Sequentially flooding a subterranean hydrocarbon-bearing formati

Details Sequentially flooding a subterranean hydrocarbon-bearing formati Sequentially flooding a subterranean hydrocarbon-bearing formati

1992-03-27

1993-08-03

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166268, 166273, E21B 4318, E21B 4900

Patent

active

052320499

ABSTRACT:
A process is provided for recovering liquid hydrocarbons from a subterranean hydrocarbon-bearing formation by sequential injection of a pair of immiscible gases of differing composition which displace the liquid hydrocarbons from the formation. The compositions of the displacement gases are selected such that one gas is characterized as a swelling gas and the other is characterized as a non-swelling gas with respect to the liquid hydrocarbons in place.

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