Author:
Schmidt Patrick,Steeb Holger,Renner Jörg
Abstract
AbstractHydro-mechanically induced transient changes in fracture volume elude an analysis of pressure and flow rate transients by conventional diffusion-based models. We used a previously developed fully coupled, inherently non-linear numerical simulation model to demonstrate that harmonic hydraulic excitation of fractures leads to systematic overtones in the response spectrum that can thus be used as a diagnostic criterion for hydro-mechanical interaction. The examination of response spectra, obtained from harmonic testing at four different field sites, for the occurrence of overtones confirmed their potential for the hydro-mechanical characterization of tested reservoirs. A non-dimensional analysis identified relative aperture change as the critical system parameter.
Funder
Bundesministerium für Bildung und Forschung
Deutsche Forschungsgemeinschaft
Ruhr-Universität Bochum
Publisher
Springer Science and Business Media LLC
Subject
Geochemistry and Petrology,Geophysics
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