Development and application of intelligent switch control system for layered oil production

Layered oil production is an important means to solve the interlayer and plane contradiction and to tap the potential of remaining oil in high water-cut stage for oilfields. The intelligent switch is one of the core tools for layered oil production, while under high-temperature and high-pressure environment, the effective life of the intelligent switch is short, and the function of the intelligent switch acts unreliably. Using single chip control and low power consumption mode, the key components of the power supply module, motor drive module, and pressure monitoring module of the intelligent switch control system were optimized, and the circuit was designed. Furthermore, the control programs for timing alternating production, remote layer adjustment, and pressure monitoring were developed, which realized control functions, such as timing alternating production and pressure signal layer adjustment, for the intelligent switch. By using VB6.0 programming language, a set of man-machine interface was developed, realizing the functions of communication, parameter setting, and data playback. Indoor tests and field applications show that in the high-temperature and high-pressure environment, the timing alternating production and remote layer adjustment of the intelligent switch are stable and reliable, with effective life more than 1 year, which meets the needs of intelligent layered oil production process.