These system include filtering system for crude oil entering, filtering and cooling system for hot oil, filtering and cooling water circulating system for reduction gearbox of the drillingmotor.
该系统包括原油入口的过滤装置，热油过滤冷却装置和钻井马达变速箱过滤冷却循环装置等三大部分。
2
The power produced by BLDC motor and pump is kind used by rotary steering drilling instrument, which has the characteristic of stabilization and easy controling.
前言： 电机泵动力作为旋转导向钻井工具导向力的一种，有着动力稳定、 可控性好等优点。
3
The reeling out of the drilling line is powered by gravity and reeling in by an electric motor or diesel engine.