基于水力压裂下脉冲放电技术的煤层气开采应用研究

Application of pulse discharge technology in coalbed methane exploitation based on hydraulic fracturing

煤层气以甲烷为主要成分赋存于煤岩中,是非常宝贵的自然资源,对其开采也可以降低瓦斯灾害风险。我国煤层气储量巨大,开发前景可观,合理的开采手段已成为相关机构研究的热点。水力压裂技术具有成本低、范围广等优点,但在煤层气开采方面尚属初步发展阶段,单纯的水压致裂暂时无法满足实际工程需求。本文主要探讨在水压致裂的基础上加以高压脉冲放电,施加高能脉冲载荷,利用其强力冲击振动效应来实现致裂增隙,从而提高煤层气开采效率。该研究符合煤层气开采技术的总体发展方向,在能源供应和能源安全方面提供了新的思路和参考,对改善能源结构具有较强的现实意义和应用价值。

Coalbed methane as the main component occurs in coal and rock as a very valuable natural resource, its mining can reduce the risk of gas disasters. Coalbed methane in China reserves are huge, and the development prospect is considerable. The reasonable mining method has become a hot research topic of relevant institutions. Hydraulic fracturing technology has the advantages of low cost and wide range, but it is still a preliminary stage of development in coalbed methane mining, and simple hydraulic fracturing can not meet the actual engineering needs temporarily. This paper mainly discusses the high voltage pulse discharge on the basis of hydraulic fracturing, applying high energy pulse load and using its strong impact vibration effect to realize fracturing and increase gap, so as to improve the efficiency of coalbed methane mining. This study conforms to the overall development direction of coalbed methane mining technology, provides new ideas and references in energy supply and energy security, and has strong practical significance and application value for improving energy structure.