Dresden 2011 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 15: ISPS Intersectional Poster Session
DY 15.3: Poster
Tuesday, March 15, 2011, 18:00–20:00, P1
Juggling with geological time scales! — •Philipp Aurin1, Cornelius Fischer1, Julie Murison2, and Matthias Schröter2 — 1Department of Geoscience, Georg-August-University, Göttingen, DE — 2Max Planck Institute for Dynamics and Self-Organization, Göttingen, DE
The investigation of fluid flow through porous media is of great interest to, among others, the petroleum industry. We want to create a model sandstone with selectable but well controlled fluid flow parameters such as porosity and permeability. In this way we can monitor the main steps of diagenesis, compaction and cementation, allowing systematic testing and characterisation of parameters with reduced complexity, all on laboratory time scales.
Compaction - the physical process by which sediments are compressed - is obtained by using water flow pulses and by vertical shaking. Both methods result in the reduction of pore space as grains (soda-lime glass beads) are packed closer together.
The second phase of our experimental protocol consists of calcium carbonate precipitation, which acts as cement between the compacted grains. In-situ observation of the cementation process is obtained using x-ray radiograms. After cementation thin sections of the sample are prepared and lithification quantified using polarizing petrographic microscopy.