TREATMENT FLUIDS, CONTAINING LOW EMULSIONIZING SURFACE-ACTIVE AGENTS, AND RELATED METHODS Russian patent published in 2017 - IPC E21B43/27 E21B43/26 C09K8/584 C09K8/72 

FIELD: mining.

SUBSTANCE: treatment method of ground formation, including fluid for processing provision, containing low emulsionizing surface-active substance - LESAS, fluid of aqueous base and acid, the introduction of the mentioned fluid into at least to the part of the ground formation, providing the possibility to interact of at least a part of the fluid with at least a part of the ground formation in order to form one or more hollows in the ground formation, and further formation in the ground formation of one or more short-lived emulsions of "oil in acid" type. The treatment method of ground formation, including fluid for processing provision, containing LESAS, fluid of aqueous base, and the introduction of the mentioned fluid into at least to the part of the ground formation under the pressure or high pressure sufficient for generation or increasing one or more cracks in the ground formation, providing the possibility to interact of at least a part of the fluid with at least a part of the ground formation in order to form one or more hollows in the ground formation, and further formation in the ground formation of one or more short-lived emulsions of "oil in acid" type. The fluid for treating the ground formation, containing LESAS, selected from the group, consisting of: ethoxylated long chain alcohols, polyglucosides, alkylammonium bromides; alkylsulfonates; alkoxylated sulfates; hydroxysultaines, and any combination thereof, the aqueous base fluid and acid, wherein the mentioned LESAS present in an amount sufficient to form the short-lived emulsions of "oil in water" type in the ground formation. The invention is developed in the formula dependent claims.

EFFECT: increase of well productivity.

18 cl, 4 dwg, 1 tbl, 2 ex