由中国石油科学研究院机械所研制开发的中国第一台用于7000m井深的PSZ75型液控盘式刹车系统,已在克拉玛依油田完成了1口2490m的生产井。该系统具有以下特点:1.起钻、下钻制动柔性好,刹车力矩大,使钻具停放位置准确,无溜钻现象。下钻时可不用电磁涡流刹车,能够实现钻具快速、减 The first PSZ75 ​​hydraulically operated disc brake system in China, developed by the China National Petroleum Institute of Science and Technology, has completed a 2490-m production well in the Karamay Oilfield. The system has the following characteristics: 1. From the drill, drill down brakes good flexibility, braking torque, drilling rig parked accurately, no slip phenomenon. Drill without electromagnetic eddy current brake, to achieve rapid drilling, reducing