通缆钻杆内部流动仿真分析及试验研究  

Simulation Analysis and Experimental Research on Internal Flow of Cable Drill Pipe

作　　者：张晓泽 Zhang Xiaoze(Statc key Laboratory of Gas Disaster Detecting,Preventing and Emergency Cotolling,Chongqing 400039,China;Chongqing Research Institute,China Coal Technology and Engineering Group,Chongqing 400039,China)

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400039 [2]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《煤矿机械》2022年第8期62-65,共4页Coal Mine Machinery

基　　金：中煤科工集团重庆研究院有限公司院自立重点项目(2021 ZDXM15)。

摘　　要：通缆钻杆在定向钻进中主要承担孔内数据传输及高压水传送等作用。为了研究通缆钻杆结构参数对杆体内部流动特性的影响规律,揭示通缆钻杆几何参数与钻杆内部压损曲线的定量关系,阐明通缆钻杆多参数协同设计优化方法,对多种通缆钻杆模型进行仿真分析与试验探究。研究结果表明:相比普通钻杆,通缆钻杆内部旋涡现象更加明显,湍动能损耗加剧,压力损失增大5倍以上;要使通缆钻杆内部压力损失降低,应多参数协同优化,只增大接头内径并不能降低压力损失,反而会使通缆钻杆压力损失增大。该研究结果可为通缆钻杆的优化设计提供一定参考。Cable drill pipes are mainly responsible for data transmission and high-pressure water transmission in the hole in directional drilling. In order to study the influence of the structural parameters of the cable drill pipe on the internal flow characteristics of the drill pipe, reveal the quantitative relationship between the geometric parameters of the cable drill pipe and the internal pressure loss curve of the drill pipe, and clarify the multi-parameter collaborative design optimization method of the cable drill pipe, simulation analysis and experimental investigation were carried out on a variety of cable drill pipe models. The research results show that compared with ordinary drill pipe, the cable drill pipe internal vortex phenomenon is more obvious, the turbulent kinetic energy loss is intensified,and the pressure loss is increased by more than 5 times. In order to reduce the internal pressure loss of cable drill pipe, multiple parameters should be coordinated and optimized. Only increasing the inner diameter of the joint cannot reduce the pressure loss, but will increase the pressure loss of the cable drill pipe. This research results can provide a certain reference for the optimization design of the cable drill pipe.

关 键 词：通缆钻杆 压力损失 接头结构 内部流动 

分 类 号：TD421.25[矿业工程—矿山机电]