Stress sensitivity of tight reservoirs and its effect on oil saturation: A case study of Lower Cretaceous tight clastic reservoirs in the Hailar Basin, Northeast China
作者: Bo LiuYuqi YangJiangtao LiYaao ChiJunhui LiXiaofei Fu
作者单位: 1Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
2State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu Univerisity of Technology, Chengdu, 610051, China
3Daqing Oilfield of CNPC, Daqing, Heilongjiang, 163318, China
刊名: Journal of Petroleum Science and Engineering, 2020, Vol.184
来源数据库: Elsevier Journal
DOI: 10.1016/j.petrol.2019.106484
关键词: Stress sensitivitySeepage characteristicsPore structureTight oilHailar Basin
英文摘要: Abstract(#br)To analyze stress sensitivity of tight reservoirs and the boundary conditions for oil filling, core samples of tight clastic reservoirs in the Lower Cretaceous Nantun Formation in the Hailar Basin were selected. The measurements include optical observation of thin sections, changes of porosity and permeability under overburden pressure, together with physical simulation experiments of oil filling. The results show that the stress sensitivity coefficient of permeability is a product of two parameters including the power exponent of porosity-permeability and pore compressibility, which reflect the geometric and mechanical characteristics of pores. The stress sensitivity and pore geometry of tight reservoirs of different lithologies vary greatly. Medium-coarse...
全文获取路径: Elsevier  (合作)
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影响因子:0.997 (2012)

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关键词翻译
关键词翻译
  • 中国 灵敏度
  • clastic 碎屑状的
  • Basin 水池
  • saturation 饱和
  • Cretaceous 白垩纪
  • tight 密实的
  • Lower 下部的
  • effect 效应
  • sensitivity 灵敏度
  • China 灵敏度
  • study 学习