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2 162 874

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IPC

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Application

99108177/03, 1999-04-07

(24)

Start date

1999-04-07

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Actual filing date

1999-04-07

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Published

2001-02-10

(72)

Inventor

Andreson B.A.Bochkarev G.P.Ramazanov G.S.Giljazov R.M.

(73)

Holder

Aktsionernaja Neftjanaja Kompanija Bashneft'

DRILLING MUD Russian patent published in 2001 - IPC

Abstract RU 2162874 C2

FIELD: drilling fluids. SUBSTANCE: waterless drilling mud contains, wt. %: high-oxidized bitumen, 5-8; synthetic fatty acid -fraction, 0.5-1.5; alkali, 0.05-0.15; hydrophilic urethane prepolymer, 2-6; and diesel fuel, the balance. EFFECT: improved viscosity and structural- mechanical properties of drilling mud preserving its process parameters when in contact with water. 3 tbl, 3 ex

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RU 2 162 874 C2

Authors

Andreson B.A.

Bochkarev G.P.

Ramazanov G.S.

Giljazov R.M.

Dates

2001-02-10—Published

1999-04-07—Filed

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