A composition for use in enhanced oil recovery.Process for producing a solution of biopolimero of Xanthomonas and process for recovery of crude oil from an underground formation containing oil

摘要

A composition for use in enhanced oil recovery comprising from about 1.5-20 weight percent Xanthomonas biopolymer and from about 0.0008-3 weight percent methylene bis (thiocyanate), the composition having a pH above about 3.5. Also disclosed is a novel process for production of directly injectable biopolymer solution and a method for the recovery of crude oil from an oil-bearing subterranean formation by injecting the diluted composition into the formation.