DEVICE FOR RESTORING HERMETIC SEALING OF THREADED COUPLING OF PRODUCTIVE STRING IN WELL Russian patent published in 1998 - IPC

Abstract RU 2104388 C1

FIELD: oil and gas production industry. SUBSTANCE: device has packer with fixing unit for closing of annular space above and below threaded coupling. Also provided are chamber with sealing compound secured for possible displacement on rods in lift string of pipes, drive unit, control unit, packer drive unit. For hermetic sealing of threaded coupling, effected is hydraulic connection of chamber containing hermetic compound with space between sealing members. EFFECT: higher efficiency. 5 dwg

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RU 2 104 388 C1

Authors

Akopov S.A.

Girinskij V.A.

Korshunov V.N.

Mashkov V.A.

Dates

1998-02-10—Published

1995-07-31—Filed