METHOD FOR LIMITING INFLUX OF WATER INTO PRODUCTION WELL Russian patent published in 2010 - IPC E21B33/138 E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular - to methods for limitation of water during repair of production wells. Under the method for limitation of water to production wells envisages installation of a packer with a pipe column communicating with the sub-packer space, into the perforation interval over the drowned part of the stratum, simultaneous pumping of a cementation compound containing sodium silicate by way of the basic component, along the pipe column into the sub-packer space and the drowned part of the stratum and liquid along the hole annuity into the behind-the-packer space and into the stratum productive part, liquid acting as accelerator of consolidation of cementation compound represented by a water solution of salts containing at least 10 g/l of calcium and 0.1-0.2 % of surfactants, pumped along the hole annuity, the flow rate being 1-2 l/sec, while the cementation liquid is pumped at a flow rate exceeding that of the water salt solution by a factor of 3-5.

EFFECT: improved efficiency of limitation of influx of water to the production well without detriment to the collector properties of the stratum productive part.

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