New Method for Evaluating Rock Stress Sensitivity for Low-Permeability Tight Gas Reservoirs
作者: Zhaopeng YangHao YangHeping ChenHongqiang Zhang
作者单位: 1PetroChina Research Institute of Petroleum Exploration Development
2Ministry of Land and Resources China University of Geosciences
3No.7 Oil Production Company of Daqing Oilfield Company Ltd.
刊名: Chemistry and Technology of Fuels and Oils, 2017, Vol.53 (1), pp.68-76
来源数据库: Springer Nature Journal
DOI: 10.1007/s10553-017-0782-x
关键词: Low-permeability tight gas reservoirEffective stressEffective stress coefficientNet confining pressureStress sensitivity coefficient
英文摘要: Conventional methods for determining rock stress sensitivity, in which the confining pressure is varied while the pore pressure is held at a constant level, are not suitable for the conditions in low-permeability tight gas reservoirs. In this work, we have studied an evaluation method that involves varying the pore pressure for constant confining pressure. In order to establish the actual reservoir pressures, we used a method involving simultaneous increase in the confining and pore pressures. We have derived an equation describing the dependence of the gas well productivity on the stress sensitivity of the reservoir and have demonstrated the validity of our model.
原始语种摘要: Conventional methods for determining rock stress sensitivity, in which the confining pressure is varied while the pore pressure is held at a constant level, are not suitable for the conditions in low-permeability tight gas reservoirs. In this work, we have studied an evaluation method that involves varying the pore pressure for constant confining pressure. In order to establish the actual reservoir pressures, we used a method involving simultaneous increase in the confining and pore pressures. We have derived an equation describing the dependence of the gas well productivity on the stress sensitivity of the reservoir and have demonstrated the validity of our model.
全文获取路径: Springer Nature  (合作)
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来源刊物:
影响因子:0.116 (2012)

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关键词翻译
关键词翻译
  • reservoir 贮水池
  • permeability 磁导率
  • coefficient 系数
  • pressure 压力
  • stress 应力
  • sensitivity 灵敏度
  • constant 常数
  • determining 决定的
  • simultaneous 同时的
  • varying 变化的