04513821 is referenced by 41 patents and cites 5 patents.

Oil is recovered by a CO.sub.2 miscible oil recovery method in which the CO.sub.2 minimum miscibility pressure of the oil-containing formation is lowered by injecting a coolant into the formation. The formation is then pressurized to a pressure at least that of the reduced CO.sub.2 minimum miscibility pressure by injecting a fluid therein. A slug of carbon dioxide is then injected into the formation at the formation pressure whereby the carbon dioxide is miscible with the formation oil and thereafter a driving agent is injected to displace the formation oil and carbon dioxide toward a production well from which oil is produced.

Title
Lowering CO.sub.2 MMP and recovering oil using carbon dioxide
Application Number
6/576696
Publication Number
4513821
Application Date
February 3, 1984
Publication Date
April 30, 1985
Inventor
Winston R Shu
Dallas
TX, US
Agent
Lawrence O Miller
Michael G Gilman
Alexander J McKillop
Assignee
Mobil Oil Corporation
NY, US
IPC
E21B 43/20
E21B 43/16
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