Tall oil as additive in gas drive hydrocarbon oil recovery

Details Tall oil as additive in gas drive hydrocarbon oil recovery Tall oil as additive in gas drive hydrocarbon oil recovery

1985-12-31

1988-04-12

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, E21B 4322

Patent

active

047367938

ABSTRACT:
A gas-drive hydrocarbon oil recovery process comprises injecting into a subterranean, viscous oil-containing formation tall oil to reduce the minimum miscibility pressure (MMP) of the reservoir oil-displacing fluid system and increase the viscosity of the displacing fluid. The tall oil is injected as a separate slug either simultaneously with or before the injection of a slug of the displacing fluid. A drive fluid may also be injected into the formation after the injection of the displacing fluid and tall oil to aid in the recovery of the formation oil.

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patent: 4561501 (1985-12-01), Shaw et al.
patent: 4605066 (1986-08-01), Djabbarah

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