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ALIntroduction.ppt
* * Rod Pumps PC Pumps Hydraulic Lift Submersible Pump Gas Lift Introduction to PC PumpsComparison of Lift Methods Comparison of Lift Methods Artificial Lift - Selection Applicability of ESP’s Rod Pumps PC Pumps Hydraulic Lift Submersible Pump Gas Lift A centrifugal pump produces constant head. This means that, regardless of the fluid being pumped, it will be lifted to the same height as any other fluid for the same flow rate. Each stage consists of an impeller and a diffuser. The impeller takes the fluid and imparts kinetic energy to it. The diffuser converts this kinetic energy into potential energy (head). From this curve we can determine the head produced, brake horsepower required and hydraulic efficiency at any flow rate. Intakes The intake provides a fluid entry path for the pump. Gas separation devices are used in many wells to separate some of the gas from the liquid. QD 23-Nov-05 System Components Pump Cable Protector Motor Monitoring Tool QD 23-Nov-05 Protector The protector serves four main functions: Equalizes the internal and external pressure of the motor Supports the thrust produced by the pump Prevents well fluid entry into the motor Motor oil reservoir Shaft bushing Labyrinth Chamber Shaft Seals Thrust Bearing Filter Screen Shedder Elastomer Bag QD 23-Nov-05 Protector Options QD 23-Nov-05 The next part of the REDA system is the submergible motor. The motor is a three phase, squirrel cage, two pole induction design. QD 23-Nov-05 Thrust Bearing Rotor Bearing Coupling Pot Head Copper Windings Stator Steel Laminations Rotor Shaft Motor oil fill plug Stator Brass Laminations QD 23-Nov-05 50% 60% 70% 80% 90% 100% 40% 80% 70% 60% 55% 65% 75% 85% Percent Power Factor 3460 3480 3500 3520 3540 3560 Speed RPM 90% 82% 84% 86% 88% Percent Efficiency 90% 80% Percent Of base load Motor Performance Curves QD 23-Nov-05 Y - String : Blanking Plug, WL logging Plug CT Logging Plug 塞堵, 电缆测井塞,连续油管测井塞 Blanking Plug Prevent recirculation of pro
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