This system is a highly efficient and reliable mechanical artificial lift solution, widely utilized in petroleum, natural gas, and geothermal energy development. The complete assembly primarily comprises the surface drive unit, wellhead equipment, sucker rod string, downhole progressive cavity pump (PCP), and matching tubing string. The surface drive unit supplies rotational power and transmits torque to the downhole pump via the sucker rod string, facilitating the continuous lifting of well fluids.
The system is highly capable of handling fluids across a wide viscosity range, including heavy crude oil and polymer solutions. It exhibits exceptional tolerance for sand-bearing and gas-laden environments. Its robust structure effectively buffers abrasive sand impacts, while the unique screw propulsion design facilitates automatic gas venting to prevent gas locking, thereby ensuring continuous and reliable operation under complex working conditions.
The system achieves smooth fluid lifting through continuous rotary transmission, effectively eliminating the pressure shock and flow fluctuations associated with traditional reciprocating pumps. Its stroke-free operation minimizes mechanical inertia impacts, significantly reducing fatigue damage to sucker rods, downhole pumps, and other components, thereby extending overall service life.
Featuring a flexible sucker rod string and modular downhole pump design, the system adapts seamlessly to diverse well trajectories, including vertical, deviated, and horizontal wells. Pump setting depth can be precisely optimized by adjusting the tubing running depth to meet specific operational requirements.
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