方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.
而油管尺寸大小对水平井开采效果的影响说明，增大油管尺寸可明显达到提高水平井开发效果的目的。
According to the influence of tubing size on the exploitation results with horizontal Wells, it can improve the exploitation results with horizontal Wells obviously to enlarge the tubing size.
计划中的大号拱心石石油管道将用于运输产自加拿大油沙的重原油。
The proposed Keystone XL pipeline would carry heavier crude oil produced from tar sands in Canada.
舍德兰群岛（ Shetlands）西部并无石油管道。 在未发现新型大油田的前景下，得不到利益诱惑的众多企业也不愿意修建任何管道。
There are no pipelines west of the Shetlands, and without the prospect of giant new fields to lure them, companies are reluctant to build any.
全国各大油田对高精度、高稳定性输油管道泄漏检测器的需求也日益增加。
Demand for high precision, high stability oil pipeline leak detection devices is increasing in National major oil fields.
全国各大油田对高精度、高稳定性输油管道泄漏检测器的需求也日益增加。
Demand for high precision, high stability oil pipeline leak detection devices is increasing in National major oil fields.
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