关键词: 钢丝绳, 抽油杆, 抽油系统, 杆柱组合, 优化设计, 工作参数, 现场应用

Abstract: A optimization method for design of wire rope sucker rod pumping system in wellbore was developed by means of system engineering nodal analysis. This design method can be used to quantitatively calculate the coordination point of inflow and outflow in wells, scientifically select pumping parameters and taper of rod, analyze force profile of compound rod comprised of wire rope, sucker rod and weight bar and also used to predict dynamic working states including output, stroke efficiency, pumping efficiency and downhole system efficiency affected by key pumping parameters such as pumping depth, stroke, frequency of stroke and pump piston size. The software worked according to this method was innovated. The calculation result by the software can provide theoretical references to the optimization of pumping parameters in wire rope sucker rod pumping system. The better benefits have been achieved in practice.

Key words: wire rope, sucker rod, pumping system, taper of rod, optimization design, pumping parameters, application