INTELLIGENT CONTROL SYSTEM OF ELECTRIC DRIVE FOR SUCKER ROD PUMPING UNIT
Using intelligent control systems can improve the level of information security processes operating oil wells. In such systems, the controller carries out the measurement of process parameters, analysis and processing with subsequent transfer of data to the control center of fishing. In the fields, exploited for decades, the introduction of automated information systems is especially important, because pumps are often worn out, well dispersed over vast areas and access of operational maintenance teams is difficult. For remote monitoring of the process of operating the well is equipped with a number of sensors of technological parameters. The composition of the process depends on the type of sensors downhole pump on the characteristics of the deposit, as well as the requirements of the oil company. The wells operated by sucker rod pumps, equipped with optional sensors force and displacement rod. The paper describes developed at the department of electrical engineering and electrical companies of Ufa State Petroleum Technological University intelligent well control station with variable frequency drives. Intelligent management station comprises a load cells and wellhead annulus pressure, the downhole controller, a frequency converter, a radio, a crank angle sensor pumping unit and the rotation angle of the rotor of the motor, as well as sensors wattmeter. For wells, equipment already physically obsolete provided sensor connection protection: state indicators rocker bearings, connecting rod failure, the oil level in the gearbox, roll installation, overheating the gland assembly. Mathematics software developed for control system has the functions of automatic identification and analysis of dynamometer and autonomous control electric downhole pump with a certain production parameters. The control system is preparing for field tests on the wells of several industries in different regions of the Russian Federation. The use of intelligent control systems in the automation of submersible pumps will improve the efficiency and safety of processes of extraction of hydrocarbons, the oil producing companies to reduce costs and, consequently, the cost of oil.