| 摘要 |
A method for elimination of behind casing leaks in wells includes geo-physical investigations, perforation of string and pumping in a sealing compound based on phosphatide concentrate. To increase the quality of sealing gas-flow channels, the critical area of formation and gas flow channels are first hydrophobizated with 0.5-2.0 % hydrocarbon solution of cation surfactant, and a composition that additionally contains cation surfactant and hydrocarbon solvent is used as a sealing compound based on phosphatide concentrate, at the following ratio: 65.0-95.0 wt. % of phosphatide concentrate, 0.1-1.5 wt. % of cation surfactant, 4.9-33.5 wt. % of hydrocarbon solvent. |
