钻柱对地面钻孔EM-MWD信号传输影响的ANSYS模拟分析

邵春, 付信信, 张杰

邵春, 付信信, 张杰. 钻柱对地面钻孔EM-MWD信号传输影响的ANSYS模拟分析[J]. 煤田地质与勘探, 2016, 44(3): 128-131. DOI: 10.3969/j.issn.1001-1986.2016.03.025
引用本文: 邵春, 付信信, 张杰. 钻柱对地面钻孔EM-MWD信号传输影响的ANSYS模拟分析[J]. 煤田地质与勘探, 2016, 44(3): 128-131. DOI: 10.3969/j.issn.1001-1986.2016.03.025
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SHAO Chun, FU Xinxin, ZHANG Jie. ANSYS simulation analysis on the influence of drill string on EM-MWD signal transmission of surface borehole[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(3): 128-131. DOI: 10.3969/j.issn.1001-1986.2016.03.025
Citation: SHAO Chun, FU Xinxin, ZHANG Jie. ANSYS simulation analysis on the influence of drill string on EM-MWD signal transmission of surface borehole[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(3): 128-131. DOI: 10.3969/j.issn.1001-1986.2016.03.025
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钻柱对地面钻孔EM-MWD信号传输影响的ANSYS模拟分析

  • 1. 中国地质大学(武汉)资源学院, 湖北 武汉 430074;

  • 2. 中煤科工集团西安研究院有限公司, 陕西 西安 710077

详细信息
    作者简介:

    邵春(1972-),男,副教授,博士研究生,从事随钻测量技术研究.E-mail:shaochun_74@163.com

  • 中图分类号: TE243

ANSYS simulation analysis on the influence of drill string on EM-MWD signal transmission of surface borehole

  • 1. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;

  • 2. China Coal Xi'an Research lnstitute, Technology and Engineering Group Xi'an 710077, China

摘要

    摘要
  • 摘要: 钻柱是电磁波随钻测量（EM-MWD）信号传输的重要信道，评价EM-MWD信号传输效果，不可忽视钻柱的影响。基于此，采用ANSYS有限元软件，对EM-MWD信号传输特性进行仿真。从地面接收电压和电流密度两方面，分析了孔眼环空横截面积、钻柱横截面积、钻柱电阻率和绝缘短节位置对电磁波随钻测量信号传输的影响规律。仿真结果表明：地面接收信号随钻柱横截面积增大而增强，受孔眼环空间隙影响小；钻柱电阻率越低，接收信号越强；绝缘短节与钻头之间的距离越长，接收信号越强。
    Abstract: Drill-string is the important channel of EM-MWD (Electromagnetic measurement while drilling) signal transmission. The influence of drill-string can not be ignored when evaluating the transmission effect of EM-MWD signal transmission. Therefore, the finite element method is employed to simulate the characteristics of EM-MWD signal transmission. To analyze the influence laws of factor on EM-MWD signal transmission, which includes the cross-sectional area of annulus, the cross-sectional area of drill-string, the resistivity of drill-string and insulation nipple position through ground current density and ground receiver voltage. The simulation results show that signal intensity will be increased with the increase of drill-string cross-sectional area and the distance between drill bit and insulation nipple, but has nothing to do with annulus cross-sectional area. Signal intensity will be increased with the drill-string resistivity.
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出版历程
  • 收稿日期:  2015-10-14
  • 网络出版日期:  2021-10-22

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