EFFECTS OF HETEROGENEITY ON THE MULTIPHYSICS OF FRACTURED ROCKS
The major contribution of this keynote lecture is the development of a digital image based finite element simulation approach to quantify the impact of heterogeneity on the multiphysics of fractured rocks. This approach has provided a powerful and versatile tool to bridge the gap between fine-scale structural details, as revealed by modern material characterization tools such as X-ray CT, and engineering requirements to translate these fine-scale understandings into phenomenological terms suitable for the evaluation of rock macro-behaviors. The uniqueness of this approach is the direct incorporation of a signature function, defined by the color index (such as CT numbers) at pixel scales, into the construction of multiphysics models, the assignment of material properties, the establishment of initial conditions, and the control of constitutive relations for fractured rocks. We first validate the simulation approach against analytical. solutions for a spherical cavity subject to the non-isothermal forced fluid injection, and then demonstrate the impact of local rock heterogeneities on the multiphysical responses through the direct incorporation of X-ray CT measured rock property maps into simulations.
J Liu J C Sheng W C Zhu D Elsworth J X Liu Q L Liao B H Brady
School of Oil and Gas Engineering, The University of Western Australia School of Oil and Gas Engineering, The University of Western Australia Department of Hydropower Engi School of Oil and Gas Engineering, The University of Western Australia Department of Civil and Resou Department of Energy and Geo-environmental Engineering, Penn State University School of Oil and Gas Engineering, The University of Western Australia Institute of Geology and Geop
国际会议
南京
英文
621-637
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）