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The centralizers can add the polished rod load, and affect the pumping system efficiency. A pumping system efficiency model has been built by considering the influence of centralizers on polished rod load. The influence of centralizers, stroke length, pumping speed and flooding period on sucker rod pumping system efficiency and production has been studied. The results indicate that the sucker rod pumping system efficiency and production rate decrease while the number of centralizer increases, but the influence of number of centralizer on sucker rod pumping system efficiency and production rate is not big while the influence of stroke length and pumping speed is significant. The sucker rod pumping system efficiency first increase obviously and then trend to be gentle with the stroke length and pumping speed increasing. The pumping system efficiency in main slug of ASP flooding is lowest. The optimization value of stroke length and pumping speed has been selected to maximize the pumping system efficiency. And hence get the reasonable pump depth, and system efficiency, it have reference significance to the reasonable production

The Sucker Rod Pump Parameters Optimization of Horizontal Wells with ASP Flooding Considering the Influence of Centralizers