CABLE SUSPENSION OF WELLHEAD ROD Russian patent published in 2020 - IPC F04B47/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used in operation of sucker-rod well pumping units, in particular, as an element of wellhead drive of sucker rod pump. Cable suspension of wellhead rod includes top and bottom cross beams separated by hollow inserts. On upper crossbar there is a body in the form of an inverted cup covering the wellhead with a resilient element inside, and the lower one is made with possibility of connection to the wellhead drive ropes by means of hollow inserts. Wedge clamp of the wellhead is installed on top of the housing. Bearing bushing is installed at the bottom of the resilient element and interacts with the top of the upper crossarm and covers the wellhead. Elastic element is made in the form of compression spring, made with possibility of wellhead coverage. Bearing bushing is made in the form of a cup open from above. Body and thrust bushing are inserted one into another coaxially with possibility of limited longitudinal movement towards each other. Housing is assembled, consisting of wall and cover, made with possibility of controlled longitudinal movement relative to wall with fixation in selected position to provide required preliminary compression of spring.

EFFECT: increased reliability and durability due to use of compression spring as resilient element with control of initial force.

1 cl, 2 dwg