A pumping unit equipped with two rocker-pulley assemblies is devised for pumping oil from two neighbouring bores with similar well figures.

• 通过对设想的摇杆轮式双井抽油机进行运动和动力分析以及对两套摇杆机构几何尺寸的优化表明,这种抽油机不加平衡重就能得到良好的平衡效果;