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The Rock Physics Handbook: Tools for Seismic Analysis of Porous Media
TLDR
In this article, the authors present basic tools for elasticity and Hooke's law, effective media, granular media, flow and diffusion, and fluid effects on wave propagation for wave propagation.Abstract:
Preface 1. Basic tools 2. Elasticity and Hooke's law 3. Seismic wave propagation 4. Effective media 5. Granular media 6. Fluid effects on wave propagation 7. Empirical relations 8. Flow and diffusion 9. Electrical properties Appendices.read more
Citations
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Journal ArticleDOI
Empirical relations between elastic wavespeeds and density in the Earth's crust
TL;DR: A compilation of compressional-wave (V p) and shear-wave velocities and densities for a wide variety of common lithologies is used to define new nonlinear, multivalued, and quantitative relations between these properties for the Earth's crust as mentioned in this paper.
Journal ArticleDOI
Physical properties of hydrate-bearing sediments
William F. Waite,J. C. Santamarina,Douglas D. Cortes,Brandon Dugan,David N Espinoza,John T. Germaine,Jaewon Jang,Jongwon Jung,Timothy J. Kneafsey,H. Shin,Kenichi Soga,William J. Winters,Tae Sup Yun +12 more
TL;DR: A review of the current understanding of phenomena involved in gas hydrate formation and the physical properties of hydrate-bearing sediments can be found in this paper, where the magnitudes and interdependencies of these properties are critically important for predicting and quantifying macroscale responses of hydrates to changes in mechanical, thermal, or chemical boundary conditions.
Journal ArticleDOI
Digital rock physics benchmarks-part II: Computing effective properties
Heiko Andrä,Nicolas Combaret,Jack Dvorkin,Erik Glatt,Junehee Han,Matthias Kabel,Youngseuk Keehm,Fabian Krzikalla,Minhui Lee,Claudio Madonna,Mike Marsh,Tapan Mukerji,Erik H. Saenger,Ratnanabha Sain,Nishank Saxena,Sarah Ricker,Andreas Wiegmann,Xin Zhan +17 more
TL;DR: This analysis provides the DRP community with a range of possible outcomes which can be expected depending on the solver and its setup, and falls within the ranges consistent with the relevant laboratory data.
Journal ArticleDOI
The brittle-ductile transition in porous rock: A review
Teng-fong Wong,Patrick Baud +1 more
TL;DR: In this article, Bifurcation analysis can be used in conjunction with a constitutive model to predict the onset of strain localization, which is in qualitative agreement with the laboratory data.
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Computation of linear elastic properties from microtomographic images: Methodology and agreement between theory and experiment
TL;DR: In this article, the elastic properties of the digitized images under dry, water-saturated, and oil -saturated conditions were derived from a suite of four samples of Fontainebleau sandstone with porosities ranging from 7.5% to 22%.
References
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Journal ArticleDOI
Elastic constants of barytes and celestite
TL;DR: The elastic constants of barium sulphate and strontium sulphates are determined using the wedge method and they are determined for the first time.
Proceedings ArticleDOI
Grain Contact Adhesion Hysteresis: A Mechanism For Attenuation of Seismic Waves In Sedimentary Granular Media
Abstract: Attenuation is observed experimentally in dry sedimentary rock samples at low frequency and high overburden stress. Currently well established attenuation mechanisms such as frictional sliding, squirt flow and viscous dissipation can not adequately explain the observed attenuation. We propose a new mechanism for attenuation of seismic waves in sedimentary granular rocks. The origin of this mechanism lies in grain contact adhesion hysteresis. The propagation of seismic waves causes the gap width at grain contacts to vary. At high frequencies Hz), in liquid saturated rocks this leads to attenuation due to squirt flow. However in dry rocks at low frequency Hz) this periodic oscillation in gap width (h) leads to energy dissipation due to hysteresis on a surface force vs. separation distance (h) diagram. The path taken when h is decreasing is different than when h is increasing (grains are being pulled apart). Surface forces and applied load play an important role in the magnitude of the calculated attenuation. The trends obtained from the proposed grain contact adhesion hysteresis mechanism are consistent with experimental observations. We show here that grain contact adhesion hysteresis causes energy dissipation without frictional sliding at grain contacts and gives rise to frequency independent attenuation that increases with strain amplitude and decreases with overburden stress. The conclusions obtained from the calculations are qualitative since they do not account for the complex distribution of asperity sizes and separations that would exist in a rock. However, they provide a qualitative explanation for some hitherto unexplained experimental observations.
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