前言 泵效是衡量有杆抽油泵工作性能的一项重要指标。 在油井生产过程中,有杆抽油泵的泵效受到多种因素的影响,其中主要的是地层因素和泵的结构。地层因素包括结蜡、含砂以及游离气等。泵结构的因素主要指油管漏失、柱塞与泵筒配合间隙不当引起的漏失、抽油泵零件磨损引起的漏失,以及井内含有腐蚀性物质的液 Introduction Pump efficiency is a measure of rod sucker pump performance is an important indicator. In the well production process, the pumping efficiency of the sucker rod pump is affected by many factors, of which the main factor is the formation factor and the structure of the pump. Stratigraphic factors include waxing, sand and free gas. Pump structural factors mainly refers to the tubing leakage, plunger and pump cylinder with the gap caused by improper leakage, pump parts wear caused by the loss, as well as wells containing corrosive liquid