Thermal recovery of hydrocarbons from tar sands

Details Thermal recovery of hydrocarbons from tar sands Thermal recovery of hydrocarbons from tar sands

1975-06-18

1976-11-23

Novosad, Stephen J.

Wells

Processes

In situ combustion

166272, E21B 4324

Patent

active

039931323

ABSTRACT:
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.

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patent: 3171479 (1965-03-01), Parrish et al.
patent: 3196945 (1965-07-01), Craig, Jr. et al.
patent: 3411578 (1968-11-01), Holmes
patent: 3448807 (1969-06-01), Strickland, Jr.
patent: 3483924 (1969-12-01), Blevins et al.
patent: 3512585 (1970-05-01), Allen
patent: 3587739 (1971-06-01), Parker

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