斜直井抽油泵杆柱动态参数预测

A Discussion on the Dynamic Parameters of the Rod String in Slant Straight Wells

根据斜直井抽油杆柱工况特点,建立了斜直井抽油杆柱的一维有阻尼波动方程。利用微机对斜直井抽油杆柱动态参数的预测计算结果表明,与竖直井相比,斜直井最大光杆载荷变化不大,最小光杆载荷减小很多。这对斜直井抽油杆柱的设计和使用有重要参考价值。

According to the operating mode of the rod string in slant straight wells, the authors establish a one-dimensional damped wave equation for the rod string. The result of computerization of the rod string dynamic parameters indicates that the maximum polished rod load in slant straight wells changes not obviously and the minimum polished rod load decreases prominently in comparison with that in verticle wells. This conclusion is of great importance to the design and use of the rod string in slant straight wells.