Oil recovery composition

Compositions – Leather or fur treating

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166273, 252354, 252356, E21B 4322

Patent

active

047326905

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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