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2 109 914

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C1

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IPC

(21) (22)

Application

95121664/03, 1995-12-20

(22)

Actual filing date

1995-12-20

(45)

Published

1998-04-27

(72)

Inventor

Chasovskikh A.I.Bondar' A.V.Gritsenko V.D.Minigulov R.M.Kisser A.I.Balashov V.A.Larionov A.V.

(73)

Holder

Voronezhskij Mekhanicheskij Zavod

DEVICE FOR CENTERING PRODUCTION STRINGS IN WELL HEAD EQUIPMENT Russian patent published in 1998 - IPC

Abstract RU 2109914 C1

FIELD: oil and gas production industry. SUBSTANCE: this relates to devices intended for centering pipe strings in bore-holes. This embodiment of device allows for achieving high-accurate coaxiality in mounting well head equipment and strings in bore-holes due to application of centralizers with movable centering members made in the form of plungers with wedge-shaped slot in end part at side of production string. Aforesaid plungers are provided with inner threaded joint with screws installed in housings which are turned in string head. Movable centering members which are located diametrically opposite interact by their flat end with indicator having its opposite end movably connected with metering scale. EFFECT: higher efficiency. 7 dwg

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RU 2 109 914 C1

Authors

Chasovskikh A.I.

Bondar' A.V.

Gritsenko V.D.

Minigulov R.M.

Kisser A.I.

Balashov V.A.

Larionov A.V.

Dates

1998-04-27—Published

1995-12-20—Filed

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