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Progressing Cavity Pumps (PCP)

This is the most efficient method of artificial lifting which is initially used to produce sand-laden oil, but nowadays, with the advancement of technology, the scope of its operation has been extended to the lighter oils.
In this method, a spiral rod (rotor) is located eccentrically inside an elastic spiral chamber (stator) and connected to a surface electric motor through narrow rods.
When the engine is turned on, the rotor rotates inside the stator and, by generating a relative vacuum in the closed compartments between the rotor and the stator and transferring the kinetic energy to the fluid, generates the well fluid through the increase of fluid pressure. 

PCP PUMP

                                                                                                                                                                                                       

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