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For problems of shallow gas drainage hole depth, low control precision of drilling trajectory and poor gas drainage effect in soft-fragmentized coal seam Coal Mine, based on the analysis of mine gas geological conditions and existing pre-drainage modes, principle and key technologies of air compound directional drilling technology were introduced for bedding directional drilling construction, and a whole drilling experiment scheme was formulated including design of drilling field and borehole, selection of drilling equipment and assembly and summary of drilling technology requirements. A drilling experiment was carried out in 21608 roadway field.

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Drilling Experiment Research on Bedding Directional Drilling of Soft-Fragmentized Coal Seam Coal Mine

  • 会议论文

  • 发表日期：

    2025年

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  • Shiping Zhao,
  • Jing Sun,
  • Xiaohan Zhu

摘要

For problems of shallow gas drainage hole depth, low control precision of drilling trajectory and poor gas drainage effect in soft-fragmentized coal seam Coal Mine, based on the analysis of mine gas geological conditions and existing pre-drainage modes, principle and key technologies of air compound directional drilling technology were introduced for bedding directional drilling construction, and a whole drilling experiment scheme was formulated including design of drilling field and borehole, selection of drilling equipment and assembly and summary of drilling technology requirements. A drilling experiment was carried out in 21608 roadway field.