The electric submersible PCP lifting system is a high-efficiency rodless downhole oil production equipment. Adopting permanent magnet synchronous motor direct drive technology, it eliminates the reduction mechanism, featuring a compact structure, high torque, low energy consumption, and stable and reliable operation.
The downhole PCP forms sealed chambers through the meshing of rotors and stators, and lifts fluids steadily based on the positive displacement principle. Combined with an intelligent variable frequency control system, it can adjust the rotating speed in real time and realize overload/underload protection as well as adaptive regulation of working conditions.
Free from rod and tubing wear, the system is suitable for heavy oil wells, high sand content wells and high gas-liquid ratio wells. It is especially applicable to complex working conditions such as horizontal wells, highly deviated wells, and coalbed methane water drainage and gas production. It integrates the advantages of energy saving, long service life and strong adaptability.
The electric submersible PCP lifting system is a high-efficiency rodless oil production equipment designed for complex well conditions. It integrates permanent magnet drive, PCP and intelligent control technologies, featuring compact structure and reliable operation. It exhibits outstanding performance in sand carrying, wear resistance, energy saving and intelligent regulation under complex working conditions such as heavy oil and deviated wells.
The downhole permanent magnet synchronous motor is directly connected to the PCP, without intermediate transmission components such as reducers and sucker rods. It features a compact structure, high transmission efficiency and reliable performance.
Adopting the single-screw positive displacement working principle, the rotor and stator mesh to form sealed chambers, enabling stable fluid lifting. It inherits the inherent advantages of PCPs in sand carrying, gas lock prevention, and adaptability to heavy oil media.
Equipped with dedicated protectors and high-temperature and high-pressure resistant cables, it can balance internal and external pressure and isolate the intrusion of well fluid, adapting to downhole environments with high temperature, high pressure and complex media.
Integrated downhole overall design completely eliminates eccentric wear, breakage and detachment of rods and tubes, making it especially suitable for special well types such as horizontal wells and highly deviated wells.
It is equipped with built-in working condition monitoring, which can realize constant liquid production volume and constant dynamic liquid level production of oil wells, and can intelligently judge downhole faults. The surface equipment is simple in structure, small in floor area and low in noise, which is suitable for cluster wells, urban wells and other scenarios that have strict requirements on noise and space.
The downhole integrated rodless structure completely avoids the faults of rod-tube eccentric wear and breakage, has a long pump inspection cycle, and is especially suitable for horizontal wells and high-inclination wells.
Adopting a permanent magnet motor to directly drive the PCP, it has no sucker rods or reduction mechanisms, resulting in low transmission loss. Its operating efficiency is significantly higher than that of conventional oil production equipment, with remarkable energy-saving effects.
Relying on its positive displacement lifting characteristic, the PCP features good sand carrying capacity, gas lock prevention and low pump sticking risk, delivering excellent adaptability to complex well fluids such as heavy oil, waxy crude and high-sand-content crude.
Equipped with supporting intelligent frequency conversion regulation, it enables real-time speed adjustment and early warning protection. The surface equipment is simple and compact, covers a small floor area and operates noiselessly, making it suitable for cluster wells, urban well sites and other application scenarios.
Adopting the positive displacement lifting principle of PCP, it is sand-resistant, gas-lock resistant and heavy-oil tolerant. It can stably deliver well fluids with high sand content, high viscosity and high gas-liquid ratio, covering a wider range of working conditions.
The permanent magnet motor adopts direct drive with no intermediate loss, eliminating the problem of sucker rod eccentric wear. It features high operating efficiency, low failure rate, and is more energy-saving and stable for long-term use.
Supporting variable-frequency intelligent control enables on-demand displacement adjustment and real-time monitoring & protection, realizing production as required and improving the operational safety and economy of the system.
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