1) out of phase pumping units
异相型抽油机
2) hetero-beam oil extractor
异相游梁抽油机
1.
8—73HF/B-type hetero-beam oil extractor, the contents of the transformation include reducing the mass of the rear balance weight under the precondition that the moment of the rear balance weight of the beam doesn't change; the rear balance weight after the transformation has the single welding structure through the bolt connection and welding struc.
8—73HF/B型异相游梁抽油机后配重进行了改进。
3) special beam pumping units
异型游梁式抽油机
1.
Owing to its excellent performance, special beam pumping units(also called as two horsehead pumping units) is widely used in oil fields at present.
初步研究发现，API中给出的常规抽油机游梁的设计方法，主要是游梁的强度校核方面，许用安全系数的选取上并不完全适应异型游梁式抽油机游梁的设计，没有考虑后驴头与游梁的连接形式对游梁结构应力状况的影响。
4) new-style and long-stroke pumping unit
新型抽油机
1.
On the basis of creative-design theory of machine and the combination principle, a new-style and long-stroke pumping unit was designed.
该新型抽油机由曲柄摇杆机构与双变径增程天轮机构组成 ,可以通过对现有的游梁式抽油机进行改造而制得。
5) conventional pumping unit
常规型抽油机
1.
Design for a multi-objective optimal algorithm of conventional pumping unit;
常规型抽油机多目标优化算法设计
6) (changeablearm beam pumping unit)
变臂型抽油机
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条