Method for production of heavy oil from tar sands

Details Method for production of heavy oil from tar sands Method for production of heavy oil from tar sands

1980-11-24

1983-04-12

Novosad, Stephen J.

Wells

Processes

Separating material entering well

166272, 166274, 166300, E21B 4322, E21B 4324, E21B 4340

Patent

active

043794890

ABSTRACT:
An enhanced recovery process in which liquid sulfur is burned in an oyxgen-containing gas underground to form SO.sub.2. The SO.sub.2 may itself act as a drive fluid for the recovery of oil or it may react with limestone in the formation to form CO.sub.2, an alternate drive fluid.

REFERENCES:
patent: 2910123 (1959-10-01), Elkins
patent: 3167119 (1965-01-01), Meadors
patent: 3249157 (1966-05-01), Brigham et al.
patent: 3259187 (1966-07-01), Prats et al.
patent: 3326289 (1967-06-01), Mulder
patent: 3333632 (1967-08-01), Kyte
patent: 3353597 (1967-11-01), Mulder

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