DEVICE FOR REPAIRING CASING STRING IN WELL Russian patent published in 1994 - IPC

Abstract RU 2010945 C1

FIELD: well operation. SUBSTANCE: device has a bearing unit rigidly connected to a rod and positioned over a coupling in the cavity of a lower power cylinder of a hydraulic jack for engagement of the outer surface of the bearing unit with the inner surface of the lower power cylinder. The bearing unit is made in the form of a body with casings in which bodies of revolution are located. EFFECT: improved reliability. 2 cl, 7 dwg

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RU 2 010 945 C1

Authors

Ivanov Al'Bert Vasil'Evich

Dates

1994-04-15—Published

1992-02-03—Filed