在常规有杆抽油方式中,用油管和抽油杆作为配套管柱,耗材多,泵效低。无油管采油技术为解决上述问题另辟了溪径。无油管采油技术是用空心杆代替油管和实心抽油杆,将泵筒直接悬挂在套管上,用空心杆带动柱塞完成抽油过程。该技术泵效高,可降低成本,减少劳动强度,并直接解决了由实心杆和油管组成的管柱所无法避免的管杆偏磨问题。 In the conventional rod pumping method, the tubing and sucker rod as a supporting column, supplies and more, low pump efficiency. No oil pipeline technology to solve the above problems opened up the river path. No oil pipe production technology is hollow rod instead of tubing and solid sucker rod, the pump cylinder is suspended directly on the casing, with a hollow rod driven plunger to complete the pumping process. The technology of high pump efficiency, can reduce costs and reduce labor intensity, and direct solution to the solid rod and tubing composed of the column can not be avoided rod eccentric wear problems.