METHOD FOR RESTRICTING THE WATER SUPPLY TO THE OIL-WELLING WELL THAT IS EQUIPPED WITH THE DEPTH INSERTED BY THE ROD WELL PUMP Russian patent published in 2018 - IPC E21B33/138 E21B43/32 C09K8/487 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and can be used for reduction of intensity of water inflow into a well. Method involves pumping insulating composition without lifting the pumping equipment and lowering the tubing. To pump the insulation composition, the sealing stem from the balancer head is disconnected. Crane pump is lifted by the hydraulic crane until it is removed from the pad device of the tubing string. Stems are fastened in the casing head stuffing box. Piping of the borehole armature and the oil pipeline are dismantled. Elevator column is connected to the discharge line of the pump unit. Insulating composition is pumped into the insulated formation through the gap between the tubing string column and the stem, and in the lower part of the well through the annular gap between the tubing string and the external surface of the insertion pump. Insulation composition is prepared on the basis of one or more of the following reagents: hydrolyzable polyfunctional organosilicon compounds, polyacrylamide, carboxymethylcellulose, hydrolyzed polyacrylonitrile, unifloc, liquid glass, siliceous, polyaluminium chloride, alumino chloride, chromium acetate, chromium alum, dichromate sodium, ethyl acetate, acid hydrochloric inhibited, aqueous solution of calcium chloride. Insulating composition contains finely divided fillers such as water-swelling polymers, rubber chips, clay powder, synthetic or mineral fiber, wood flour. Then, the insulation composition is pushed into the insulated interval, the processing is delayed to structure the insulation composition and the well is put into operation.

EFFECT: technical effect: method simplification and increase in its economic efficiency.

1 cl, 1 ex, 1 tbl