Wells – Processes – Distinct – separate injection and producing wells
Patent
1982-10-27
1984-11-06
Guynn, Herbert B.
Wells
Processes
Distinct, separate injection and producing wells
166274, 252 855D, 252353, E21B 4322
Patent
active
044806922
ABSTRACT:
A surfactant system useful for oil recovery consisting essentially of a surfactant, such as a petroleum sulfonate, and at least one cosurfactant selected from the group consisting of a phosphate ester of the formula: ##STR1## and a phosphite ester represented by the formula ##STR2## and a phosphonate ester represented by the formula ##STR3## wherein R is either a methyl, ethyl or propyl group.
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Guynn Herbert B.
Phillips Petroleum Company
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