In this study, a multiscale finite element analysis coupled with the asymptotic expansion homogenization (AEH) method is employed to investigate the linear thermoelastic behavior of a porous medium. A stochastic method using a mixture of Gaussian functions distribution is used to generate microstructures. The simulated microstructures are produced based on the porosity of a Marcellus shale sample. The AEH method is used to determine the homogenized material properties of simulated random microstructures. A porous medium with material and transport properties that vary between the bedding layers and the matrix is generated. The influence of gas pressure, as well as thermal and mechanical loading on the porous medium is studied and the influence of the pore size and porosity of microstructures on the evolution of stress is investigated.

Press the Back button in your browser, or search again.

Copyright 2018, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.