HYDROCARBON-BASED DRILLING FLUID Russian patent published in 2005 - IPC

Abstract RU 2263701 C2

FIELD: oil and gas production.

SUBSTANCE: invention provides environmentally safe hydrocarbon-based drilling fluid suitable for use during boring and completion of oil and gas wells. Drilling fluid is characterized by required viscosity and structural properties within a wide water content range and, in particular, contains, wt %: castor oil 50.0-83.0, colophony calcium resinate (thickener) 4.0, calcium chloride 10.0, Neonol AF-9/12 (emulsifier) 0-0.3, organophilic bentonite 2.0-3.0, water 0-30.0, and penosoline (waterproofing agent) 0-20.

EFFECT: improved environmental condition.

2 cl, 2 tbl

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RU 2 263 701 C2

Authors

Fedosov R.I.

Koshelev V.N.

Tatarinov A.V.

Korneva E.I.

Dates

2005-11-10—Published

2003-12-30—Filed