定向井有杆泵采油悬点载荷计算

Calculation of polished rod load of pumping unit at directional wells.

把定向井有杆泵采油的抽油杆柱看成柔索,油管为其刚性轨道。通过在造斜井段建立微分方程的方法,求得造斜井段抽油杆柱上、下冲程的轴向拉力计算式,进而求得悬点载荷计算式,并进行了实例计算。

Regarding the rod string of a pumping system for directional wells as a suspended cable and the tubing string as a rigid track, this article works out the formulas for calculating the rod string tensions on the upstroke and the downstroke at the angle-building section through differential equation method, and derives the formula for computing the polished rod load.