Wells – Processes – Distinct – separate injection and producing wells
Patent
1983-12-08
1985-11-26
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166246, 166275, 252 855D, E21B 4322
Patent
active
045549745
ABSTRACT:
A method is disclosed for recovering petroleum from a subterranean reservoir penetrated by at least one injection well and at least one production well comprising: injecting into the reservoir through the injection well a surfactant slug comprising an aqueous solution containing about 0.001 to about 5% by weight of an amphoteric surfactant and an effective amount of a high molecular weight homopolysaccharide gum thickener derived from fungus strains of the genus Schlerotium to provide the surfactant slug with a viscosity exceeding the viscosity of the petroleum in the reservoir; and recovering fluid from the production well.
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Chan Keng S.
Kalpakci Bayram
Evans Larry W.
Heidrich William A.
Suchfield George A.
The Standard Oil Company
Untener David J.
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