Foamable compositions and formations treatment

Details Foamable compositions and formations treatment Foamable compositions and formations treatment

1979-12-04

1981-11-17

Leppink, James A.

Wells

Processes

Distinct, separate injection and producing wells

166274, 166288, 166295, E21B 4324, E21B 33138

Patent

active

043006345

ABSTRACT:
Thermally stable foamable gelled compositions suitable for post-primary oil recovery e.g., steam- or gas-foamed systems comprising water, a surfactant, a polymeric viscosifier, an aldehyde component, and at least one phenolic component such as resorcinol, catechol, and the like, as well as selected oxidized phenolic materials such as 1,4-benzoquinone of natural or synthetic origin and natural and modified tannins. The gel compositions can additionally contain gel stabilizers such as sulfomethylated quebracho (SMQ) and chemical buffering agents such as sodium bicarbonate.

REFERENCES:
patent: 3412793 (1968-11-01), Needham
patent: 3993133 (1976-11-01), Clampitt
patent: 4085800 (1978-04-01), Engle et al.
Swanson, European Patent Application-Publication Nos. 7012 & 7013, Jan. 23, 1980.

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