FIELD: oil industry, particularly to isolate bottom water in producing well.
SUBSTANCE: method involves arranging bottom of production string in center of interval to be treated; injecting thickened water and oil in hole annuity of the well by circulating thereof; forcing cement grout in production string until bottom thereof; injecting oil into formation through hole annuity and simultaneously injecting cement grout into formation through production string. Rate of above injection operations are equal and set so that liquids are injected at laminar flow regime.
EFFECT: increased reliability of bottom water isolation.
2 cl, 1 ex
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