Oil recovery by surfactant waterflooding

Details Oil recovery by surfactant waterflooding Oil recovery by surfactant waterflooding

1977-04-06

1979-02-06

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, 260509, 260513N, E21B 4322

Patent

active

041383451

ABSTRACT:
A surfactant waterflooding process employing an anionic surfactant for use in oil reservoirs in which the connate waters exhibit high salinities and/or divalent metal ion concentrations in situations in which the available waters exhibit high salinities and/or divalent metal ion concentrations. The anionic surfactant comprises a hydrocarbyl amino ether-linked alkane sulfonate in which the hydrocarbyl group provides a lipophilic base and in which the ether linkage is provided by an alkoxy linkage having a ratio of carbon atoms to oxygen atoms within the range of 2 to 3. The surfactant may be a monosulfonate or disulfonate and may be employed alone or in conjunction with other additives. Thus it may be employed as a cosurfactant in combination with other anionic or nonionic surfactants or in combination with alcohols which function as surfactant cosolvents.

REFERENCES:
patent: 2860160 (1958-11-01), Sundberg et al.
patent: 3210410 (1965-10-01), Gaertner
patent: 3469630 (1969-09-01), Hurd et al.
patent: 3505396 (1970-04-01), Sanders et al.
patent: 3827497 (1974-08-01), Dycus et al.
patent: 3977471 (1976-08-01), Gale et al.
patent: 4008768 (1977-02-01), Birk

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