polk & … LLP 01/FA
 4/29/11  Cnooc Ltd.                        20-F       12/31/10   11:12M                                    Davis Polk & … LLP 01/FA
 5/08/09  Cnooc Ltd.                        20-F       12/31/08    7:5.6M                                   Davis Polk & … LLP 01/FA
 6/26/08  Cnooc Ltd.                        20-F       12/31/07    9:9.2M                                   Davis Polk & … LLP 01/FA
 6/26/06  Cnooc Ltd.                        20-F       12/31/05   20:1.2M                                   Sidley Austin LLP/FA
 6/22/05  Cnooc Ltd.                        20-F       12/31/04    6:795K                                   Sidley Austin LLP/FA
 6/23/04  Cnooc Ltd.                        20-F       12/31/03    1:811K                                   Sidley Austin LLP/FA
 5/13/03  Cnooc Ltd.                        20-F       12/31/02    3:833K                                   Sidley Austin LLP/FA
 5/23/02  Cnooc Ltd.                        20-F       12/31/01    3:529K                                   Sidley Austin LLP/FA
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