METHOD FOR INJECTION WELL INFECTIVITY PROFILE ALIGNING AND WATER IN-FLOW LIMITATION FOR PRODUCTION WELL (VERSIONS)

摘要

FIELD: oil-and-gas industry.;SUBSTANCE: invention used for development of a oil field with nonuniform permeable water flooded stratums, for injection well infectivity profile aligning and water in-flow limitation in production well. In the injection well infectivity profile aligning and water in-flow limitation in production well method, which includes injection of a gelling composition - dispersion in water of polyacrylimide and acetate chrome, the mentioned above dispersion additionally contains zinc oxide at the following components ratio wt %: polyacrylimide 0.5-1.0, acetate chrome 0.03-0.1, zinc oxide 0.04-0.06; the rest is water, at that over flush the mentioned above composition in to the stratum in volume, providing the dispersion full displacement with water from a borehole in tubing string volume + 0.5-1 m³, execute a process ageing during gelling, duration 2-3-days. Optionally use dispersion, which contains wt %: polyacrylimide 0.5-1.0, guar 0.1-0.2, acetate chrome 0.04-0.1, magnesium oxide 0.02-0.05, the rest is water, at that over flush the mentioned above composition in to the stratum in volume, providing the dispersion full displacement with water from a borehole in tubing string volume + 0.5-1 m³, execute a process ageing during gelling, duration 2-3-days.;EFFECT: oil displacement from the stratum with gelling compositions efficiency increase and energy consumption decrease.;2 cl, 1 tbl, 1 ex