关键词: 钢丝绳, 抽油杆, 抽油系统, 抽油模式, 预测方法

Abstract: The pumping model of wire rope sucker rod pumping system was developed by means of predicting calculation.This model can be applied to determine the optimum pumping parameters,taper of rod and pumping devices in middle or low-production deep well.The analysis results show that when applying this pumping system in middle or low production deep well,the best pumping model is the compound rod comprised of longer length stroke,lower pumping speeding,middle or small pump diameter,tubing being anchored and small diameter wire rope sucker rod with larger-diameter weight bar.This pumping model is suitable for enhancing the effective stroke and efficiency of pumping system and reducing the consumption of energy.Moreover,it is pointed that application of hydraulic pumping unit is propitious to exert fully the effective stroke of wire rope sucker rod,while sucker pump of heavy oil with large diameter makes against the exertion of the merit of the rod.

Key words: wire rope, sucker rod, pumping system, pumping model, prediction method