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2 087 516

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C1

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IPC

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Application

95104052/03, 1995-03-21

(22)

Actual filing date

1995-03-21

(45)

Published

1997-08-20

(72)

Inventor

Kashkarov N.G.Bragina L.V.Verkhovskaja N.N.Grosheva T.A.Jushkov Ju.S.

(73)

Holder

Tjumenskij Nauchno-Issledovatel'Skij I Proektnyj Institut Prirodnykh Gazov I Gazovykh Tekhnologij

DRILLING FLUID Russian patent published in 1997 - IPC

Abstract RU 2087516 C1

FIELD: oil and gas production. SUBSTANCE: drilling fluid for horizontal bore holes contains (in wt %): chalk, 9; short- fiber asbestos, 1.0-1.5; mixture of saturated and unsaturated fatty alcohols, 1.0-1.5; polyethylene oxide with molecular weight 3.0-3.6 x 106, 0.4-0.5; hydrolyzed polyacrylonitrile with molecular weight 3.5 x 107, 03-0.5; water, the balance. EFFECT: modified composition for special cases. 2 tbl

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RU 2 087 516 C1

Authors

Kashkarov N.G.

Bragina L.V.

Verkhovskaja N.N.

Grosheva T.A.

Jushkov Ju.S.

Dates

1997-08-20—Published

1995-03-21—Filed

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