| 摘要 |
oil producing industry; applicable in regulation of oil field development, equalization of injectivity profiles of injection wells and shutoff of formation waters inflows to oil wells. SUBSTANCE: composition contains the following ratio of components, mas.%: oil product, 90.0-99.9; dispersed filler, 0.1-10.0. Oil products are used with viscosity of 15-100 MPa.s, and dispersed filler, in the form of hydrolyzed lignin, wood flour or bentonite clay. Oil product is used as liquid carrier for injection of dispersed filler into formation and for prevention of its premature swelling in water. Composition features high viscosity and filtering of particles of dispersed filler that provides for efficient reduction of permeability of water-washed intervals and redistribution of filtration flows near well and in formation space. EFFECT: equalized injectivity profile of injection wells, increased coverage of formation by waterflooding, provided shutoff of formation water inflows to oil wells. 2 cl
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