Process for tertiary oil recovery using tall oil pitch

Details Process for tertiary oil recovery using tall oil pitch Process for tertiary oil recovery using tall oil pitch

1983-07-25

1985-07-02

Lieberman, Paul

Wells

Processes

Distinct, separate injection and producing wells

252 855R, 252 855D, 166274, 166275, E21B 4322, C09K 300

Patent

active

045262314

ABSTRACT:
Compositions and process employing same for enhancing the recovery of residual acid crudes, particularly heavy crudes, by injecting a composition comprising caustic in an amount sufficient to maintain a pH of at least about 11, preferably at least about 13, and a small but effective amount of a multivalent cation for inhibiting alkaline silica dissolution with the reservoir. Preferably a tall oil pitch soap is included and particularly for the heavy crudes a polymeric mobility control agent.

REFERENCES:
patent: 3827977 (1974-08-01), Miles et al.
patent: 3833718 (1974-09-01), Reed et al.
patent: 3892668 (1975-07-01), Chiu
patent: 4004638 (1977-01-01), Burdyn et al.
patent: 4124072 (1978-11-01), Redford

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