Desander protects downhole pump

11/05/2001
Field tests in Canada demonstrated the effectiveness of a downhole desander to protect electric submersible pumps (ESPs) from failure caused by the production of formation sand. An abrasive environment can cause radial wear of the pump bearings, leading to vibration, which inevitably results in equalizer and motor failure.Erosion of diffusers and impellers also reduces the efficiency of the pumping system, resulting in less than optimal production from the well.Husky Energy Inc., formerly Renaissance Energy Ltd., initiated the tests as part of its efforts to reduce operating costs, 24% of which it attributed to well workovers and related servicing costs. The combination of high volume lif...
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