通过对螺杆泵采油系统进行分析，得到抽油杆柱力学模型，并对杆柱所承受载荷进行推导计算。
Analysis screw pump system, get the mechanical model of rod string, deduct and calculate undertaking load of rod string.
螺杆泵井运行过程中经常出现杆柱断脱、蜡卡、烧泵等现象。
For screw pump well, the following accidents, such as rod breaking, wax locking and pump burning, always happened.
由于定向井井身结构特殊，利用螺杆泵进行抽油时如不采取任何措施势必造成杆柱严重磨损甚至卡死。
Due to the special structure of controlled direction well, it can lead to severe abrasion even jamming if not adopting any measure when using progressing cavity pump rod to pump oil.
钢管混凝土柱的核心混凝土采用泵送顶升工艺施工的关键是配制自密实混凝土。
The key to adopting pumped concrete lifting technology for core concrete of steel pipe concrete columns is to prepare self compacting concrete.
螺杆泵工作时，杆柱不但受到拉应力，而且受到剪应力。如果设计不当或使用中监测不力，螺杆泵很容易发生故障。
When screw pump works, the stem can not only influence by the force of tension stress but also the shearing stress which makes it to be failure easily if the design is not good or monitor is poor.
介绍了泵送混凝土人工点柱支护工艺，并对该工艺进行了一系列可操作性试验，在湘西金矿沃溪矿区2364采场进行了采矿试验。
The technology and practice of artifical pumpcrete pillar support is briefly introduced in this paper. The mining test was carried out using the pillars, at 2364 stope of Woxi mining district.
国际领先的大流量高压柱塞泵设计，专业的动态轴向压缩制备柱设计。
International level large flow rate high pressure piston pump design, professional dynamic axial compression column design.
之后司钻上提整个钻柱，移去卡瓦，在开泵并旋转的同时小心地下放钻柱，当钻头接触到井底之后，重新开始钻进。
The driller then picks up the entire drillstring to remove the slips, carefully lowers the drillstring while starting the pumps and rotary, and resumes drilling when the bit touches bottom.
针对井口驱动螺杆泵抽油杆柱断脱频繁的问题，应用弹塑性理论分析了抽油杆柱在井中的受力状况。
In the light of the frequent breaking of the rod string in a surface driven screw pump well, the force condition of the string in the well is analyzed by means of the elastoplasticity theory.
针对井口驱动螺杆泵抽油杆柱断脱频繁的问题，应用弹塑性理论分析了抽油杆柱在井中的受力状况。
In the light of the frequent breaking of the rod string in a surface driven screw pump well, the force condition of the string in the well is analyzed by means of the elastoplasticity theory.
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