PLANT FOR PULLING-AND-RUNNING OPERATIONS IN WELLS WITH INCLINED WELLHEAD Russian patent published in 2018 - IPC E21B15/04 E21B19/20 

FIELD: oil and gas industry.

SUBSTANCE: plant includes mobile chassis with a frame, on which one or several hydraulic jacks of one mast end equipped with rotary lever and made for guiding pipes into the inclined wellhead, a mast post for mechanical locking of the mast at an angle, a traveling mechanism with a crown block and a block for lifting the pipes on the mast, a pulling winch for lifting pipes along mast from the well, a support beam assembly of the mast screw jack for orienting the mast relative to the wellhead, support ramps of the plant at the well under the chassis and jacks connected to frame and configured to support on the ramp and lifting on the frame from chassis with fixation in working position. The frame is in the form of an assembly consisting of fixed and movable parts relative to the chassis. Movable part of the frame on which the mast base and hydraulic jacks are mounted is mounted on the fixed frame for limited longitudinal movement by means of jacks connecting parts of the frame. The fixed part of the frame is connected with the rear and the front jacks through a telescopic beam for limited transverse movement by means of side jacks which connect the telescopic beam and the fixed part of the frame. The mast for powered lowering of the pipe string into the well is additionally equipped with one or several winches, which lower support is located on the fixed part of the frame, and the free end is equipped with a mechanism for catching the upper end of the pipe string lowered into the well. Each jack is a combination of hydraulic and mechanical hoist for fixing the fixed part of the frame at a required height relative to the supporting ramps.

EFFECT: increased efficiency of the plant.

3 dwg