1) streamlined pump
流线型抽油泵
2) jet pumping
射流泵抽油
3) Large scale pumping unit
大型抽油泵
4) hollow oil pump with circulation current
空心环流抽油泵
1.
Whole course electric heating on heavy oil from a position below the pump upto the well head in wellbore including pump body is realized by using surface action of electric heating with hollow pumping rod and using hollow oil pump with circulation current and which can be crossed by cable.
通过空心抽油杆集肤效应电加热技术及其电缆可以穿越的空心环流抽油泵的制造、应用技术，实现了对井筒内的调油从泵下、泵体、泵上直至井口，进行全程电加热。
5) oil pumping
泵油;抽油
6) pump valve-ball
抽油泵泵阀
1.
It is the key study how to make sure the pressure distribution of liquid in the pump barrel and to study the pump valve-ball's movement to improve the systematic efficiency.
对有杆抽油泵泵阀运动规律的研究和确定抽油泵泵阀筒内液体压力的分布是提高抽油机井系统效率研究的关键性课题。
补充资料：流线型
前圆后尖，表面光滑，略像水滴的形状。具有这种形状的物体在流体中运动时所受阻力最小，所以汽车、火车、飞机机身、潜水艇等的外形常做成流线型。
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