游梁式抽油机多模式控制系统设计与开发

摘要

为应对抽油机生产过程中复杂多变的工况,设计开发了游梁式抽油机多模式控制系统.该系统通过获取抽油机的电参数与位置信息,利用变频技术实现抽油机的恒速、上快下慢、上慢下快和功率随动等多种运行模式.结合开发的上位机软件能够实现抽油机状态信息的实时显示与存储.现场试验结果表明:多模式控制系统能够有效消除抽油机启动过程中带来的电流冲击,试验中的一口井在功率随动模式下运行,综合节电率达到10.4％.通过变更油井运行模式,多模式控制系统能够实现抽油机在多种复杂工况下高效、稳定、经济运行,具有较高的应用价值.%In order to deal with the complicated and variable working conditions in the production process of the pumping unit,a muhi-mode control system of the beam pumping unit is designed.By obtaining the electrical parameters and position information of the pumping unit,the developed system realizes multiple pumping unit operation modes like the constant speed mode,different speed between upper stroke and lower stroke mode and power servo mode by the frequency conversion technology.Combined with the development of the host computer software,real-time display and storage of the status information of pumping unit has been achieved.The field test showed that the multi-mode control system can effectively eliminate the current shock caused by the start of the pumping unit.A test well operated under the power servo mode has achieved the comprehensive energy saving rate of 10.4％.By changing the operation mode of oil well,the multi-mode control system can realize efficient,stable and economical operation of the pumping unit under several complicated working conditions,presenting high application value.