Method for producing viscous hydrocarbons from discrete segments

Details Method for producing viscous hydrocarbons from discrete segments Method for producing viscous hydrocarbons from discrete segments

1983-09-01

1985-08-20

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166252, E21B 4324

Patent

active

045358451

ABSTRACT:
Method for producing viscous hydrocarbon products such as heavy crude oil or bitumen from tar sands, which products must be thermally converted into flowable condition. A discrete vertical subsection of a productive subterranean layer is marginated by a pair of spaced apart vertical wells and a horizontal well that lies substantially horizontal to the vertical wells. Controlled, pressurized flows of a heating medium such as steam are introduced to one of the vertical wells and to the horizontal well, whereby to establish a controlled thermal front. The latter is progressively urged by the pressurized steam, through the discrete vertical subsection and toward the other of the vertical wells at which hydrocarbon emulsion is produced.

REFERENCES:
patent: 4390067 (1983-06-01), Willman
patent: 4434849 (1984-03-01), Allen

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