Non-condensible gas injection including alpha-olefin sulfonate s

Wells – Processes – Distinct – separate injection and producing wells

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166274, 166309, E21B 4322

Patent

active

045722943

ABSTRACT:
An improved non-condensible gas injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate surfactants along with the non-condensible gas to form a gas-foam drive medium which is injected into the formation through at lest one injection well to enhance the recovery of hydrocarbons from at least one production well.

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patent: 4393937 (1983-07-01), Dilgren et al.
"Enhanced Oil Recovery by CO.sub.2 Foam Flooding", by J. T. Patton; Department of Chemical Engineering, Contract DE-AC21-78MC03259, completed 8/81.
"Evaluation of Methods for Mobility Control in CO.sub.2 Floods", J. P. Heller and J. J. Taber, New Mexico Petroleum Recovery Research Center.
"The Mechanism of Gas and Liquid Flow Through Porous Media in the Presence of Foam", by L. W. Holm, Union Oil Company, SPE #1848 (1967).
"Effect of Foam on Permeability of Porous Media to Gas", by G. G. Bernard et al., Pure Oil Company, SPE Journal, pp. 367-274 (9/1964).
"Use of Surfactant to Reduce CO.sub.2 Mobility in Oil Displacement, by G. G. Bernard et al., Union Oil Company, SPE Journal, pp. 281-292 (8/1980).

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