以抽油杆柱为研究对象，论述了斜直井游梁式抽油机冲程和冲次的计算方法。

Taking the rod string as the object of study, a method of computing pumping stroke and speed of walking beam pumping units for slant straight wells is also presented.

youdao

以抽油杆柱为研究对象，论述了斜直井游梁式抽油机冲程和冲次的计算方法。

Taking the rod string as the object of study, a method of computing pumping stroke and speed of walking beam pumping units for slant straight wells is also presented.

youdao