COMPOUND FOR ISOLATION OF WATER INFLOW IN WELL Russian patent published in 2012 - IPC C09K8/506 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to water-isolating compounds on the basis of organic-silicon compounds and can be used for isolation of water inflow to production wells and control of water-intake capacity of injection wells. Compound used for isolation of water inflow to the well contains still residues of phenyltrichlorosilane (PTCS) and organic-silicon compound - product 119-296. In addition, the above compound contains polyglycols at the following component ratio, vol %: organic-silicon product 119-296 70.0-76.5, still residues of PTCS 3.5-10.0, polyglycols 20.0, as well as Devonian brine water in the ratio of 0.5:1 to 1:1 with the water inflow isolation compound.

EFFECT: improvement of processing properties of the compound owing to simplifying its preparation method; improvement of isolating efficiency of the compound and reduction of its corrosion activity; increase in time between overhauls of the well operation.

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