Bitumen production method
AssigneeLinde Aktiengesellschaft
InventorsDonald Prentice Satchell, Jr., Stevan Jovanovic
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Abstract
A method for the production of a CO2 rich stream for sequestration in depleted oil sand reservoirs. The method comprises the steps of: a) purging non-condensable gases from an oil sand reservoir with steam; b) contacting a gaseous oxidant stream comprising oxygen, carbon dioxide, and steam with bitumen in an oil reservoir; c) separating the production well product from the oil sand reservoir into bitumen, water, sand and fuel gas streams; d) producing a carbon dioxide rich gas by combustion of the said fuel gas with substantially pure oxygen; e) utilizing substantially pure oxygen and a portion of said carbon dioxide rich gas as constituents of said gaseous oxidant stream; and f) sequestering a balance of said carbon dioxide rich gas into a depleted oil said reservoir.
Claims10
A method of in situ bitumen or heavy oil production comprising a) purging non-condensable gases from an oil sand reservoir with steam;
- b) contacting a gaseous oxidant stream with bitumen in an oil sand reservoir;
- c) separating a production well product from the oil sand reservoir into bitumen, water, sand, and fuel gas streams;
- d) producing a carbon dioxide rich gas by combustion of said fuel gas with substantially pure oxygen having an oxygen content greater than 70 molar percent;
- e) blending substantially pure oxygen having an oxygen content greater than 70 molar percent and a portion of said carbon dioxide rich gas as constituents of said gaseous oxidant stream;
- and f) sequestering a balance of the said carbon dioxide rich gas into a depleted oil sand reservoir.
Dependencies are inferred from the claim text.