导向工具是导向钻井系统的核心，是实现井下闭环钻井的关键因素之一。
Steering tools are essential part of steering drilling system and one of key factors for fulfilling downhole closed - loop drilling.
井下随钻测量系统的存储单元是调制式旋转导向钻井系统的关键技术之一。
The storage unit of measurement while drilling system is one of the important parts of rotary steerable drilling tool.
旋转导向钻井工具稳定平台的闭环控制是调制式旋转导向钻井系统的关键。
The closed loop control of the stabilizing platform on the rotary steering drilling system is the key technique of the modulating rotary steering drilling system.
文中详细介绍导向钻井系统在港深24 -26井的应用情况、钻具组合、参数优选，并进行效果分析。
The paper presents the application, bottom hole assembly and parameter optimum of steering drilling system in Gangshen well 24-26. Meanwhile, the applied effect is analysed.
稳定平台单元机械系统的设计是旋转导向钻井工具的关键和难点之一。
Mechanical design of stabilized platform unit is one of the key techniques in the rotary steering drilling tool.
作为井下闭环钻井系统核心部分的下部导向钻具组合的力学特性，则成为形成井下闭环控制的基础。
The steering assembly is the key tool of the downhole closed-loop drilling system, and its mechanics properties are the base of downhole closed-loop control.
用旋转导向系统RSDS进行大位移井钻井，可望相当准确的控制井眼轨迹，大幅度减少钻柱所受的摩阻和扭矩，显著改善井眼的清洁状况。
RSDS will control well path accurately, reduce torque and drag remarkably and improve hole cleaning condition obviously. The drilling practices of ERD will be more reliable if RSDS is used.
用旋转导向系统RSDS进行大位移井钻井，可望相当准确的控制井眼轨迹，大幅度减少钻柱所受的摩阻和扭矩，显著改善井眼的清洁状况。
RSDS will control well path accurately, reduce torque and drag remarkably and improve hole cleaning condition obviously. The drilling practices of ERD will be more reliable if RSDS is used.
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