Recovery of viscous oil from asphaltic oil-containing formations

Details Recovery of viscous oil from asphaltic oil-containing formations Recovery of viscous oil from asphaltic oil-containing formations

1982-11-29

1984-09-04

Novosad, Stephen J.

Wells

Processes

In situ combustion

166272, 166274, E21B 4324, E21B 4327

Patent

active

044691777

ABSTRACT:
This specification discloses a method for the recovery of oil from a subterranean, viscous asphaltic oil-containing formation comprising injecting a predetermined amount of a solution comprising an aromatic hydrocarbon and an acid selected from the group consisting of phenol, carboxylic acid, and acidic anhydrite. Thereafter, the formation is subjected to a thermal recovery technique such as steam flooding or an in-situ combustion operation and oil is recovered.

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