..., and fracture toughness tests, was conducted on samples retrieved from depth from the Buckinghorse Formation. To evaluate the mechanical anisotropy the Formation, samples were tested at 0°, 45°, and 90° with respect to the bedding planes. Transverse isotropy of the mechanical properties is evident...

... with natural fracture intensity. Our physics-based modeling workflow highlighted the importance of treating this as a 3D problem. The modeling also shows the critical roles of horizontal stress anisotropy and vertical distribution of natural fractures within different stacked benches of the Permian basin...

... that provide accurate compressional, shear, and anisotropy from the wellsite using new robust algorithms. A multimode (flexural and Stoneley) physics-based machine learning inversion is used to determine anisotropic constants accounting for mud-speed variations in the borehole to obtain the anisotropic...

... gradient fracture geometry permeability anisotropy URTeC: 3718453 A Multi-Disciplinary Approach to Evaluating Development Strategies in the Marcellus to Address Well Spacing, In-fill Timing and Operational Sequencing Bilu Cherian1; Habib Guerrero2; Richard Pratt2; Tracy Lombardi2; Zach Swanson2...

... characterization upstream oil & gas diagonal half complex reservoir phase velocity hydraulic fracturing lower diagonal half time shift haj nasser fracture half-height fracture fracture density reservoir simulation well toe horizontal stress upper diagonal half stimulation stage anisotropy...

... Abstract Understanding the seismic anisotropy in organic-rich shales is important to quantify the variations of seismic properties with direction and invert for accurate reservoir properties from the seismic data. To characterize the shale anisotropy, we need to measure elastic stiffness...

... lamination bedding bedding reservoir anisotropy lamination bedding oklahoma expulsion reservoir hydrocarbon productivity carlos molinares-blanco hydrocarbon expulsion intensity energy economics shale gas unconventional resource economics woodford shale fracture source rock URTeC: 3726050...

... Abstract This research attempts to evaluate if anisotropy in fracture clustering translates into anisotropy in terms of flow properties. We considered a fractal-fracture model and data that comprise a set of three fracture maps collected from the Devonian sandstone of Hornelen Basin, Norway...

... anisotropy from the wellsite using new robust algorithms. A multimode (flexural and Stoneley) physics-based machine learning inversion is used to determine anisotropic constants accounting for mud speed variations in the borehole to obtain the anisotropic (transverse isotropic) mechanical properties...

... the distribution of crack orientations. Easing the restriction on the crack distribution width facilitates a more realistic representation of crack orientation anisotropy. We applied our model to organic-rich source rocks to quantify physically-meaningful crack properties, including normal-to-tangential compliance...

... seismic survey (Figure 8). Narrow azimuth, short offset seismic data does not properly capture anisotropy inherent in the subsurface. Whereas, full azimuth, long offset data more comprehensively captures azimuthal delay time differences that may be indicative of anisotropy. Processing algorithms can...

... anisotropy have emerged as the most difficult quantities to ascertain. The objective of this study is to investigate the microstructural controls on the effective grain compressibility as measured in the laboratory at close to in situ conditions, with the dual goal of incorporating microstructural...

... fractures. These are interpreted from seismic attributes (anisotropy azimuth, seismic velocity anisotropy) and ant tracking. The UFM model simulates the growth of hydraulic fractures and their interaction with natural fractures in the DFN. Portions of the natural fracture network are assumed to be open...

... results, we categorized the evolution of strain into two major deformation regimes: A (high strain) and B (low strain). The application of these regimes can be extended to other geophysical parameters that are related to pressure, such as Thomsen’s anisotropy parameter, real conductivity, imaginary...

... log analysis complex reservoir machine learning artificial intelligence upstream oil & gas seismic data reservoir characterization shale gas modeling coefficient rock physics model anisotropy variation seismic property toc well logging structural geology avo curve shale...

... rock mechanics geomechanics symposium stiffness coefficient fracture coefficient loading tectonic environment young moduli anisotropy stiffness URTeC: 2466 Anisotropic and Nonlinear Properties of Rock Samples in the Vaca Muerta Formation: Experimental Measurements and Implications...

... and elastic properties). Studies that have examined organic rich shale properties at multiple scales have successfully correlated kerogen content and thermal maturity with acoustic velocities and anisotropy. However, discrete acoustic velocity variations associated with kerogen type and thermal maturity...

... Abstract Acoustic anisotropy and heterogeneity of unconventional formations with ultrasonic slowness and reflectivity images acquired with a newly developed logging-while-drilling (LWD) tool is studied. Conventionally, acoustic anisotropy has been evaluated with dipole or unipole sonic tools...

... of 3 plugs at 3 different angles, and preferably at 0°, 45°, and 90° with the axis of symmetry have to be tested and the stiffness parameters can be inverted (Thomsen 1986). So the existing laboratory test data in Sichuan basin cannot completely characterize the formation anisotropy as only core...

..., the ability to derive static poroelastic anisotropy using only routinely acquired horizontal core plugs for geomechanics testing, as opposed to the more established practice requiring multiple orientated samples, offers considerable advantages: improved predictive accuracy associated with enhanced model...