Method for maximum in-situ visbreaking of heavy oil

Details Method for maximum in-situ visbreaking of heavy oil Method for maximum in-situ visbreaking of heavy oil

1982-04-05

1985-07-23

Suchfield, George A.

Wells

Processes

Heating, cooling or insulating

E21B 4324

Patent

active

045304017

ABSTRACT:
A method for the recovery of viscous oil from a subterranean, viscous oil-containing formation by injecting steam into the formation via at least one well at a sufficient temperature, rate, and in a sufficient amount to effect maximum visbreaking of the oil in place, terminating injection of steam and producing fluids including oil through the same well used for injecting steam. The injection-production cycle may be repeated for a plurality of cycles until the ratio of oil/water in the produced fluids is unfavorable.

REFERENCES:
patent: 345586 (1886-07-01), Hall
patent: 3129757 (1964-04-01), Sharp
patent: 3289763 (1966-12-01), Belknap
patent: 3292702 (1966-12-01), Boberg
patent: 3342260 (1967-09-01), Lumpkin
patent: 3349849 (1967-10-01), Closman
patent: 3405761 (1968-10-01), Parker
patent: 3434544 (1969-03-01), Satter et al.

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