FIELD: oil and gas industry.
SUBSTANCE: invention suggests a mixture of expandable polymer microparticles in order to change water permeability coefficient in underground deposit that contains interpenetrating polymer networks (IPN) including one or more acrylamide copolymer. IPN limits a microparticle up to medium size of non-increased volume from approximately 0.05 up to 5000 mcm. Labile cross-linking in IPN polymers are subjected to destruction thus leading to release of an expandable microparticle so that it gets expanded. 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, 2 dwg, 1 tbl, 14 ex
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