Compositions for use in steam enhanced oil recovery processes

Details Compositions for use in steam enhanced oil recovery processes Compositions for use in steam enhanced oil recovery processes

1990-02-28

1990-12-04

Stoll, Robert L.

Compositions

Leather or fur treating

E21B 4322, E21B 4324, E21B 33128

Patent

active

049752081

ABSTRACT:
A composition for use in enhanced oil recovery procedures comprises steam having a vapor phase and a liquid phase and a fluorocarbon surfactant partitioned between the liquid and vapor phases. The partitioning of the fluorocarbon surfactant between the two phases is accomplished by maintaining the composition's pH at less than about 11, and preferably within the range of 7 to about 11. By varying the fluorocarbon surfactant concentration, the composition can be used as a surface tension depressant well stimulation additive and/or as a foam former for selectively blocking more permeable portions of a formation.

REFERENCES:
patent: 4432882 (1984-02-01), Raynolds et al.
patent: 4536384 (1985-08-01), Borchardt
patent: 4775489 (1988-10-01), Watkins et al.
patent: 4836281 (1989-06-01), Robin et al.
patent: 4921619 (1990-05-01), Karydas

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