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66th EAGE Conference & Exhibition
- Conference date: 07 Jun 2004 - 10 Jun 2004
- Location: Paris, France
- Published: 07 June 2004
561 - 562 of 562 results
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Pore Space Deformation Controlled Stress Dependencies of Various Rock Properties
Authors A. Kaselow and S.A. ShapiroP347 PORE SPACE DEFORMATION CONTROLLED STRESS DEPENDENCIES OF VARIOUS ROCK PROPERTIES. AXEL KASELOW and SERGE A. SHAPIRO Institut für Geologische Wissenschaften Fachbereich Geophysik Freie Universität Berlin Malteser Strasse 74-100 12249 Berlin Germany Summary Stress dependencies of elastic moduli and velocities for anisotropic rocks and electrical resistivity are theoretically derived as functions of pore space deformation due to an applied arbitrary load. We show that porosity changes are a funtion of the difference between confining stress/pressure and pore pressure alone if the rock is in the Gassmann limit. All derived stress dependencies have the form of an exponential equation V (P
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Petrofabric Analysis of Seismic Anisotropy in Siliciclastic Sedimentary Rocks
Authors J.S. Maddock, Q.J. Fisher, J.-M. Kendall and G.E. LloydP348 Petrofabric analysis of seismic anisotropy in siliciclastic sedimentary rocks Abstract 1 Factors that control seismic anisotropy in rocks include: oriented fractures or porosity spatial distribution of mineral phases and the crystallographic lattice preferred orientation (LPO) of mineral phases. However the relative importance of each factor in producing seismic anisotropy in any given rock type is often unknown. Using Scanning Electron Microscope-Electron Back Scattered Diffraction (SEM-EBSD) it is possible to determine the crystallographic orientation of mineral phases and hence assess the influence of LPO on seismic anisotropy. The LPO of each constituent mineral are combined and used to derive the
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