SUCKER ROD PUMP TURNING DEVICE Russian patent published in 2019 - IPC F04B47/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oilfield equipment and can be used in operating in inclined and horizontal wells sucker rod pumps. Sucker rod pump rotary device includes a mechanism for the working cylinder and the hollow plunger joint rotation relative to the pump housing by means of connected to the rods one-piece stem, which outer surface is made with two longitudinally straight grooves and two guide pins in them, which are fixed inside the sliding bushing. From the outer side the bushing is rigidly articulated with the upper anchor. Hollow stem is the solid stem continuation and is made with longitudinal-helical grooves by the guide pin engaged with auxiliary cylinder, in which the hollow stem is located. Auxiliary cylinder is equipped with support slide bearings relative to the pump housing, and is rigidly articulated with the working cylinder, inside which a hollow plunger is placed, articulated with the hollow stem using the coaxial hinge with possibility of its independent rotation relative the hollow stem. At the working cylinder end face, a closed ball bearing is rigidly mounted, which cage is rigidly seated in the lower anchor body seat. By the free end, the lower anchor body is seated in the self-aligning suction valve centralizer sealing seat. Pump housing bottom is seated in the pump casing sealed gripping mechanism.

EFFECT: rotary device enables the cylinder and the plunger surfaces uniform wear, significantly improves the durability and the overhaul period of the sucker rod pump operation in inclined and horizontal wells.

1 cl, 2 dwg