Inclination-holding Control Method for Rotary Steerable System Based on Fuzzy-PID

As an urgent equipment for unconventional oil and gas development, Rotary Steerable System (RSS) plays an increasingly important role in oil and gas exploitation and other industrial fields. At the same time, in order to improve the drilling efficiency of tools and reduce the error interference caused by human operation, RSS needs to develop in the direction of downhole closed-loop automatic drilling and intelligence. This work focuses on downhole automatic inclination-holding drilling of RSS. Based on the Rotary Steerable System tool, a drilling tool simulation model is first established. Then, by using the deviation between the current inclination and the target inclination, the toolface angle is controlled, enabling the tool to drill or maintain along the target inclination. The control strategy used is fuzzy PID control method, and the control effect is better than the traditional PID control, which provides a new method for RSS intelligent control.