EMULSION FORMULATION FOR WATER SUPPRESSION, CONFORMANCE CONTROL AND WELL KILLING Russian patent published in 2015 - IPC C09K8/42 C09K8/506 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the oil and gas production, namely to formulations for water suppression, conformance control and oil and gas producing well killing. The emulsion formulation for water suppression, conformance control and well killing, containing hydrocarbon and water phases, an emulsifier containing a reaction product of fatty acids and amines as an active substance, non-ionic surfactants as an additive, and alcohol as a solvent, wherein the emulsifier contains the reaction product of the fatty acid R-COOH, wherein R=C₅-C₂₀, with amine R-N-(R'-NH₂)_n, wherein R=C₄-C₂₂, R'=C₂-C₄, n=0-2 as the active substance, in the following proportions of the emulsifier, wt %: above reaction product 2-80, non-ionic surfactant 2-60, alcohol - the rest, while the formulation contains the following proportions of the ingredients, wt %: hydrocarbon phase 2-25, emulsifier 0.1-5.0, water phase - the rest. The invention has been developed in the dependent claims.

EFFECT: higher stability, including thermal stability at 20-80°C, mechanical stability, lower corrosive activity, improved regulation of the emulsion rheology.

5 cl, 1 tbl, 5 ex