TS2.4/EMRP4.5Flow in transforming porous media (co-organized)
|Convener: Renaud Toussaint | Co-Conveners: Daniel Koehn , Andrew Putnis , Piotr Szymczak , Bjørnar Sandnes , Patrick Baud , Fabrizio Balsamo , Jerome Fortin|
The characterization and the understanding of flow properties of rocks and granular media is a major issue in Earth Sciences and Physics, and in many industrial applications including CO2 sequestration, Hydrocarbon migration, geotechnique and soil remediation, ore deposit development, and radioactive waste disposal. One of the main problems is the understanding of fluid flow in transforming porous media, where the rocks and fluid pathways or a soil/water/air mixture evolve spatially and temporally, for example due to interaction with the flow, or due to compaction of the system, or due to chemical reaction between the fluid and the rock. The dynamic feedbacks between flow, destruction of permeability due to compaction or local precipitation, and creation of permeability due to fracturing or decompaction, makes understanding of such systems complex. Such feedbacks between flow of fluids and the porous media (PM) in which they are flowing, are important in both relatively slowly deforming PM such as reservoirs, and in very rapidly evolving porous media such as liquefying fluid-filled soils experiencing earthquakes or rapidly flowing grain-fluid mixtures in debris flows. In this session we welcome contributions from a range of fields including field observations, analytical considerations, numerical models and experiments.
The current session results of a merge with the session:
Strain localization and chemical compaction
Its original description was the following:
Strain localization occurs on all scales, from small
laboratory samples up to crustal fault zones. Since
localized deformation can significantly influence the
stress field, strain partitioning and fluid transport, it is important to have a fundamental understanding of the mechanics of strain localization in rocks. The interplay between overburden-related boundary conditions and rock rheology can be responsible for the development of dilatant (i.e. joints and veins) and/or contractional (i.e. compaction bands and pressure solution seams) strain localization features.
The session aims to identify the microstructural
parameters that control the development and geometric
attributes of strain localization features at various
scales, from field to laboratory and on transport
properties. In particular new experimental techniques for estimating the transport properties of natural media and data interpretations will be analyzed.