FIELD: oil and gas production.
SUBSTANCE: method of restricting water production into oil producing well consists in lowering flow string up to insulated interval and in successive pumping of process solutions and water-cement solution. Oil-cement solution is preliminary pumped; further there is pumped a composition for flushing oil film from porous channels at bottomhole zone of the bed and for curing oil-cement solution; oil-cement solution corresponds to 0.05-0.2 % water solution of non-ionogenic surface active substance AF9-12; also pumping of composition for oil film flushing and curing of oil-cement solution are commenced upon pressure rise at 20-25% from primary at pumping oil-cement solution.
EFFECT: raised efficiency of repair-insulating operations in well.
2 tbl, 1 ex
| Title | Year | Author | Number |
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|
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