Secondary oil recovery process using oxyalkylated additives

摘要

A process for the recovery of hydrocarbon materials from a subterranean hydrocarbon-bearing formation by contacting the formation with an aqueous alkaline flooding medium containing a solubilizing agent. Useful solubilizing agents include for example, block-type compounds of the formula: wherein n is an integer of from 1 to about 10 and m is an integer of about 5 to about 40.