Research of Auto-drilling Technology Based on Parameters' Self-tuning Fuzzy Control
نویسندگان
چکیده
Due to the shortcomings of the traditional drilling way, as well as the complexity and difficult mathematical model of the drilling process, etc, this paper briefly analyses the principle of auto-drilling system on AC frequency conversion and the relationship among all factors that affects on the auto-drilling and puts forward a technology that combines parameters' self-tuning fuzzy control with constant WOB(Weight On Bit) auto-drilling technology on AC frequency conversion. Through the judgment of drilling pressure trend, the application of parameters' self-tuning fuzzy control realizes the control of the rig's speed. The algorithm does not need accurate mathematical model, and it can learn to fix control parameters in real time by itself. The test shows that the control system has good performance and ensures constant WOB and stable speed in auto-drilling, and the control algorithm can also be used in other auto-drilling systems.
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