Hot water, surfactant, and polymer flooding process for heavy oi

Details Hot water, surfactant, and polymer flooding process for heavy oi Hot water, surfactant, and polymer flooding process for heavy oi

1990-06-18

1992-01-28

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 252 8554, E21B 4322, E21B 4324

Patent

active

050836129

ABSTRACT:
Injection of steam or other thermal fluid for recovery of heavy crude oil is accompanied by or followed by injection in the same well of a solution of petrochemical sulfonate and a co-surfactant, the co-surfactant being either an olefin sulfonate or a propane sulfonate of an ethoxylated alcohol or alkyl phenol. The surfactant mixture is followed by injection in the same well of a water-soluble polymer solution and additional oil is recovered from production wells.

REFERENCES:
patent: 3802508 (1974-04-01), Kelly et al.
patent: 4088189 (1978-05-01), Shupe
patent: 4175618 (1979-11-01), Wu et al.
patent: 4412926 (1983-11-01), Nieh et al.
patent: 4643256 (1987-02-01), Dilgren et al.
patent: 4646833 (1987-03-01), De Ruiter
patent: 4820429 (1989-04-01), Lim

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