... digital cores. In order to analyze the impact models, and comprehensively analyzed the effects of the factors of electrical and acoustic properties, a number of various components (e.g., pyrite, clay mineral, organic synthetic digital rocks with various volume fractions of matter, interparticle pores...

... by their elastic stiffness tensor, volume fraction, and aspect ratio. The elastic stiffness tensors of clay minerals are taken from published quantum mechanical calculations. Clay matrix anisotropy varies with the properties of the inter-platelet medium and the assumed properties of the clay platelets. Although...

... ABSTRACT The elastic velocity and anisotropy of shales are significantly affected by the orientation distribution of clay minerals including mica. A lot of research has been done on elastic properties of clay and clay aggregates with varying degree of the platelet preferred orientation...

... ABSTRACT The influences that clay minerals have on tight sandstone elastic behaviors and the interpretation of associated mechanisms remain poorly understood. One of the important reasons for this lack of understanding is that natural tight sandstones have complex mineral compositions...

... Location: 202A (Anaheim Convention Center) Presentation Type: Oral upstream oil & gas poroelasticity skempton porosity coefficient clay mineral annual meeting reservoir characterization biot coefficient pore fluid anisotropic poroelasticity experiment sintef moduli anisotropic...

...: 10:35 AM Location: 360D Presentation Type: ORAL anisotropy modeling sunrise petrosolution tech annual meeting basin simulation seg seg international exposition elastic property flow in porous media simulation clay mineral thomsen reservoir characterization shale effective medium...

... to be homogeneous and isotropic media. Therefore, the use of such relatively simple models when studying shale unconventional reservoirs can lead to an incorrect assessment of the petro-elastic dependencies and distortion of seismic prediction results. All clay minerals included in the composition of shale...

... elastic moduli clay mineral structural geology shale assumption fraction smectite elastic property porosity brine saturation background medium axial stress contact moduli moduli iso-frame value upstream oil & gas reservoir characterization fluid saturation shear modulus...

... pressure clay mineral mineral Modeling anisotropic elasticity Modeling anisotropic elasticity in an unconventional reservoir Mita Sengupta*, Keith Katahara, Nat Smith, Mark Kittridge, and J.P. Blangy, Hess Corporation Summary We present and analyze strongly anisotropic compressional and shear...

... fabric comes from the platy clay minerals, non-spherically shaped kerogen, and their preferred orientation patterns. The method presented in this work include three steps: anisotropic DEM modeling to construct an effective VTI medium; an orientation correction to account for the orientation patterns...

.... An important contribution to shale anisotropy results from the partial alignment of anisotropic plate-like clay minerals. Clay minerals are examples of sheet silicates, and are among the minerals with the highest elastic anisotropy. Because of technical difficulties associated with small grain size, single...

... effective medium (DEM) method to model the effective stiffness of the Haynesville shale by aligning kerogen, platy clay minerals, and embedded pores. The complexity of shale and the uncertainty from both measurements and modeling was addressed by introducing distributions for the shapes and sizes...

... Summary: The origin of porosity and mechanisms of fluid flow at the presence of organic matter and clay minerals in source rocks is poorly understood. Burial and maturation of the source rock affects all types of pore systems in these finegrained rocks. Kerogen decomposition and consequent...

... present different synchrotron X-ray techniques to capture microstructural transformation in Kimmeridge Shale upon temperature-induced maturation. Upon heating to 300 °C, the degrees of all clay minerals fabrics remain fairly consistent and this result supports minor microstructural changes observed...

... size distribution ultrasonic velocity experiment upstream oil & gas shale gas clay platelet powder seg seg denver 2010 clay mineral porosity isotherm pore-size distribution adsorption pore size distribution compacted pellet compaction surface area reservoir characterization...

... provided by the pore space, the clay minerals have clay-bound water that provides counterion conductivity by means of Cation Exchange Capacity (CEC). Crystalline clay platelets are negatively charged and charge-balancing cations, typically Na+, assemble on the surface of dry clay in sufficient numbers...

... ways. The clay minerals are hydrous aluminum silicates and are classified as phyllosilicates, or layer silicates. All layer sil- icates are constructed from two modular units: A sheet of corner-linked tetrahedra and a sheet of edge-linked octa- hedra. These sheets can have different unbalanced layer...

...Clay-Water Interaction, Intermolecular Forces and Acoustic Velocity Ali I. Mese*, Schlumberger Summary All clay minerals exhibit some swelling and the basic swelling process is the same for each mineral. However, the degree of swelling varies greatly from one clay to another. Introduction...

... well logging elastic anisotropy elastic property clay mineral Elastic Anisotropy of Clay Kaushik Bandyopadhyay*, Tiziana Vanorio and Gary Mavko, Stanford University Hans-Rudolf Wenk and Marco Voltolini, University of California, Berkeley Summary Elastic anisotropy of shale is mainly controlled...

...The effect of low aspect ratio pores on the seismic anisotropy of shales Colin M. Sayers*, Schlumberger Summary As a result of the increasing stress that develops during burial, plate-shaped clay minerals in shales tend to align with planes oriented approximately perpendicular to the maximum stress...