... Reservoir Characterization experimental observation shale SINTEF Petroleum Research stiffness s-wave velocity frequency free water Velocity Dispersion rock physics model physics model Upstream Oil & Gas transition porosity shear moduli clay mineral experiment dispersion...

... behavior of unconsolidated shaly sands and shales have been experimentally investigated in this study. Pore pressure cycling measure- ments were conducted to obtain static. and dynamic moduli under true in situ as well as abnormal and depleted reservoir pressure conditions. The measurement technique...

... is simply delayed plasticity is addressed relative to the extent of yielding, stress distribution and displacements. reservoir geomechanics plasticity metals & mining yielding elastic-plastic analysis mesh viscoplasticity elastic limit application moduli Reservoir Characterization...

... geomechanics calibration Balkema moduli Simulation sandstone work-hardening elastoplastic model nonlocal damage model stress-strain curve Reservoir Characterization Rotterdam loading path test data fracture plastic multiplier Rock Mechamcs, Aubert/n, Hassan/ & Mttn (eds) ¸ 1996 Balkema...

... ABSTRACT: This study examines how the petrologic differences between a suite of sandstones and embedded calcareous concretions from Vancouver Island, British Columbia create different fracturing patterns observed in the field. Microscopic examinations, porosity measurements, static moduli...

... ABSTRACT ABSTRACT: A series of uniaxial stress cycling experiments have been performed on dry Berea, Bandera, Boise, Ohio and Pecos sandstones, Carthage, Leuders and Glen Rose limestones and Austin Chalk in order to investigate effects of strain amplitude and stress on the static moduli...

... pulse transmission tests. We found that measured dynamic moduli match initial tangent moduli computed from small-strain, small-stress amplitude cycles executed during a static uniaxial strain test. Further, the nonlinear stress dependence of both P-and S-wave velocities can be reproduced from...

... waste. The data required as input to successful thermal and mechanical models of the behavior of the repository and surrounding lithologies include bulk density, grain density, porosity, compressional and shear wave velocities, elastic moduli, and compressional and tensile strengths. In this study...

... and that the carbonate sequences can be separated into six "mechanical facies", defined by their modulus-porosity trends and their lithology. Poisson's ratio is less sensitive to lithology but correlates with porosity. The dynamic Young's moduli are 15% to 40% higher than the static values. Dynamic and static Poisson's...

... occurs, permanently altering the rocks. Rock properties measured at the laboratory scale constrain the models. Static and dynamic elastic moduli and attenuation as a function of mean stress and strain amplitude are incorporated into forward models to determine particle velocity and displacements and time...