METHOD FOR ISOLATION OF WATER PRODUCTION TO PRODUCING OIL WELLS Russian patent published in 2010 - IPC E21B33/138 C09K8/508 

Abstract RU 2396419 C1

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil industry, particularly to a method for isolation of water production to production wells. In the method for isolation of water production to the producing oil wells, including injection of a gelling compound prepared by mixing polyacrylamide, carbamide, aluminium salt and water, said aluminium salt is solid aluminium pentahydroxychloride S-APHC containing low-molecular electrolyte - magnesium chloride, and when mixing, APHC and carbamide in the ratio 1:0.5 to 1:4 are mixed with 0.3% aqueous polyacrylamide - PAA taken in amount 0.35-0.5 wt %.

EFFECT: higher nonuniform reservoir recovery.

3 ex, 3 tbl, 2 dwg

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RU 2 396 419 C1

Authors

Radchenko Stanislav Sergeevich

Novakov Ivan Aleksandrovich

Radchenko Filipp Stanislavovich

Zel'Tser Pavel Semenovich

Rybakova Elena Vladimirovna

Dates

2010-08-10Published

2009-07-27Filed