000211183 001__ 211183
000211183 005__ 20181203023949.0
000211183 0247_ $$2doi$$a10.1016/j.jmps.2010.07.014
000211183 022__ $$a0022-5096
000211183 037__ $$aARTICLE
000211183 245__ $$aAdsorption and strain: The CO2-induced swelling of coal
000211183 260__ $$c2010
000211183 269__ $$a2010
000211183 336__ $$aJournal Articles
000211183 520__ $$aEnhanced coal bed methane recovery (ECBM) consists in injecting carbon dioxide in coal bed methane reservoirs in order to facilitate the recovery of the methane. The injected carbon dioxide gets adsorbed at the surface of the coal pores, which causes the coal to swell. This swelling in confined conditions leads to a closure of the coal reservoir cleat system, which hinders further injection. In this work we provide a comprehensive framework to calculate the macroscopic strains induced by adsorption in a porous medium from the molecular level. Using a thermodynamic approach we extend the realm of poromechanics to surface energy and surface stress. We then focus on how the surface stress is modified by adsorption and on how to estimate adsorption behavior with molecular simulations. The developed framework is here applied to the specific case of the swelling of CO2-injected coal, although it is relevant to any problem in which adsorption in a porous medium causes strains. © 2010 Elsevier Ltd. All rights reserved.
000211183 700__ $$aVandamme, M.
000211183 700__ $$aBrochard, L.
000211183 700__ $$0249164$$g258069$$aLecampion, B.
000211183 700__ $$aCoussy, O.
000211183 773__ $$j58$$tJournal of the Mechanics and Physics of Solids$$k10$$q1489-1505
000211183 909C0 $$xU13064$$0252543$$pGEL
000211183 909CO $$particle$$pENAC$$ooai:infoscience.tind.io:211183
000211183 917Z8 $$x249835
000211183 937__ $$aEPFL-ARTICLE-211183
000211183 973__ $$rREVIEWED$$sPUBLISHED$$aOTHER
000211183 980__ $$aARTICLE