Volume 46 Issue 2
Apr.  2018
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CAO Yunxing, SHI Bin, TIAN Lin, YANG Xuesong, HE Mao. Optimization and practice of horizontal well azimuth in thick and high dip-angle coalbed in Fukang mining area[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(2): 90-96. DOI: 10.3969/j.issn.1001-1986.2018.02.014
Citation: CAO Yunxing, SHI Bin, TIAN Lin, YANG Xuesong, HE Mao. Optimization and practice of horizontal well azimuth in thick and high dip-angle coalbed in Fukang mining area[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(2): 90-96. DOI: 10.3969/j.issn.1001-1986.2018.02.014
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Optimization and practice of horizontal well azimuth in thick and high dip-angle coalbed in Fukang mining area

  • 1. Engineering Research Center of Coalbed Methane/Gas Geology, Henan Polytechnic University, Jiaozuo 454000, China;

  • 2. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Province, Jiaozuo 454000, China;

  • 3. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;

  • 4. Xinjiang Cleanseed New Energy Co., Ltd, Fukang 831500, China

More Information
  • Received Date: June 05, 2017
  • Published Date: April 24, 2018
    Graphical Abstract
    • Abstract
  • In order to solve the problem of horizontal borehole azimuth in thick and high dip-angle coalbed in Fukang mining area, a comprehensive reservoir modeling and productivity prediction for nine different horizontal borehole trajectory azimuth was completed by using the COMET3. The results show that when the horizontal borehole trajectory was at updip direction, the coal seam strike, the cumulative gas production decreased slightly with increase of the included angle of seam strike and horizontal well trajectory; When the horizontal well trajectory was at downdip direction, the cumulative gas production decreased greatly with increase of the included angle. Research results revealed that the best direction of horizontal borehole should be built up along the coal seam strike or swing at small angle along the coal seam strike. The first horizontal CBM well completed in the west of Fukang mining area has confirmed the technical feasibility of these analyses, and the research results have great guidance and reference significance for optimization technology of CBM efficient development in similar reservoirs of Xinjiang.
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    • References (26)
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