- Coal gasification at mine site
- Coal liquefaction at mine site
- Coal pyrolysis
- Crude petroleum from oil sand
- Crude petroleum from oil shale
- Crude petroleum production
- Gas, natural, extraction
- Kerogen processing
- Lease condensate production
- Natural gas production
- Natural gas, offshore production
- Offshore crude petroleum production
- Offshore natural gas production
- Oil and gas field development for own account
- Oil and gas field exploration for own account
- Oil shale mining and/or beneficiating
- Petroleum, crude, production (i.e., extraction)
- Shale, oil, mining and/or beneficiating
- Stripper well production
- Tar sands mining
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