FIELD: oil and gas industry.
SUBSTANCE: beamless drive contains the lifting module, which is designed to be mounted on the wellhead equipment and consists of three pipes connected by the brace. The traction rope passes through the upper and lower pulley, connected from one side through the rod rotor with the polished rod, and from the other hand - with one crank arm. At least one counterweight is mounted on the other crank arm. The traction rope is routed from the lifting module upto the crank through at least one thrust pipe.
EFFECT: simplification of the design, reduction of metal consumption, elimination of the foundation need, simplification of installation and maintenance, reduction of the operational labor.
2 cl, 5 dwg
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