油管中频电加热除蜡方法研究
发布时间：2018-08-07 10:26
【摘要】：本课题的目的是为了开发一种新的油井除蜡电加热方法。本文理论依据是基于电磁效应变电阻加热油管的方法,控制方法采用模糊PID控制理论,从而达到对温度的准确的控制,最后对加热电路进行设计,实现油井采油效率的提高,从而达到提效、节能的效果。此方法不同于之前通过电源加热空心抽油杆除蜡的方法,而是直接加热油管来进行除蜡,利用电磁效应变电阻原理产生热能,对油井采油加热降低粘稠度。这种方法可对在油管管壁和抽油杆上的结蜡有很好的效果,同时减少抽油机负荷。运用的电磁效应变电阻原理的核心是集肤效应与邻近效应,通过对集肤效应原理和邻近效应原理的分析,以油管电路为模型,从电磁学的角度分析了加热的发生机理,为应用方波交流电对电磁效应变电阻加热系统进行设计铺平了道路。本文控制对象是基于电磁效应变电阻加热系统,具有变量多、非线性、大滞后及干扰性强的特点,所以为了达到控制目的不能采用常规的控制方法。本系统设计了基于模糊的PID控制器,能够按照设定温度和负载温度侧采集的实时温度来调节逆变侧。运用中频加热电源工作原理设计了一个油管中频加热电源,其中控制部分选用PLC,主电路选用AC-DC-AC变频电路。本文对温度控制策略进行了MATLAB仿真验证,完成采油管中频感应加热电源主电路硬件的设计,并对在实际现场应用中可预见的系统故障进行外围电路进行设计以及系统可靠性调整。对装置进行现场模拟试验,证明中频加热电源对温度能够进行准确控制并且系统运行稳定,大大提氋了高含蜡石油热处理效果,从而使得油井采油效率得到提高,能够达到系统的商业化油井采油要求。
[Abstract]:The purpose of this paper is to develop a new electric heating method for oil well dewaxing. The theoretical basis of this paper is the method of heating tubing with variable resistance based on electromagnetic effect. The control method adopts fuzzy PID control theory to achieve accurate control of temperature. Finally, the heating circuit is designed to improve the oil production efficiency. In order to achieve efficiency, energy saving effect. This method is different from the previous method of dewaxing by heating hollow sucker rod by power supply, but directly heating the tubing to dewaxing. The heat energy is generated by using the principle of changing the resistance of electromagnetic effect, and the viscosity of oil well is reduced by heating the oil well. This method has a good effect on the wax deposit on the tubing wall and the sucker rod, while reducing the load of the pumping unit. The core of the electromagnetic effect variable resistance principle is the skin effect and proximity effect. Through the analysis of the skin effect principle and the proximity effect principle, taking the tubing circuit as the model, the mechanism of heating is analyzed from the point of view of electromagnetism. It paves the way for the application of square wave alternating current to the design of electromagnetic effect variable resistance heating system. The control object in this paper is a variable-resistance heating system based on electromagnetic effect, which has many variables, nonlinear, large delay and strong disturbance, so the conventional control method can not be adopted for the purpose of control. A fuzzy PID controller is designed in this system, which can adjust the inverter side according to the real time temperature collected from the set temperature and load temperature side. A tubing intermediate frequency heating power supply is designed based on the working principle of intermediate frequency heating power supply, in which the control part is controlled by AC-DC-AC and the main circuit is composed of AC-DC-AC frequency conversion circuit. In this paper, the temperature control strategy is verified by MATLAB simulation, and the hardware design of the main circuit of the intermediate frequency induction heating power supply is completed. The peripheral circuit design and system reliability adjustment are carried out for the foreseeable system faults in the actual field application. The field simulation test of the device proves that the if heating power can accurately control the temperature and the system runs stably, which greatly improves the heat treatment effect of the high waxy oil, thus improving the oil recovery efficiency of the oil well. It can meet the requirement of commercial oil well production.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358.2
[Abstract]:The purpose of this paper is to develop a new electric heating method for oil well dewaxing. The theoretical basis of this paper is the method of heating tubing with variable resistance based on electromagnetic effect. The control method adopts fuzzy PID control theory to achieve accurate control of temperature. Finally, the heating circuit is designed to improve the oil production efficiency. In order to achieve efficiency, energy saving effect. This method is different from the previous method of dewaxing by heating hollow sucker rod by power supply, but directly heating the tubing to dewaxing. The heat energy is generated by using the principle of changing the resistance of electromagnetic effect, and the viscosity of oil well is reduced by heating the oil well. This method has a good effect on the wax deposit on the tubing wall and the sucker rod, while reducing the load of the pumping unit. The core of the electromagnetic effect variable resistance principle is the skin effect and proximity effect. Through the analysis of the skin effect principle and the proximity effect principle, taking the tubing circuit as the model, the mechanism of heating is analyzed from the point of view of electromagnetism. It paves the way for the application of square wave alternating current to the design of electromagnetic effect variable resistance heating system. The control object in this paper is a variable-resistance heating system based on electromagnetic effect, which has many variables, nonlinear, large delay and strong disturbance, so the conventional control method can not be adopted for the purpose of control. A fuzzy PID controller is designed in this system, which can adjust the inverter side according to the real time temperature collected from the set temperature and load temperature side. A tubing intermediate frequency heating power supply is designed based on the working principle of intermediate frequency heating power supply, in which the control part is controlled by AC-DC-AC and the main circuit is composed of AC-DC-AC frequency conversion circuit. In this paper, the temperature control strategy is verified by MATLAB simulation, and the hardware design of the main circuit of the intermediate frequency induction heating power supply is completed. The peripheral circuit design and system reliability adjustment are carried out for the foreseeable system faults in the actual field application. The field simulation test of the device proves that the if heating power can accurately control the temperature and the system runs stably, which greatly improves the heat treatment effect of the high waxy oil, thus improving the oil recovery efficiency of the oil well. It can meet the requirement of commercial oil well production.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358.2
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5 崔洁s，
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