FIELD: oil and gas industry.
SUBSTANCE: method for limiting water influx in well involves subsequent pumping to isolated interval of invert emulsion on the basis of water disperse phase and hydrocarbon disperse medium with organic silicone backfill compound and fixing agent on the basis of organic silicone backfill compound in higher concentration. Before invert emulsion to isolated interval there pumped is water suspension of clay to increase viscosity and stability of emulsion, as organic silicone backfill compound there used is Silor NCh; at that, for invert emulsion in quantity of 1-10% of volume of hydrocarbon dispersion medium, and for fixing agent - with addition of 10% water solution of sodium hydroxide at the following ratios of components, vol. %: organic silicone backfill compound "Silor NCh" 80-90; 10% water solution of sodium hydroxide 20-10.
EFFECT: increasing efficiency of insulating works, duration of effect, increasing overhaul period of operation, excluding metal corrosion of tubing string and production casing.
2 tbl, 1 ex
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Authors
Dates
2011-05-10—Published
2010-01-11—Filed