FOAMING COMPOSITION FOR REPAIR WORKS IN THE HOLE Russian patent published in 1995 - IPC

Abstract RU 2033417 C1

FIELD: oil and gas industry. SUBSTANCE: method involves dissolving of bentonite (2-3 wt.-%) in water for swelling. Then the following compounds were added at stirring, wt.-%: alkylsulfates triethylamine salt 3-4; 16% hypan solution ρ=1080 kg/m³, and aluminium hydroxide 0.2-0.4. Formed mixture is brought about to 100 wt.-% by water addition. EFFECT: enhanced stability of composition to liquid hydrocarbon effect.

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RU 2 033 417 C1

Authors

Kovalev A.A.

Kallaeva R.N.

Tagirov O.K.

Nifantov V.I.

Dates

1995-04-20—Published

1992-08-18—Filed