English
The Electrical Submersible Pump is a downhole artificial lift system designed for continuous crude oil production in deep wells, offshore platforms and complex reservoir conditions. It integrates a high-performance submersible motor, multi-stage centrifugal pump, gas and sand resistant protection system, and reliable sealing structure to provide stable oil lifting performance.
Designed for high water-cut wells, mature oilfields, offshore production and challenging reservoir environments, the oil ESP system helps operators improve production efficiency, reduce workover frequency and lower long-term operating costs.
With multiple pump diameters, power configurations and material options available, it can be customized according to well depth, fluid characteristics, temperature and production requirements.
| No. | Equipment Name | Necessity | Procurement Method | Equipment Description |
| land-based facilities | ||||
| 1 | Junction Box | Optional | Customer-supplied |
1.For underground cable connections in ground cable wells 2.Preventing high-pressure gas in underground mines |
| 2 | Variable Frequency Step-up Transformer | Required | Customer-supplied | Used to boost the power supply voltage to the ground voltage required by the electric pump |
| 3 | Low-voltage Variable Frequency Control Cabinet (Including Sine Filter) | Required | Customer-supplied | For controlling, protecting, and adjusting the operating status of the electric pump |
| 4 | Filter | Optional | Customer-supplied | For protecting electric pumps and critical equipment in power grids |
| 5 | Surface Cable | Optional | Customer-supplied |
1.Used to connect ground equipment 2.control pump cost |
| downhole tubing string connector | ||||
| 1 | well head equipment | Required | Customer-supplied | 1.For hanging tubing strings and connecting surface pipelines2.For underground cable passage |
| 2 | oil pipe | Required | Customer-supplied | Used to connect electric pumps and form a well fluid lifting channel |
| 3 | drain valve | Optional | Customer-supplied | The discharge of tubing well fluid for pumping |
| 4 | Single flow valve | Required | Customer-supplied | The pump shutdown function prevents back flow of well fluid in the tubing string, which could cause water hammer and damage the electric pump. |
| 5 | outlet connection | Required | Customer-supplied | Used to connect the electric pump to the oil pipe |
| 6 | pump | Required | self-expropriation | Used to generate the required lifting pressure and flow rate |
| 7 | gas processor | Optional | self-expropriation |
1.To reduce the impact of gas on electric pumps, such as gas lock and cavitation 2.sufficient lift flow |
| 8 | Gas separator or inlet section | Required | self-expropriation |
1.To reduce the impact of gas on electric pumps, such as gas lock and cavitation 2.sufficient lift flow 3.forms the channel for well fluid to enter the pump |
| number | device name | necessity | acquisition method | Device Description |
| downhole tubing string connector | ||||
| 9 | protector | Required | self-expropriation |
1.Used to transmit motor torque to the pump 2.Pressure Balance for Submersible Motor in Wellbore 3.Axial force of the carrier pump 4.The replenishment of motor oil for submerged motor 5.Axial Seal for Submerged Motor |
| 10 | submersible motor | Required | self-expropriation | Used to convert electrical energy into mechanical energy and provide power for pump operation |
| 11 | downhole sensor | Optional | Customer-supplied | For real-time monitoring of well fluid and electric pump inlet pressure, temperature, vibration, insulation, etc. |
| 12 | director | Required | self-expropriation | Guiding and Stabilizing the Pump Downhole |
| Downhole cable equipment and accessories | ||||
| 1 | cable passer | Optional | Customer-supplied |
1.Used for cable sealing through wellhead device 2.Dimensional structure compatible with wellhead device 3.Capable of withstanding high ground voltage of motor |
| 2 | Power cable (flat cable) | Required | Customer-supplied |
1.Power Transmission for Downhole Tubing Stage 2.Cables should be compatible with well temperature and well conditions |
| 3 | Tension cables and tension cable connectors (small flat cables) | Required | self-expropriation |
1.Power Transmission for Downhole Electric Pump Stage 2.Cables should be compatible with well temperature and well conditions 3.It should be sealed to the motor. |
| 4 | Cable sheath and cable clamp or unit cable protector | Required | self-expropriation | Cable Fixation and Protection for Electric Pump Stage |
| 5 | YouTube:Cross-Connector Clamp Cable Protector | Required | Customer-supplied | Application of Cable Fixation and Protection in Oil Pipe Stage |
| number | device name | necessity | acquisition method | Device Description |
| Other Accessories for Underground Use | ||||
| 1 | Electric Pump Downhole Accessories Package (Including Motor, Protector, Wellhead Section or Separator, Pump, Gas Processor) | Required | self-expropriation | For one-time use parts in underground applications, such as O-rings, screws, and motor oil. |
| 2 | Cable connection accessory pack | Optional | self-expropriation | Used for connecting lead-in cables to power cables, such as insulating tapes and armored cables. |
| 3 | accessories for other equipment going down the shaft | Required | Some device providers offer | |
| downhole tools | ||||
| 1 | cable picking and laying machine | Optional | Available for purchase, lease, or other means of cable deployment | |
| 2 | cable pulley | Required | Customer-supplied | for cable deployment |
| 3 | oil filling equipment | Required | self-expropriation | For electric pump oil injection |
| 4 | electric pump hoist | Required | self-expropriation | For downhole hoisting |
| 5 | spindle | Required | self-expropriation | downhole disc shaft |
| 6 | lifting jack | self-expropriation | For use in electric motors, must | |
| 7 | other downhole tools | Required | Some device suppliers provide | |
| Type | Series | Maximum Diameter（mm） |
| Pump | 338 | 86 |
| Protector | 338 | 86 |
| Motor | 375 | 95.25 |
| Type | Series | Maximum Diameter（mm） |
| Pump | 400 | 101.6 |
| Protector | 400 | 10.1.6 |
| Motor | 456 | 115.82 |
| Type | Series | Maximum Diameter（mm） |
| Pump | 513/538/562 | 130.3/136.7/143 |
| Protector | 513 | 130.3 |
| Motor | 540/562 | 138/143 |
| Type | Series | Maximum Diameter（mm） |
| Pump | 675 | 171.45 |
| Protector | 675 | 171.45 |
| Motor | 738 | 187.45 |
| Type | Series | Maximum Diameter（mm） |
| Pump | 862 | 219 |
| Protector | 675 | 171.45 |
| Motor | 738 | 187.45 |
• Onshore Oilfield Development: The Electrical Submersible Pump is perfectly applicable to conventional oil wells, low-pressure oil reservoirs and water-flooding development wells, delivering stable daily crude oil lifting and satisfying long-term continuous production needs of land oilfields.
• Offshore Oil & Gas Production: Adaptable to narrow offshore well-bores and harsh marine working conditions, featuring compact structure and low failure rate to reduce offshore maintenance and operation costs.
• Special Reservoir Operation: Applicable to high-water-cut, slightly corrosive and abrasive oil wells, as well as geothermal oil wells, supporting safe and efficient fluid lifting in complex working conditions.
• Oil Well Stimulation & Restoration: Ideal for low-yield and exhausted oil wells, effectively improving fluid delivery efficiency and reviving the production capacity of aging oilfields.
•Structural Design: The Electrical Submersible Pump adopts a neat, compact appearance with multiple optional outer diameters, which can perfectly match different wellbore sizes and adapt to various types of oil wells.
•High Lifting Efficiency: Optimized multi-stage hydraulic structure delivers stable pressure boost and large flow rate, realizing high-efficiency continuous crude oil lifting.
•Excellent Environmental Adaptability: Equipped with premium sealing and protective structures, resisting corrosion and abrasion from down-hole mixed media of oil, gas and water.
•Low Operation Cost: Features low energy consumption, stable operation and low failure rate, greatly reducing manual maintenance and field shutdown losses.
•Long Service Life: Factory-calibrated assembly and high-load bearing design enhance overall structural stability and extend equipment running cycle.
A compact standard model designed for small-diameter conventional oil wells. It is suitable for general oilfield production applications requiring moderate flow capacity and economical operation.
Designed for coiled tubing deployment systems and suitable for medium and large-diameter oil wells. It supports applications requiring higher flow rates and lifting capacity.
High-load thrust bearings and sealed protection structures help withstand downhole impact loads and reduce equipment damage during operation.
Optimized hydraulic design reduces fluid flow resistance and hydraulic losses, helping lower energy consumption during continuous operation.
Multiple pump specifications and material options are available for applications involving corrosion, abrasion and high-temperature conditions.
Long service intervals, reduced maintenance frequency and consistent operating performance help reduce overall operating costs.
ESP selection should be based on actual well conditions and operating requirements.
Higher production wells require:
Larger pump diameter
Higher flow capacity
Optimized hydraulic stages
Deep wells require:
Higher head capability
More pump stages
Reinforced mechanical structure
Key factors include:
Water cut percentage
Gas content
Sand concentration
Corrosion level
Crude oil viscosity
High-temperature wells require:
High-temperature motor insulation
Heat-resistant materials
Improved cooling design
Core materials including alloy shafts and anti-corrosion components are inspected before production to verify compliance with downhole application requirements.
Computational fluid dynamics analysis and CNC machining are applied to improve the accuracy of impeller, diffuser and structural component processing.
Each pump unit undergoes flow performance testing, pressure testing, operation testing and sealing inspection before delivery.
Unified assembly procedures and factory calibration processes are implemented to maintain consistent product performance and reduce assembly deviations.
Production and testing records are maintained for product traceability and project verification.
