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Keywords: perpendicular
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1784
... ABSTRACT: We observed and modeled the elastic, inelastic and time-dependent viscous properties of damaged Berea Sandstone samples to investigate the impact of damage on the rheological properties of rocks. Cylindrical Berea Sandstone plugs were prepared both parallel and perpendicular...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1157
..., accumulation of irreversible volumetric strain. Typically, tensile fractures need to close completely before compressive stresses are generated in the direction perpendicular to the fracture. One consequence of this approximation in the Mohr-Coulomb model is that when material fails in tension during cyclic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2053
... pressure, several FEM simulations were run using different wellbore orientations. As expected, results show that the best orientation is parallel to the minimum horizontal stress, because in this case hydraulic fractures grow perpendicular to the wellbore. When the well trajectory deviates from...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1854
... and the direction changed. In 1994, Mack and Elbel demonstrated for the first time that production causes the stress around the fracture to decrease over time, and the decrease in the stress component parallel to the fracture is greater than the decrease in the stress component perpendicular to the fracture (Mack...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1903
... orientation shale vertical stress upstream oil & gas symmetry axis poisson reservoir geomechanics pore pressure undrained triaxial compression test sample axis anisotropy skempton perpendicular reservoir characterization bulk modulus orientation deformation draupne caprock undrained...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1980
... properties of shale under various angles between the shear stress and bedding planes are analyzed. The results show that when the shear stress is parallel to shale bedding planes, the internal friction angle and cohesion are significantly smaller than those with shear stress perpendicular to bedding planes...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2103
... Marcellus Shale result comparison perpendicular 1. INTRODUCTION It is critical to capture the properties of the rock as a poroelastic system, under conditions representative of downhole environments, to reduce the uncertainties associated with field development. The success of the experimental data...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2125
... was tested. Experimental results indicated that shale samples perpendicular to bedding exhibited higher strength and rougher fracture surface, resulting in higher unpropped fracture conductivity than samples parallel to bedding. There was not a strong positive relationship between displacement and unpropped...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0144
.... Upstream Oil & Gas mechanical property imprint Reservoir Characterization mechanism Shale Rock orientation boundary fracture anisotropy clay mineral grain boundary pottsville Microstructure pottsville shale structural geology Marcellus Shale indentation test mineral perpendicular...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0442
...-induced matrix swelling. An apparent anisotropic nanopore structure is shown in Illinois coal cut perpendicular to bedding, in which the degree of anisotropy generally increases with increasing pore size. Uniaxial compression perpendicular to the bedding can cause a “two-stage” pore contraction in both...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0483
... perpendicular notch Purdue University 1. INTRODUCTION Understanding the mechanical behavior of layered rock is vital in hydraulic fracturing for the exploitation of shale gas and oil reservoirs. The complex response of shale is, in part, caused by anisotropy from layering within the rock. Anisotropy...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1619
... ABSTRACT: We investigate the case of a hydraulic fracture (HF) propagating perpendicular to the isotropy plane of a transversely isotropic material: a relevant configuration for the growth of HFs in sedimentary rocks where fractures are propagating vertically across layers. We extend...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0104
... perpendicular to the initial hydraulic fracture for growth of branches of secondary fractures at the tip of the initial hydraulic fracture. re-fracturing Simulation pressure distribution hydraulic fracturing depletion numerical simulation stress reversal regime xsite horizontal stress Bakken...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0085
... developed novel laboratory stress application and flow systems/techniques for measuring the effects of a non-hydrostatic stress field (maximum overburden stress orientated perpendicular to sedimentary layering) on storage and transport properties of anisotropic shale formations. Measured pore volume...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0112
... ABSTRACT: We measure acoustic travel-times in Green River shale both parallel and perpendicular to bedding to observe the effects on petrophysical properties of interactions with water (fracture fluids) for different durations. X-ray diffraction shows the samples dominantly comprise carbonate...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0250
... simulation hydraulic fracture propagation bottom layer fracture propagation fluid element propagation rock property stress barrier fracture perpendicular Upstream Oil & Gas fracture containment Cundall Bakken formation Damjanac 1. INTRODUCTION Hydraulic Fracturing, as a reservoir...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-151
... applied perpendicular to the bedding plane (breakdown pressure – 1914 psi). The pyrophyllite sample exhibits a P-wave anisotropy of 18% and displays transverse anisotropy. Acoustic emissions (AE) were recorded using sixteen 1-MHz piezoelectric P-wave transducers; the spatial acoustic emission density...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-217
... Alberta mechanical property constraint pzt wafer arrival time structural geology wavefront shale geophysics Upstream Oil & Gas symmetry axis stiffness pzt element waveform receiver anisotropy determination flat spot perpendicular 1. INTRODUCTION Shale is the most common rock...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-672
... specimen funato Reservoir Characterization orientation diameter sidewall core drilling operation variation MPa Upstream Oil & Gas borehole smin main hole DCDA stress measurement in-situ stress deformation laboratory experiment Magnitude perpendicular 1. INTRODUCTION Geomechanical...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-881
... Oil & Gas assessment operation seismicity injection forecasted microseismic event catalogue fracture pore pressure Earthquake application section 26 catalogue Geophy stress change perpendicular 1 1. INTRODUCTION It is now well-established that under certain geologic conditions...

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