Method of recovering medium or high gravity crude oil

Details Method of recovering medium or high gravity crude oil Method of recovering medium or high gravity crude oil

1984-11-21

1986-12-02

Suchfield, George A.

Wells

Processes

In situ combustion

166261, 166272, E21B 43243

Patent

active

046258000

ABSTRACT:
An improved tertiary recovery method for obtaining medium and high gravity crude oil from subsurface formations is disclosed wherein the gravity of the crude oil is downgraded. An in-situ combustion method is used where the boiling temperature of a light viscous crude is altered to provide residual coke, enabling sustained combustion.

REFERENCES:
patent: 3019837 (1962-02-01), Marx
patent: 3542129 (1970-11-01), Bauer
patent: 3978925 (1976-09-01), Redford
patent: 4024915 (1977-05-01), Allen

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