无水化致裂增透技术在煤层气开采中的挑战与前景

Challenges and prospects of anhydrous fracturing permeability enhancement technology in coalbed methane extraction

  • 摘要:
    目的 针对深部煤矿煤与瓦斯突出的风险,探讨煤层无水化致裂增透技术在提升安全性与资源回收率方面的应用价值。
    方法 综述国内外煤层无水化致裂增透技术的研究进展,涵盖气体致裂、声波致裂、冷冲击致裂及微生物致裂等技术,分析其工况条件、适用性、优缺点,并结合工程案例,探讨其在瓦斯抽采与煤矿开采中的效果及局限性。
    结果 研究无水化致裂技术在实验和部分实践中表现出显著的增透效果,能够提升瓦斯抽采效率并降低瓦斯灾害风险,但面临高成本、设备复杂、稳定性差及安全性问题,尤其液态CO2和液氮的工程化难度较大,限制了其大规模应用。
    结论 未来应着重降低成本、提升技术安全性和稳定性,推动无水化致裂技术的工程化、智能化发展,并加强技术适应性研究,优化设备与工艺流程,进而实现煤矿安全生产和资源的高效利用。

     

    Abstract: This study explores the application value of non-aqueous fracturing permeability enhancement technology in improving safety and resource recovery for deep coal mines, especially in reducing the risk of coal and gas outbursts. A review of the research progress on non-aqueous fracturing permeability enhancement technologies at home and abroad, covering gas fracturing, acoustic fracturing, cold-shock fracturing, and microbial fracturing. The study analyzes their working conditions, applicability, advantages, and disadvantages, and discusses their performance and limitations in gas extraction and coal mining based on engineering case studies. Non-aqueous fracturing technologies have shown significant permeability enhancement effects in laboratory tests and some practical applications, improving gas extraction efficiency and reducing gas disaster risks. However, challenges such as high costs, complex equipment, poor stability, and safety issues remain, particularly with the engineering challenges posed by liquid CO2 and liquid nitrogen, which limit their large-scale application. Future development should focus on reducing costs, improving safety and stability, promoting the engineering and intelligent development of non-aqueous fracturing technologies, and enhancing research on their adaptability under different coal seam conditions. Optimizing equipment and process workflows will ensure safe coal mine production and efficient resource utilization.

     

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