COMPOSITION FOR INSULATION OF WATER INFLOW IN WELL Russian patent published in 2000 - IPC

Abstract RU 2157880 C1

FIELD: oil and gas production. SUBSTANCE: composition based on bentonite clay suspension is supplemented by electrolyte and hydrophobic filler and so contains, wt %: bentonite clay 0.1-75.0, hydrophobic filler 0.1-75.0, electrolyte 1.0-22.0, and hydrocarbon liquid - the balance. EFFECT: increased water-insulation capacity with no loss in permeability of bottom zone of oil formation within wide formation temperature range. 2 tbl

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RU 2 157 880 C1

Authors

Evstifeev S.V.

Kotel'Nikov V.A.

Dates

2000-10-20—Published

1999-03-10—Filed