Oil recovery process

Details Oil recovery process Oil recovery process

1985-03-18

1986-09-23

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166274, 166275, 252 8554, E21B 4322

Patent

active

046129910

ABSTRACT:
A post-primary oil recovery process wherein the subterranean oil-bearing formation is treated by the sequential injection of (1) optional aqueous preflush to adjust connate water salinity, (2) aqueous saline surfactant system containing at least one acylated polypeptide salt surfactant, (3) optional thickened aqueous mobility buffer and (4) an aqueous drive, for the recovery of oil driven from the formation thereby.

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