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| Inspecting defects inside impeller of electric submersible pump by fluid pressure loss measurement method |
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SHEN Y ue1,2,WET Shu-xian2,CONG Xiao-ran2
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(1.MOE Key Laboraiory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2. College of Physics Science and Technology in China University of Petroleum, Dongying 257061,Shandong Province, China)
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| Abstract: |
| The primary energy loss nf an electric submersible pump ( ESP) is derived from its waterpower loss caused by fluid movement，and additional waterpower l?ss can badly reduce the efficiency of ESP in employment because of obstacle from the fraction of casting residua settled in the flew path of the impeller. According to the boundary layer theory 1 the fluid pressure loss measurement method was presented to measure the flow path defect of the impeller by analyzing the local resistance and pressum loss produced by the obstacle inside the flow path of the impeller under the condition of simulating applica-.tiori using air as the media. The theoretic analysis and ex^rimental re&uhs show that this method is quick and effective in inspecting the impeller and has some ievelaioiy action on measuring the abnormal change of waterpower construction of relative small size and complicated impeller machine. |
| Key words: electric submemible pump pressure loss defects fluid resistance waterpower construction |
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