Wells – Processes – In situ combustion
Patent
1986-12-24
1988-02-02
Suchfield, George A.
Wells
Processes
In situ combustion
166272, E21B 43243
Patent
active
047223952
ABSTRACT:
A viscous oil-bearing formation is produced by a steam flood technique in which the quality of the steam injected into the formation through an injection well is improved in-situ by the generation of an in-situ heat zone which trails along behind the front of the steam flood. This in-situ heat zone is generated by the injection of a non-condensable oxidant which reacts with the residual oil left behind the steam front in the steam swept zone. The oxidant injection is controlled so that the velocity of the heat zone through the formation is no greater than the velocity of the steam front, thereby preventing heat zone breakthrough of the steam front.
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Gilman Michael G.
McKillop Alexander J.
Miller Lawrence O.
Mobil Oil Corporation
Suchfield George A.
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