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.
一种用于提高石油采收率的组合物,包括约 1.5-20 重量百分比的黄单胞菌
生物聚合物和约 0.0008-3 重量百分比的亚甲基双(
硫氰酸盐),组合物的 pH 值高于约 3.5。此外,还公开了一种生产可直接注射的
生物聚合物溶液的新工艺,以及一种通过将稀释的组合物注入含油地下地层来回收原油的方法。