Enhanced liquid hydrocarbon recovery process

Details Enhanced liquid hydrocarbon recovery process Enhanced liquid hydrocarbon recovery process

1991-03-11

1992-07-14

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166268, 166309, E21B 4322

Patent

active

051294575

ABSTRACT:
A polymer enhanced foam comprising a polymer selected from a synthetic polymer or a biopolymer, a surfactant, an aqueous solvent and a gas is injected into a fractured subterranean formation via a first well in fluid communication with the formation and preferentially enters fractures present in the formation. The injected polymer enhanced foam promotes the recovery of liquid hydrocarbons from said formation via the first well or a second well in fluid communication with the formation.

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