... conventional overbalanced perforating 常规正压射孔 conventional pumping unit普通抽油机 conventional well常规井 ...
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Compared with the conventional pumping unit power saving effect is obvious.
与常规抽油机相比节电效果明显。
The article introduces systematically the schematic method for the six-bar modification of a conventional pumping unit by use of Stephenson' chain.
系统地介绍了采用斯蒂芬森链对常规型游梁机进行六杆式改造的图解方法。
The conventional pumping unit is still the main pumping unit in the field at present, the main reason is that its structure is simple, operation and maintain are convenience, and its use life is long.
目前各油田的抽油设备主要仍为常规游梁式抽油机，其主要原因是该机结构简单，操作维护方便，使用寿命长。
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