Study on the ratio of pore-pressure/stress changes during fluid injection and its implications for CO₂ geologic storage

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• 作者：Seunghee Kim¹ ; ^{seunghee.kim@unl.edu} ; Seyyed Abolfazl Hosseini ; ^{seyyed.hosseini@beg.utexas.edu}
• 关键词：Poroelasticity ; Pore-pressure/stress change ratio ; Induced seismicity ; CO2 geologic storage
• 刊名：Journal of Petroleum Science and Engineering
• 出版年：2017
• 出版时间：20 January 2017
• 年：2017
• 卷：149
• 期：Complete
• 页码：138-150
• 全文大小：1806 K
• 卷排序：149

文摘

We investigate evolution of pore pressure-stress coupled ratio when fluid is injected. Factors like material property, boundary condition and hydraulic barrier are varied. Biot's coefficient and Poisson's ratio determine asymptotic values of the coupling. Boltzmann variable affects the spatio-temporal evolution of the coupled ratio. We suggest methods when evaluating stress paths to determine a injection pressure limit.