有杆抽油系统效率和平衡分析研究

发布时间：2018-02-20 00:37

本文关键词： 有杆抽油系统效率评价 matlab 数字化抽油机优化设计　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：在国内外的机械采油方式中,有杆抽油是一直占绝对主导地位的人工举升方式,但有杆抽油机也存在很多缺点,能耗高,效率低等。如我国油田在用的常规型游梁式抽油机系统,其系统效率仅有16%~23%。有杆抽油系统的节能问题已成为国内外研究者关注的热点和重点.因此,研究有杆抽油系统效率具有非常重要的经济效益和社会意义。本文在对有杆抽油系统各部分效率的数学模型分析研究的基础上,给出了有杆抽油系统的效率分析模型;针对有杆抽油系统的结构特点和能耗大的问题,按照可独立进行节能改造或实施节能措施的原则,把有杆抽油系统的系统总效率分解为各单元的分效率。根据抽油机平衡判断原则,设计功率法平衡判别方法,确定抽油机平衡度合理区间。采用matlab仿真分析在载荷变化和载荷不变情况下游梁式抽油机的平衡度与四连杆机构的传动效率之间关系,指出游梁式抽油机平衡度调节的重要性。对有杆抽油系统效率影响因素进行分析:主要分析了有杆抽油系统在举升过程中的:平衡度、沉没度、抽汲参数等影响因素。通过分析各个要素影响有杆抽油系统机理和现场实验数据仿真,判断有杆抽油系统效率对平衡度、沉没度和抽油机参数变化的敏感性,为有杆抽油系统效率优化提供理论依据。在考虑公式计算系统效率的同时,建立了定性与定量相结合的抽油机井系统效率综合评价体系,实现了单个因素的评估与对比,由此可直接发现抽油机井系统效率存在的问题。依据数学模型,编制了“有杆抽油系统效率评价软件”,检验了该模型可行性,为数字化抽油机系统效率评价系统开发提供了方案。
[Abstract]:In the domestic and foreign mechanical oil extraction methods, rod pumping is always the dominant way of artificial lift, but the rod pumping unit also has many shortcomings, high energy consumption, The efficiency is low. For example, the conventional beam pumping unit system in use in oil fields in our country, its system efficiency is only 16 and 2323.The energy saving problem of the rod pumping system has become the hot spot and focus of researchers at home and abroad. It is of great economic and social significance to study the efficiency of rod pumping system. On the basis of analyzing and studying the mathematical model of the efficiency of each part of the rod pumping system, the efficiency analysis model of the rod pumping system is given in this paper. In view of the structural characteristics of sucker rod pumping system and the problem of large energy consumption, according to the principle that energy saving reform can be carried out independently or energy saving measures can be carried out independently, The total system efficiency of the rod pumping system is decomposed into the sub-efficiency of each unit. According to the principle of judging the balance of the pumping unit, a balance discriminant method of power method is designed. The reasonable range of pumping unit balance is determined. The relationship between the balance of downstream beam pumping unit and the transmission efficiency of four-bar linkage mechanism is analyzed by matlab simulation under the condition of load change and load invariance. This paper points out the importance of adjusting the balance of beam pumping units, analyzes the factors influencing the efficiency of the rod pumping system, and mainly analyzes the balance degree and the sinking degree of the rod pumping system in the process of lifting. By analyzing the mechanism of sucker rod pumping system and the simulation of field experiment data, the sensitivity of the efficiency of sucker rod pumping system to balance, sinking degree and parameters of pumping unit is judged by analyzing the influencing factors, such as swabbing parameters, and so on. This paper provides a theoretical basis for the optimization of rod pumping system efficiency. A comprehensive evaluation system of pumping well system efficiency, which combines qualitative and quantitative analysis, is established, and the evaluation and comparison of single factors are realized. According to the mathematical model, the software for evaluating the efficiency of sucker rod pumping system is developed, and the feasibility of the model is tested. It provides a scheme for the development of the system efficiency evaluation system of digital pumping unit.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE933.1

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