COMPOSITION FOR ISOLATION OF WATERED RESERVOIR INTERVALS AND ELIMINATION OF LEAKS IN PRODUCTION STRINGS Russian patent published in 2022 - IPC E21B33/138 C09K8/508 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry, in particular to compositions for limiting water inflows in producing wells. The composition contains a binder - 5-90 vol.% alkyl ether of an organosilicon compound, hardeners - 0.25-4.5 vol.% cationic and 0.25-4.5 vol.% non-ionic surfactants, time regulator gelling - water phase, the rest. In this case, alkylbenzyldimethylammonium chloride is used as a cationic surfactant, and C8-C14 alkylpolyglucoside is used as a nonionic surfactant. Wherein the ratio of these surfactants in the composition is 1:1, and the content of each of these surfactants from the specified alkyl ether of the organosilicon compound is 5%.

EFFECT: improving the insulating properties of the composition by increasing the penetrating power and the ability to control the gelation time of the composition while maintaining high structural and mechanical properties.

2 cl, 2 tbl, 2 ex