Wells – Processes – Distinct – separate injection and producing wells
Reexamination Certificate
2011-01-11
2011-01-11
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Distinct, separate injection and producing wells
C166S057000, C166S075120, C166S090100, C166S267000, C166S303000, C166S371000
Reexamination Certificate
active
07866389
ABSTRACT:
A method for recovering hydrocarbons from a reservoir includes separating air into a nitrogen-rich gas and an oxygen-rich gas, oxidizing a hydrocarbon fuel with at least part of the oxygen-rich gas to produce steam and a CO2-rich gas, injecting at least part of the steam through an injection well into the reservoir to heat the hydrocarbons, purging the injection well with at least part of the nitrogen-rich gas, and injecting at least part of the CO2-rich gas into the reservoir containing the heated hydrocarbons.
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PCT Search Report and Written Opinion for PCT/EP2008/050436.
Cieutat Denis
De Francesco Errico
De-Smedt Guillaume
Di Zanno Pietro
Bates Zakiya W.
Haynes Elwood L.
L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des
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