Use of surfactants to improve oil recovery during steamflooding

Details Use of surfactants to improve oil recovery during steamflooding Use of surfactants to improve oil recovery during steamflooding

1982-04-29

1984-07-10

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166303, E21B 4324

Patent

active

044587597

ABSTRACT:
An improvement is provided in an in situ steamflooding process for recovering oil from a subterranean, heavy oil-containing reservoir. An organic sulfonate surfactant, for example a petroleum sulfonate surfactant, is injected with the steam into the reservoir. The steam-surfactant injection stream is introduced to the reservoir at a temperature in the range of about 180.degree. C. to 260.degree. C. The process may be practised in a single well or multi-well pattern using any of a continuous steam drive, steam soak or cyclic steam recovery program. A substantial increase in oil recovery is achieved by this process, as compared to a steam-only injection scheme.

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patent: 3782472 (1974-01-01), Siess, Jr.
patent: 4068716 (1978-01-01), Allen
patent: 4085800 (1978-04-01), Engle et al.
patent: 4187185 (1980-02-01), Park et al.
patent: 4207945 (1980-06-01), Hall et al.

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