Through the experiments, we have studied the working characteristics of the down-hole pump at different inclined angles and studied the moving pattern of ball valves.
以试验为手段，研究了深井泵在一定倾斜角度下的工作特性及球阀的运动规律。
Electrical submersible pump lifted Wells is the main high rate artificial lift method in the high water cut period, but it is difficult to determine the down hole failure during productions.
油田进入高含水期所采用的电潜泵作为增大排液量的方法，在生产过程中容易出现许多不易判断的井下故障。
In the light of the key technique of the down-hole driven progressive cavity pump (PCP) for oil production, a power distributional planetary reducer is proposed.
针对井下驱动螺杆泵的关键技术问题，提出了用于井下直接驱动螺杆泵的功率分流式行星减速器。
Testing instrument was installed in sampler at heel of hydraulic pump, put into down-hole with pump, and it can examine water cut of formation fluid, save history curves in real time by data memory.
测试仪器安装在水力活塞泵泵芯尾部取样器内，随泵芯投入井下进行测试，可实时检测地层液的含水率情况，利用数据存储器实时保存历史曲线，提供了全天候观测生产过程的手段。
Testing instrument was installed in sampler at heel of hydraulic pump, put into down-hole with pump, and it can examine water cut of formation fluid, save history curves in real time by data memory.
测试仪器安装在水力活塞泵泵芯尾部取样器内，随泵芯投入井下进行测试，可实时检测地层液的含水率情况，利用数据存储器实时保存历史曲线，提供了全天候观测生产过程的手段。
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