Combined surface and in situ tar sand bitumen production

Details Combined surface and in situ tar sand bitumen production Combined surface and in situ tar sand bitumen production

1983-06-09

1985-02-19

Novosad, Stephen J.

Wells

Processes

In situ combustion

299 4, E21B 43243

Patent

active

044999496

ABSTRACT:
In-situ combustion of tar sand formations is improved by introducing into an unminable tar sand formation prior to initiation of in-situ combustion hydrogen sulfide produced from upgrading tar sands from a minable tar sand formation in an area proximate the area of the unminable formation. The stream of hydrogen sulfide may contain a small proportion of hydrocarbons condensible at temperature and pressure conditions of the unminable formation. The improvement is applicable to both forward and reverse in-situ combustion processes.

REFERENCES:
patent: 3415573 (1968-12-01), Fraser
patent: 3799613 (1974-03-01), Hendry
patent: 4241790 (1980-12-01), Magnie
patent: 4379489 (1983-05-01), Rollmann
patent: 4397359 (1983-08-01), Audeh
patent: 4399314 (1983-08-01), Child

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