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Application

98107228/03, 1998-04-15

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Start date

1998-04-15

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Actual filing date

1998-04-15

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Published

1999-12-20

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Inventor

Andreson B.A.Ostrjagin A.I.Bochkarev G.P.Rekin A.S.Ljubimov V.S.Vakhrushev L.P.Pen'Kov A.I.

(73)

Holder

Andreson Boris Arnol'DovichOstrjagin Anatolij Ivanovich

LUBRICATING COMPOSITION OF WATER-BASED DRILLING MUD Russian patent published in 1999 - IPC

Abstract RU 2142978 C1

FIELD: drilling of oil and gas wells. SUBSTANCE: lubricating composition comprises light thall oil and modifying polyglycol additive, ratios of ingredients being as follows, wt %: light thall oil, 40-60 and polyglycol, 40-60. EFFECT: improved lubricating and antiwear properties due to higher strength and greater adhesion of lubricating film to metal surface, and better stabilizing properties of mud and effect thereof on initial permeability recovery coefficient. 1 ex, 2 tbl

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RU 2 142 978 C1

Authors

Andreson B.A.

Ostrjagin A.I.

Bochkarev G.P.

Rekin A.S.

Ljubimov V.S.

Vakhrushev L.P.

Pen'Kov A.I.

Dates

1999-12-20—Published

1998-04-15—Filed

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