Study of Selective Water Plugging Technology
Xie Shuixiang Li Kehua Yuan Quan Zhu Zhongxi (Department of Chemical Engineering, Jianghan Petroleum Institute,Ji ngzhou 434023)
Water plugging technologies used in oil wells were di vided into physical and chemical methods. The latter methods were divided into s elective ones and nonselective ones. Selective water plugging agents consisted o f water-based, alcohol-based, and oil-based agent according to the solvents used .