Oil recovery method

Details Oil recovery method Oil recovery method

1978-10-10

1980-08-19

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, E21B 4322

Patent

active

042179572

ABSTRACT:
Petroleum is extracted from a subterranean reservoir by injecting into injection wells an aqueous surfactant solution wherein the surfactant is a mixture of mono- and di-alkyl benzene polyethoxy alkyl sulfonates wherein the alkyl group contains the same number of carbon atoms in both components of the surfactant, driving the surfactant solution through the reservoir and recovering petroleum from production wells penetrating the reservoir. The fluid composition of the surfactant mixture is also claimed.

REFERENCES:
patent: 3811507 (1974-05-01), Flournoy et al.
patent: 3827497 (1974-08-01), Dycus et al.
patent: 3977471 (1976-08-01), Gale et al.
patent: 4018278 (1977-04-01), Shupe
patent: 4077471 (1978-03-01), Shupe et al.

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