DEVICE FOR SCREWING OR UNSCREWING THREADED CONNECTION OF WELLHEAD COMPONENTS OF HIGH-VISCOSITY OIL WELL Russian patent published in 2021 - IPC E21B19/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas equipment, namely to devices for screwing or unscrewing threaded connection of wellhead elements of high-viscosity oil well on ultraviscous oil well with inclined wellhead. Device includes a circular wrench with detachable external toothed rim in form of two sectors rigidly fixed on the surface of the screwed part of the fixture, and gear, made with possibility of interaction with toothed ring rim and put on shaft, with possibility of rotation by means of drive. Outer part of toothed rim is made in form of toothed rim, kinematically connected with gear, and fixed by screw clamps. Drive is made in form of geared motor, rigidly connected with fixed part of wellhead equipment by means of clamp, covering wellhead from outside on perimeter, and connected with motor-reducer through subframe made of two metal plates connected by screw clamps, providing kinematic connection of gear with toothed rim. Output shaft of geared motor is rigidly connected with pinion axis. Inner surface of yoke and toothed rim is provided with notches in form of teeth providing locking and fixation on cylindrical surfaces of reinforcement.

EFFECT: technical result is higher efficiency of using device for screwing or unscrewing threaded connections of wellhead accessories on well with inclined mouth, providing high torque, higher safety of device.

1 cl, 1 dwg