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2 012 586

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Application

5046786/03, 1992-04-22

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Actual filing date

1992-04-22

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Published

1994-05-15

(72)

Inventor

Kashkarov N.G.Verkhovskaja N.N.Bragina L.V.Svechnikov A.M.Novikov V.I.Vjakhirev V.I.

(73)

Holder

Gosudarstvennoe Nauchno-Proizvodstvennoe Predprijatie

DRILLING FLUID Russian patent published in 1994 - IPC

Abstract RU 2012586 C1

FIELD: hole drilling. SUBSTANCE: drilling fluid has the following components, wt. -% : clay 19-20; hydrolyzed polyacrylonitrile (mol. mass is 3.5 x 3,5×107) 0.4-0.5; sodium tripolyphosphate 1.5-2.5, and water - the rest. EFFECT: enhanced quality of drilling fluid.

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RU 2 012 586 C1

Authors

Kashkarov N.G.

Verkhovskaja N.N.

Bragina L.V.

Svechnikov A.M.

Novikov V.I.

Vjakhirev V.I.

Dates

1994-05-15—Published

1992-04-22—Filed

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