• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Residuals Science & Technology >Enhanced CMM Drainage with High-pressure Gas Fracturing: A Novel Way to Control Greenhouse Gas Emissions in the Coal Mine
【24h】

Enhanced CMM Drainage with High-pressure Gas Fracturing: A Novel Way to Control Greenhouse Gas Emissions in the Coal Mine

机译：高压瓦斯压裂提高了CMM的排水能力：一种控制煤矿温室气体排放的新方法

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cardox system as one kind of high-pressure fracturing device has a prominent?advantage in security, thus in recent years, this system has been widely applied in increasing permeability of a coal seam. Firstly the system component and its explosive?mechanism are introduced, and the phase change of carbon dioxide is also provided. Secondly, based on research of mechanical characteristics of coal, the crack development?of coal and its stress condition in the process of high-pressure gas fracturing are?analyzed respectively. Through comparison between explosive fracturing and hydraulic?fracturing, it is found that fracturing method can develop many cracks along drilling?radial direction with high permeability, which can benefit methane drainage. Then?from the analysis of drainage results, we found that methane drainage quantity had?been increased by 3–5.2 times after fracturing in crossing borehole, and methane drainage?quantity had been increased by 1.8–3.5 times after fracturing in borehole along the?seam, and the former is better than the later. Finally, this paper proposes a method to?improve Cardox system to meet the requirements of fracturing in the long borehole along coal seam. Besides, the potential danger caused by carbon dioxide of coal seam should?also be taken into account in the future.
机译：Cardox系统作为一种高压压裂装置，在安全性上具有突出的优势，因此，近年来，该系统已被广泛用于增加煤层的渗透性。首先介绍了系统组成及其爆炸机理，并提供了二氧化碳的相变。其次，在研究煤的力学特性的基础上，分别分析了煤在高压瓦斯压裂过程中的裂纹发展及其应力状态。通过对爆炸压裂与水力压裂的比较，发现压裂方法可沿钻探径向产生许多裂缝，且渗透率高，有利于瓦斯抽放。然后，通过对排水结果的分析，我们发现穿越井眼的压裂后瓦斯抽采量增加了3〜5.2倍，沿井眼的压裂后瓦斯抽采量增加了1.8〜3.5倍。接缝，前者要好于后者。最后，提出了一种改进Cardox系统的方法，以满足煤层长井眼压裂的要求。此外，将来还应考虑煤层二氧化碳引起的潜在危险。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号