Wells – Processes – In situ combustion
Patent
1977-08-17
1978-11-28
Novosad, Stephen J.
Wells
Processes
In situ combustion
166261, E21B 4324
Patent
active
041271718
ABSTRACT:
A two-step method for recovering hydrocarbons from a subterranean formation in which in situ combustion is first initiated in the formation by injection of air, for example, through an injection well, the injection of air is terminated and in a final step a combustion-supporting gas such as air, air mixed with oxygen, etc. and a combustible gas such as hdyrogen, carbon monoxide and mixtures thereof are introduced into the formation preferably through separate sets of casing perforations and finally hydrocarbons are recovered via a production well.
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Hunter Walter D.
Novosad Stephen J.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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