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Application

97109665/04, 1997-06-10

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Actual filing date

1997-06-10

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Published

1998-07-10

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Inventor

Shtol' V.F.Sekhniashvili V.A.Kashkarov N.G.Verkhovskaja N.N.Ippolitov V.V.Sevodin N.M.Kirienko A.M.Davydov E.I.Turshiev A.P.

(73)

Holder

Tjumenskij Nauchno-Issledovatel'Skij I Proektnyj Institut Prirodnogo Gaza I Gazovykh Tekhnologij

SEALING LUBRICANT FOR THREADED CONNECTIONS Russian patent published in 1998 - IPC

Abstract RU 2114906 C1

FIELD: oil and gas wells. SUBSTANCE: invention, in particular, relates to threaded connections for drill and casing strings. Lubricant of invention is designed for oiling jacks of rock drill bits operating under high-temperature conditions complicated by inflow of mineralized water into borehole. Lubricant is based on mineral oil and contains 12-17 wt % of hydrolysis lignin and 38-48 wt % of tallow pitch. EFFECT: reduced accident rate of drill pipes. 2 tbl

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RU 2 114 906 C1

Authors

Shtol' V.F.

Sekhniashvili V.A.

Kashkarov N.G.

Verkhovskaja N.N.

Ippolitov V.V.

Sevodin N.M.

Kirienko A.M.

Davydov E.I.

Turshiev A.P.

Dates

1998-07-10—Published

1997-06-10—Filed

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