03993132 is referenced by 230 patents and cites 9 patents.

A method for the recovery of low API gravity viscous oils or bitumen from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam having an optimum gas/steam ratio that is decreased as the cumulative amount of steam is increased.

Title
Thermal recovery of hydrocarbons from tar sands
Application Number
5/588124
Publication Number
3993132
Application Date
June 18, 1975
Publication Date
November 23, 1976
Inventor
David A Redford
Fort Saskatchewan
CA
Phillip J Cram
Calgary
CA
Agent
Charles L Bauer
Carl G Ries
Thomas H Whaley
Assignee
Texaco Exploration Canada
CA
IPC
E21B 43/24
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