The invention discloses a water shutoff agent for oil extraction, which is prepared by mixing epoxy resins, polyethylene ammonia, calciumlignosulphonate, calcium chloride and water.
本发明公开了一种采油用堵水剂,由环氧树脂、聚乙烯聚氨、木质素磺酸钙、氯化钙、水混合组成。
2
An excellent pumping admixture was made up by use of FDN compounded with calciumlignosulphonate, retarder for controlling slump loss and water retaining admixture for reducing water segregation rate.