Stress sensitivity of medium- and high volatile bituminous coal: An experimental study based on nuclear magnetic resonance and permeability-porosity tests
作者: Xin LiXuehai FuP.G. RanjithJiang Xu
作者单位: 1Key Laboratory of CBM Resources and Dynamic Accumulation Process, China University of Mining and Technology, Ministry of Education, Xuzhou, Jiangsu province, 221008, China
2School of Resources & Earth Science, China University of Mining & Technology, Xuzhou, Jiangsu province, 221008, China
3Department of Civil Engineering, Monash University, Melbourne, VIC, 3800, Australia
4School of Civil Engineering, Southeast University, Nanjing, Jiangsu province, 211189, China
刊名: Journal of Petroleum Science and Engineering, 2018
来源数据库: Elsevier Journal
DOI: 10.1016/j.petrol.2018.08.081
关键词: Stress sensitivityCoalbed methaneMedium volatile bituminous coalHigh volatile bituminous coalLow-field nuclear magnetic resonance
原始语种摘要: Abstract(#br)Coalbed methane (CBM) development is in progress in northwestern China, where there are deposits of medium volatile bituminous coal (MVBC) and high volatile bituminous coal (HVBC). Stress sensitivity can lead to low gas-production during CBM development. In this study, three groups of HVBC samples and one group of MVBC samples are applied for low-field nuclear magnetic resonance (LF-NMR) and permeability-porosity tests (P-PT) under confining pressure. Each group contained two cores with similar physical properties, and one is used for LF-NMR and the other for P-PT under confining pressure. The key apertures dominating the reduction of permeability are revealed by comparative analysis of the results of LF-NMR and PP-T under confining pressure. Influences of multiscale pores...
全文获取路径: Elsevier  (合作)
影响因子:0.997 (2012)

  • bituminous 含沥青的
  • volatile 挥发性的
  • porosity 孔隙率
  • resonance 共振
  • experimental 实验的
  • sensitivity 灵敏度
  • permeability 磁导率
  • based 基于
  • magnetic 磁的
  • medium 介质