FIELD: oil and gas industry.
SUBSTANCE: invention refers to construction of oil, gas and survey wells, particularly to process fluids for their casing. Isolating compound contains, wt %: potassium acetate 5-30; marble aggregate of 0.1-0.2 mm grade 5-45; Poly Kem D 0.3-0.5; ferrochromlignosulphonate 0.2-0.5, water - the rest.
EFFECT: upgraded quality of casing of oil and gas wells, increased efficiency of isolation of oil-water bearing and kicking reservoirs, facilitation of reliable control over reservoir isolation via annular space, and increased overhaul period of well casing and operational life of wells in general.
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