Surfactant waterflood oil recovery method

Details Surfactant waterflood oil recovery method Surfactant waterflood oil recovery method

1978-12-11

1980-03-04

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, 252 855D, E21B 4322

Patent

active

041912535

ABSTRACT:
Oil or petroleum may be recovered from relatively high temperature, e.g. 80.degree. F. to 240.degree. F. oil-containing formations also containing water having high salinity, e.g. from 50,000 parts per million to 200,000 parts per million total dissolved solids, by injecting into the formation an aqueous fluid containing an organic sulfonate such as petroleum sulfonate and a solubilizing cosurfactant which is a sulfated or sulfonated, polyethoxylated alkylthiol, or a sulfated or sulfonated, polyethoxylated alkylarylthiol.

REFERENCES:
patent: 3142675 (1964-07-01), Rai et al.
patent: 4016932 (1977-04-01), Kalfoglou
patent: 4066124 (1976-01-01), Carlin et al.
patent: 4110228 (1978-08-01), Tyler et al.
patent: 4110229 (1978-08-01), Carlin et al.

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