由于近些年来我们为了提高采出液量应用了聚合物驱油等方法,这些方法虽然提高了采出量,但是使得抽油机杆和管受力不均产生偏磨现象,同时也使检泵周期缩短。为了避免这种情况加剧,我们将在本文中对直井中下行程杆柱的受力情况进行分析,同时也将对现有的防止偏磨方法进行对比研究并找出新的更有效的方法。 In recent years, we have used polymer flooding and other methods in order to increase the amount of produced fluid. Although these methods increase the amount of oil produced, the method makes partial uneven wear of the rods and tubes of the oil sucker rod, Pump cycle shortens. In order to avoid this situation from increasing, we will analyze the stress of the downhole pole in the vertical well in this paper. Meanwhile, we will make a comparative study of the existing methods to prevent eccentric wear and find new and more effective methods.