关键词: 冲次调节, 平衡调节, 无功补偿, 智能排采, 智能间抽, 柔性闭环控制

Abstract: Nowadays, there are more and more stripper wells caused by sustained production of oilfields, many oil wells are pumped off due to the decrease in pumping unit efficiency, pumping units are worn excessively and pumping units can’t be remote controlled. For this reason, intelligent measurement and control system of pumping units which are applicable to oil and gas production were independently researched and developed. It is composed of the intelligent pumping unit measurement and control cabinet (HT-ZNCK), which consists of a power distribution cabinet, a data acquisition cabinet and a frequency conversion cabinet, and pumping unit of intelligent measurement and control platform. Besides the advantages such as data acquisition monitoring, reactive power compensation, worksite voice alarm and LED display on the spot, start-stop control, strokes adjustment, balance adjustment, switch over for power frequency/ frequency conversion and other functions are added based on local and remote pumping units. Application in more than 90 oil and gas wells shows that the system solved problems that the data acquisition is not accurate, balance cannot be adjusted and remote control cannot be done. Intelligent drainage, intelligent interval pumping, flexible closed-loop control, and reactive power compensation are implemented. Therefore, the production efficiency of oil and gas field enterprises is improved, labor intensity and safety risks of the personnel are reduced so that stable production, energy saving and consumption reducing, and quality and efficiency enhancing are achieved.