Method of decreasing gas/oil ratio during cyclic huff-n-puff pra

Details Method of decreasing gas/oil ratio during cyclic huff-n-puff pra Method of decreasing gas/oil ratio during cyclic huff-n-puff pra

1993-09-22

1995-05-09

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

1663051, E21B 33138, E21B 4322

Patent

active

054131774

ABSTRACT:
A method of recovering hydrocarbons from an underground reservoir with a cyclic injection/production process, wherein after one or more injection and production cycles, a second recovery fluid is injected into the formation comprising a cosolvent, a solute, preferably polydimethylsiloxane, and the primary recovery fluid such as carbon dioxide, said second fluid composition designed for solute to drop out of solution in the formation during the later soaking and production phases.

REFERENCES:
patent: 2876840 (1959-03-01), Berry, Jr.
patent: 3093192 (1963-06-01), Allen
patent: 3411583 (1968-11-01), Holm et al.
patent: 4130165 (1978-12-01), Fast et al.
patent: 4205723 (1980-06-01), Clauset, Jr.
patent: 5095984 (1992-03-01), Irani

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