COMPOSITION AND METHOD OF HYDROCARBON FLUID EXTRACTION AT UNDERGROUND DEPOSIT

摘要

FIELD: oil and gas industry.SUBSTANCE: invention suggests a mixture of encapsulated polymer microparticles to change permeability coefficient of underground deposit that includes expandable polymer microparticles encapsulated into a shell of at least one layer of copolymer of N-isopropylacrylamide and acrylamide. Encapsulated microparticles have average diameter of increased volume from 0.05 up to 5000 mcm. The invention also offers method to change permeability coefficient of underground deposits using the above mixture.EFFECT: increasing mobility or production rate of hydrocarbon fluids in deposits.20 cl, 1 tbl, 11 ex