04565249 is referenced by 67 patents and cites 8 patents.

A method for the recovery of viscous oil from subterranean formations including tar sands by the injection of a mixture of carbon dioxide and steam into the formation through an injection well, after which formation fluids are recovered from the well in a cyclic manner, using the well alternately for injection and production. Incremental recovery is optimized by maintaining the ratio of carbon dioxide to steam within the range 200 to 300, preferably 230 to 270 SCF carbon dioxide per barrel of steam (with water equivalent) in the injected mixture.

Title
Heavy oil recovery process using cyclic carbon dioxide steam stimulation
Application Number
561407
Publication Number
4565249
Application Date
September 20, 1984
Publication Date
January 21, 1986
Inventor
Winston R Shu
Dallas
TX, US
Farrokh N Pebdani
Coppell
TX, US
Agent
Charles J Speciale
Michael G Gilman
Alexander J McKillop
Assignee
Mobil Oil Corporation
NY, US
IPC
E21B 43/24
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