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。
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。
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。
The problem of eccentric wear of tubing and rod strings in rod pumped Wells is very severity in recent years, and led to service frequently, pump inspection period shorten and service cost enhanced.
近年来抽油机井管、杆之间的偏磨问题十分突出，导致作业频繁，检泵周期短，作业成本增加。
The problem of eccentric wear of tubing and rod strings in rod pumped Wells is very severity in recent years, and led to service frequently, pump inspection period shorten and service cost enhanced.
近年来抽油机井管、杆之间的偏磨问题十分突出，导致作业频繁，检泵周期短，作业成本增加。
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