Relationship between the stress sensitivity and pore structure of shale
作者: Zhang WentongWang QingNing ZhengfuZhang RuiHuang LiangCheng Zhilin
作者单位: 1State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China
2Key Laboratory of Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing, China
3SINOPEC Oil Exploration and Development Research Institute, China
刊名: Journal of Natural Gas Science and Engineering, 2018
来源数据库: Elsevier Journal
DOI: 10.1016/j.jngse.2018.09.010
关键词: ShaleStress sensitivityPore structurePore compressibility
原始语种摘要: Abstract(#br)The pore structure of shale changes with variations in the effective stress, greatly affecting the gas production of shale. The relationship between pore structure and stress sensitivity has remained unclear to date. The porosity sensitivity exponent and pore compressibility are two crucial parameters for describing the stress sensitivity and relate to the pore structure of shale. In this study, expressions of the porosity sensitivity exponent and pore compressibility were deduced based on a dual-porosity model. The results show that the scale and quantity of the micro-fractures and matrix pores play an important role in determining the porosity sensitivity exponent and pore compressibility. Regarding the pore structure of shale, a low ratio of the porosity of the matrix...
全文获取路径: Elsevier  (合作)
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关键词翻译
关键词翻译
  • shale 页岩
  • structure 构造
  • sensitivity 灵敏度
  • stress 应力
  • between 在中间