Motion simulation analysis and experimental verification of drill string rotation controller

IF 2.6 3区 工程技术 Q3 ENERGY & FUELS Journal of Energy Resources Technology-transactions of The Asme Pub Date : 2023-07-04 DOI:10.1115/1.4062890
Jialin Tian, Haolin Song, Yinglin Yang, Lanhui Mao
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Abstract

Conventional directional drilling mainly relies on the sliding of screw motor and drill string to realize the change of wellbore trajectory, so the friction force is large. The use of friction reduction tools that generate axial force to change the friction state can only achieve partial friction reduction, and drill string is still in a sliding state during directional drilling. These problems are solved by using rotary steerable drilling system, which can achieve directional drilling when drill string rotates. But its use cost is high. Considering the principle of high efficiency and economy, a new friction reduction tool called drill string rotation controller is proposed, which is also used to reduce friction during directional drilling through drill string rotation. By adjusting the pump pressure, the meshing state of spline module of drill string rotation controller is changed to realize the conversion of drilling mode. In rotary drilling mode, upper drill string, drill string rotation controller and bottom hole assembly rotate together. In directional drilling mode, upper drill string rotates and drill string rotation controller slides with bottom hole assembly. The function of the tool is verified by field experiment, and motion simulation of the tool is carried out. The results show that when the driving torque is set to 25000 N·m, more reverse torque can be overcome in the directional drilling mode, and the drilling fluid pressure is set to 25 MPa, which can be converted to the rotary drilling mode faster.
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钻柱旋转控制器的运动仿真分析与实验验证
常规定向钻井主要依靠螺杆马达和钻柱的滑动来实现井筒轨迹的改变,因此摩擦力较大。使用产生轴向力来改变摩擦状态的减摩工具只能实现部分减摩,定向钻井时钻柱仍处于滑动状态。这些问题都是通过使用旋转导向钻井系统来解决的,该系统可以在钻柱旋转时实现定向钻井。但是它的使用成本很高。考虑到高效经济的原理,提出了一种新型的减摩工具——钻柱旋转控制器,它也用于通过钻柱旋转来减少定向钻井过程中的摩擦。通过调节泵压,改变钻柱旋转控制器花键模块的啮合状态,实现钻井模式的转换。在旋转钻井模式下,上部钻柱、钻柱旋转控制器和底部钻具组合一起旋转。在定向钻井模式下,上部钻柱旋转,钻柱旋转控制器与底部钻具组合滑动。通过现场实验验证了该刀具的功能,并对该刀具进行了运动仿真。结果表明,当驱动扭矩设定为25000 N·m时,定向钻井模式可以克服更多的反向扭矩,钻井液压力设定为25 MPa,可以更快地转换为旋转钻井模式。
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来源期刊
CiteScore
6.40
自引率
30.00%
发文量
213
审稿时长
4.5 months
期刊介绍: Specific areas of importance including, but not limited to: Fundamentals of thermodynamics such as energy, entropy and exergy, laws of thermodynamics; Thermoeconomics; Alternative and renewable energy sources; Internal combustion engines; (Geo) thermal energy storage and conversion systems; Fundamental combustion of fuels; Energy resource recovery from biomass and solid wastes; Carbon capture; Land and offshore wells drilling; Production and reservoir engineering;, Economics of energy resource exploitation
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