报告题目：Multiscale and Multimechanistic Flows in Tight Shales

报告人:                        Dr. Shimin Liu

Energy and Mineral Engineering at Penn State University

时间：2015年6月18日 (周四)   10：00                         

地点：中国科学院力学研究所主楼344会议室

报告摘要：

This talk starts with a brief backdrop and introduction for outlining the issues encompassing gas shale formation and production, including gas shales and how they originate; unique characteristics of shale reservoir; development techniques; and the position shale gas serves in meeting our current and future national energy requirements. Studies completed recently have shown that the nature of flow in ultra-tight shale is multi-mechanistical processes, including sorption, diffusion, slip flow, advection and flow-induced micro-structuring. The desorption of methane results in a change in the matrix volume of shale thus altering the permeability of, and production rates from, gas shale reservoirs. Accurate estimations of different flow components are, therefore, critical in gas shale operations in order to model and project gas production rates. Furthermore, the flow-induced matrix micro-structuring is important for mapping the pore network evolution during the gas depletion which will dynamically influence the permeability of shale. The concept of multimechanistic flow helps in understanding the unique feature of gas shale production with long persistent production tail. Finally, if time permits, I will briefly discuss the ongoing project focusing on geodynamics during shale depletion.  

报告人简介：

Dr. Shimin Liu is an Assistant Professor in the Department of Energy and Mineral Engineering at Penn State University. He obtained his Ph.D. from Southern Illinois University at Carbondale. His research interests include flow of fluids in porous media (with application to gas flow in coal/shale, coalbed methane reservoir engineering, gas shale reservoir engineering, carbon sequestration in geologic media and abandoned coal mines); imaging (micro-X-ray computed tomography, synchrotron X-ray scattering, neutron scattering/diffracting, scanning/transmission electron microcopy) and analysis to study physical structure of rocks; flow-induced micro-structuring of rocks; geomechanical responses of unconventional reservoirs with depletion. Currently, he has served as PI and co-PI for NSF and DOE projects on such topics and has published 14 peer-reviewed journal papers in this area and established professional communications with related research groups, such as Oak Ridge National Laboratory, Sandia National Laboratory, PA Geological Survey and PA Department of Conservation and Natural Resources (DCNR). After he joined Penn State, he has established a multi-scale rock mechanics and fluid dynamics characterization lab.

报告联系人：沈楠  (office@lnm.imech.ac.cn 82543935)