Cosurfactant enhanced alkaline flooding in an anhydrite formatio

Details Cosurfactant enhanced alkaline flooding in an anhydrite formatio Cosurfactant enhanced alkaline flooding in an anhydrite formatio

1988-04-13

1989-09-05

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 8554, E21B 4322

Patent

active

048629634

ABSTRACT:
In cosurfactant enhanced alkaline flooding of a formation containing anhydrite, the pH of the flooding material is maintained at a high lvel by the addition of an alkali metal sulfate or ammonium sulfate.

REFERENCES:
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patent: 4466892 (1984-08-01), Chan et al.
patent: 4502541 (1985-03-01), Lawson et al.
patent: 4609044 (1986-09-01), Lau
patent: 4727938 (1988-03-01), Lau
patent: 35846866 (1971-06-01), Fulford

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