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What is Progressive Cavity Pump?
In many cases all around the world, especially in old oil fields, fluid cannot flow on itself into the surface. This is a combination of reduced oil-bearing-matrix pressure and increasing liquid density due to increased ratio of water production. For this case, oil field operators utilized various in-well pumps to flow the liquid to surface and all the way to the final storage points. There are various type of pumps available for various well specifications and needs. There are Electric Submersible Pumps (ESP), Progressive-Cavity Pumps (PCP), and Plunger Pumps (the horse-head type). Progressive Cavity Pump works by rotating a helix form shaft inside a room that is shaped like a helix also. The room is walled by high-performance polimer (called elastomer) that is surrounded by a tube. The helical shaft and the helical room are positioned so that between them are cavities. These cavities will look like they are moving upward as the helical shaft rotate. If there are any fluid trapped inside the cavities, they will be transported upward into the tubular string that have the PCP at the end of it, into the flowline, and finally into the product storage. The helical shaft is rotated by on surface motor that have long string consists of thin beams which ends in the helical shaft. |
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The copyright for this content entitled "What is Progressive Cavity Pump?" has been specified by the contributor as:
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This intel was contributed by Zenstrive
Zenstrive
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May, 2012
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