RESERVOIR COMPACTION, STRAIN LOCALIZATION AND HYDROMECHANICAL COUPLING
In the constitutive modeling and numerical simulation of mechanical compaction in reservoir mechanics, it is often assumed that the deformation is delocalized so that the possibility of strain localization is ignored. However, recent field and laboratory observations in porous sandstones have documented the pervasive occurrence of compaction localization, and in particular compaction bands have been observed to develop as tabular zones subperpendicular to the maximum compression direction. As a failure mode compaction bands have proved to be very effective in reducing the permeability by orders of magnitude over relativelysmall amount of strain. In this paper we summarize recent advances in our understanding of several questions related to compaction and hydromechanical coupling, specifically (1) constitutive modeling of mechanical compaction and bifurcation analysis of strain localization; (2) influence of compaction and strain localization on permeability; and (3) CT-imaging of compaction band and the micromechanics of compaction localization.
Teng-fong Wong Veronika Vajdova Patrick Baud Laurent Louis
Department of Geosciences and Department of Mechanical Engineering, State University of New York at ReedHycalog, Houston, TX 77011,USA Institute de Physique du Globe, Ecole et Observatoire des Sciences de la Terre, Strasbourg, France Department of Geosciences, State University of New York at Stony Brook,NY 11794-2100, USA
国际会议
南京
英文
25-29
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）