DRILLING RIG Russian patent published in 2014 - IPC E21B7/02 E21B15/00 E21B19/86 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to drilling rigs and may be used for drilling wells for the purpose of seismic exploration, geological engineering survey, construction, etc. The drilling rig contains a mast with a bracket for its hinged fastening coupled to the mast by guiding elements, a carriage with a rotator placed on it, the means for mast rising and lowering, a mechanism in the form of a hydraulic cylinder for the carriage transfer to the bottom hole, the body of the above hydraulic cylinder is fixed rigidly to the mast while a piston is oriented upwards and rigidly connected to the carriage by a long load-bearing element covering the cylinder from outside. The long load-bearing element connecting the hydraulic cylinder piston with carriage is made as a tubular rod. At the upper end of the mast there are elements guiding this rod and coupled to its surface thus enabling translatory movement.

EFFECT: improving resistance of the above load-bearing element and hydraulic cylinder piston to lateral deflection as well as reducing wear and tear of its friction couples.

12 cl, 12 dwg