Cnooc Ltd – ‘20-F’ for 12/31/04 – EX-12.1

On:  Wednesday, 6/22/05, at 10:35am ET   ·   For:  12/31/04   ·   Accession #:  905148-5-3391   ·   File #:  1-14966

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Annual Report of a Foreign Private Issuer   —   Form 20-F
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 20-F        Cnooc                                                201   1.08M 
 2: EX-2.2      Plan of Acquisition, Reorganization, Arrangement,     52    191K 
                          Liquidation or Succession                              
 3: EX-8.1      Opinion re: Tax Matters                                1      7K 
 4: EX-12.1     Statement re: Computation of Ratios                    2±     9K 
 5: EX-12.2     Statement re: Computation of Ratios                    2±     9K 
 6: EX-13.1     Annual or Quarterly Report to Security Holders         1      7K 

EX-12.1   —   Statement re: Computation of Ratios

                                                                EXHIBIT 12.1

Certification 

I, Chengyu Fu, Chairman and Chief Executive Officer of CNOOC Limited, certify   
that:                                                                           

1.   I have reviewed this annual report on Form 20-F of CNOOC Limited;          

2.   Based on my knowledge, this annual report does not contain any untrue      
 statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which
such statements were made, not misleading with respect to the period  
covered by this annual report;                                        

3.   Based on my knowledge, the financial statements, and other financial       
information included in this annual report, fairly present in all     
   material respects the financial condition, results of operations and cash
flows of the registrant as of, and for, the periods presented in this 
annual report;                                                        

4.   The registrant's other certifying officers and I are responsible for       
establishing and maintaining disclosure controls and procedures (as   
   defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant
and have:                                                             

(a)  designed such disclosure controls and procedures, or caused such 
disclosure controls and procedures to be designed under our 
    supervision, to ensure that material information relating to the
      registrant, including its consolidated subsidiaries, is made known
  to us by others within those entities, particularly during the
period in which this annual report is being prepared;       

  (b)  evaluated the effectiveness of the registrant's disclosure controls
      and procedures and presented in this annual report our conclusions
      about the effectiveness of the disclosure controls and procedures,
      as of the end of the period covered by this annual report based on
such evaluation; and                                        

(c)  disclosed in this annual report any change in the registrant's   
      internal control over financial reporting that occurred during the
      period covered by this annual report that has materially affected,
  or is reasonably likely to materially affect, the registrant's
internal control over financial reporting; and              

5.   The registrant's other certifying officers and I have disclosed, based on  
  our most recent evaluation of internal control over financial reporting,
to the registrant's auditors and the audit committee of registrant's  
board of directors (or persons performing the equivalent functions):  

 (a)  all significant deficiencies and material weaknesses in the design
       or operation of internal control over financial reporting which are
     reasonably likely to adversely affect the registrant's ability to
    record, process, summarize and report financial information; and

(b)  any fraud, whether or not material, that involves management or  
   other employees who have a significant role in the registrant's
internal control over financial reporting.                  

Date:  June 22, 2005                                                            

   By:    /s/ Chengyu Fu
                       -------------------------------
          Name:   Chengyu Fu
                                  Title:  Chairman & Chief Executive Officer

Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘20-F’ Filing		Date		Other Filings
Filed on:		6/22/05
For Period End:		12/31/04		20-F/A
				List all Filings

1 Subsequent Filing that References this Filing

  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