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<p>Natural gas hydrates, with over 90% of their reserves located in deep-sea environments exceeding 800 meters in depth, represent a highly efficient and clean energy source with significant development potential. This has made them a focal point of attention both domestically and internationally. Horizontal well technology, including complex structures based on horizontal wells, will be one of the key technologies for the commercial development of natural gas hydrates in the future. However, drilling horizontal wells within gas hydrate reservoirs presents numerous difficulties and challenges. To address these issues, a self-developed simulation experimental device for horizontal drilling in gas hydrates has been created to conduct laboratory simulations of deepwater hydrate production wells. This research aims to characterize the relationship between hydrate dissociation efficiency and drilling parameters during the drilling process, and to observe wellbore stability under varying formation parameters, providing theoretical foundations and guidance for field applications.</p>

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Experimental Study on the Simulation of Hydrate Decomposition and Collapse Cycles in Deepwater Horizontal Drilling

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • Jianwei Di,
  • Yanfeng Han,
  • Chao Liu,
  • Xinyang Lan,
  • Xiaodong Wu,
  • Jiahao Li,
  • Bin Li

摘要

Natural gas hydrates, with over 90% of their reserves located in deep-sea environments exceeding 800 meters in depth, represent a highly efficient and clean energy source with significant development potential. This has made them a focal point of attention both domestically and internationally. Horizontal well technology, including complex structures based on horizontal wells, will be one of the key technologies for the commercial development of natural gas hydrates in the future. However, drilling horizontal wells within gas hydrate reservoirs presents numerous difficulties and challenges. To address these issues, a self-developed simulation experimental device for horizontal drilling in gas hydrates has been created to conduct laboratory simulations of deepwater hydrate production wells. This research aims to characterize the relationship between hydrate dissociation efficiency and drilling parameters during the drilling process, and to observe wellbore stability under varying formation parameters, providing theoretical foundations and guidance for field applications.