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俄罗斯科研人员通过多个公式的计算推导和对比分析后得出,在指定工作条件下,地面驱动螺杆泵即使在垂直井段中,泵上的杆管也存在失稳现象,并产生弯曲。由于油管内外的压差,地面驱动螺杆泵的装置中杆管失稳状况要比抽油泵明显。在用地面驱动螺杆泵采油时,必须采用减少杆管纵向弯曲的技术措施,其中包括应用杆管钻铤、斜井段安装杆管扶正器,以及应用不仅能够防止油管柱下部转动、而且可以防止其向上轴向移动的油管锚。
Russian researchers through a number of formulas derived from the calculation and comparative analysis concluded that under specified operating conditions, the ground-driven screw pump in the vertical well section, the pump rod tube instability, and there is bending. Due to the pressure difference between the inside and outside of the tubing, the instability of the rod in the ground-driven screw pump is more obvious than the pump. When using ground-driven screw pumps to pump oil, technical measures to reduce the longitudinal bending of the pipe must be adopted, including the application of the pipe pipe collar and the inclined shaft to install the pipe centralizer, and the application can not only prevent the lower part of the oil pipe from rotating, but also prevent Its upward axial movement of the anchor.