Comparison between the oilwell jet pump and other artificial lifting equipment shows that the jet pump is more suitable for oil recovery from complicated Wells.

将采油喷射泵与其他人工举升采油设备进行的分析对比表明，喷射泵更适用于复杂油井的开采。

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Detailed introduction and comparison are made on restoration methods of Wells with common failures, especially on comparatively complicated failures with well repairing technique of oil field.

对常见故障井的修复方法，特别是用油田修井技术对比较复杂的故障进行了详细介绍和对比。

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Unsteady porous flow in horizontal Wells with single or multiple fractures is a complicated study of mechanics through porous media.

穿过单条或者多条裂缝的压裂水平井不稳定渗流问题是一个复杂的渗流力学问题。

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This turned out to be one of the most complicated taxes of all time, considering that every single person or company that had any interest in oil or gas wells was subject to it and had to fill out onerous forms laying out their tax liability.

FORBES: Idiot Politicians Propose Regulating Oil Companies With 'Reasonable Profits Board'