Abstract: Well control training was explained mainly by teacher in recent years. Virtual simulation made it difficult for students to understand the actual operation. Application of drilling well control simulation training system solved effectively the problem of the scene seldom repetition and high cost of well control training. For the simulation of the process of ram blowout preventer shut-in locking in the well controlled physical simulation training system, the stepping motor driver and the stepping motor were installed in ram blowout preventer, and locking operation of the lock device was realized by using speed and torque of the stepping motor for the ram blowout preventer. The closed-loop feedback control system of the stepping motor based on the lock of the ram blowout preventer was proposed. To verify the feasibility of the method, the well control equipment was taken as the background of simulation calculation. Experimental results show the technique reliability and practicability.

Key words: ram blowout preventer, lock device, the stepping motor, closed-loop, simulation