Secondary recovery process

Details Secondary recovery process Secondary recovery process

1992-04-13

1993-10-26

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166266, 166267, 166302, 166303, E21B 4324, E21B 4334

Patent

active

052557405

ABSTRACT:
In accordance with illustrative embodiments of the present invention, a process for the secondary recovery of oil found in a dolomite formation includes generating in-situ decomposition of the dolomite by heating it to a temperature in the range of from 1,400.degree.-1,750.degree. F. which produces a reaction that has magnesium and calcium oxides and a large quantity of carbon dioxide as products. The carbon dioxide saturates the oil in surrounding formations and makes it more movable toward one or more recovery wells. The heat is convected into the formation by a fluid that is injected into the well from the surface.

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patent: 3233670 (1966-02-01), Thompson et al.
patent: 4344486 (1982-08-01), Parrish
patent: 4366864 (1983-01-01), Gibson et al.
patent: 4640352 (1987-02-01), Vanmeurs et al.
patent: 4744417 (1988-05-01), Alameddine
patent: 4886118 (1989-12-01), Van Meurs et al.
patent: 4926941 (1990-05-01), Glandt et al.

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