The pump efficiency of 32% rod pumped Wells in Erlian Oilfield is lower than 30%, and increasing production centralizer is introduced to solve this problem.

二连油田有32%的抽油机井泵效低于30%，为此有针对性地引进了增抽扶正器配套工艺。

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The side-abrasion failure of rod string for polymer drive pump wells is analyzed by using computer simulation method. The extension of fuzzy reliability analysis is expanded to mechanical system.

将计算机数字仿真技术引入聚驱井管杆偏磨失效模糊可靠性分析中，把模糊可靠性的分析范围扩展至机械系统。

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Abstract : To address the issue of "gas lock" caused by CO2 gas-channeling in gas injection wells, the forced pull rod type hollow gas prevention pump for CO2 flooding has been developed.

摘要 ： 针对注气井CO2气窜而造成生产井气油比上升，常规管式泵游动阀打不开而导致的“气锁”问题，研制了CO2驱中空强制拉杆式防气泵。

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