CONTINUOUS-DUTY HYDRAULIC PIPING ELEVATOR Russian patent published in 1994 - IPC

Abstract RU 2019676 C1

FIELD: abandonment of wells. SUBSTANCE: base 4, whose spherical surface cooperates with bearing plate 7 mounted on it, is freely installed on deck 1. Mounted on bearing plate 7 are hydraulic actuating cylinders, which are jointed with deck 1 by spread-out tie rods. EFFECT: enhanced efficiency and reliability of piping elevator installation above well; reliable self-setting of piping elevator with alignment of axis of grabs of upper and lower cross-pieces with casing axis, eliminating appearance of lifting effort components that cause bending of casing. 3 dwg

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RU 2 019 676 C1

Authors

Stepanov V.М.

Кazakov А.G.

Semenov А.А.

Davydov А.S.

Кushchak Ju.S.

Zhuchkova N.G.

Dates

1994-09-15—Published

1991-01-02—Filed