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Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0074
... in the principal stress space. Therefore, the polyaxial criterion can be defined as a simple relation between maximum and intermediate stresses. We propose to define such an empirical criterion as a second order polynomial which fits trends observed in polyaxial laboratory strength data. INTRODUCTION Knowledge...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0054
... ABSTRACT In 4D Seismics, the dilation factor has become a very interesting rock property in recent years due to its simplicity in linearly relating rock deformation with acoustic velocity variation or time-lapse time shift. Its lab-scale characterization through coupled acoustic-mechanical...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0158
... of packers and sleeves in relation to the reservoir formation strength and sandface flow contributions. The above sanding mechanism and practical ramifications are illustrated through historical sanding responses in 11 horizontal wells in an oil field in the UK North Sea. The reservoir formation...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0211
... in Figure 1. (a) (b) (c) Fig. 1. Fault related issues in nature: (a) Creeping North Anadolu Fault (NAF) at smetpa a (Türkiye) , (b) grounwater inrush in Nakayama Tunnel (Japan) and (c) view of a collapsed semi-underground city in Çat (Türkiye). Many fundamental studies on fracture/shear zones have been...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1932
... for fluids are necessary to achieve an economically feasible operation. complex reservoir aperture hydraulic fracturing relation injection pressure pre-existing fracture waterflooding fracture aperture borehole characterization enhanced recovery upstream oil & gas hydraulic property...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2145
.... production control reservoir geomechanics flow in porous media fluid dynamics production monitoring multiphase flow hydraulic fracturing relation single-phase flow pore pressure masouleh simulation reservoir characterization reservoir surveillance upstream oil & gas two-phase flow...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1124
... predictive estimation of fracture permeability after slip. The proposed relations link fracture length, shear displacement, fracture apertures, hydraulic apertures, and fracture permeability. We consider both fracture creation and the re-activation of existing fractures that have been infilled by minerals...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1108
..., tensile strength, density, brittleness and Cerchar abrasivity index were carried out on a rock specimen. Then relations between measured intact rock properties and measured cutting force via LCM tests were examined. It is found that the intact rock properties could be employed to estimate cutting force...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1098
... properties thus forms an applicable basis for medium characterization. We propose a method to characterize fracture apertures with their stress-dependent flow-elastic relations. The dependencies of various flow and elastic properties in single rough fracture hosting rock, on aperture distribution and normal...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1189
...-specific constitutive equations relating strains to stresses for hydrostatic, uniaxial and triaxial tests and arrange these into a system of equations that are readily inverted for the full set of nonlinear elastic moduli. With measured static third-order elastic constants, geomechanical applications...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1706
... duration shale oil upstream oil & gas reservoir characterization structural geology experiment differential stress creep behavior oil shale mechanics geomechanics symposium specimen creep relation shale rock fracture closure strain rate creep property deformation shale oil reservoir...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0489
... US government stress deformation Reservoir Characterization relation aden area study area variation Upstream Oil & Gas temporal variation Earthquake seismic period spatial variation contribution aftershock Gulf normal fault Red Sea spatial seismicity Magnitude stress...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1981
... wellbore integrity is one of the key challenges. Changes in cement mineralogy and associated mechanical properties may critically affect the integrity of high temperature wells. In this study, the relation between changes in mineralogy and mechanical properties of API class G cement with 40% silica flour...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0246
... in the oil-saturated sample, and even smaller in the brine-saturated sample. It was even smaller in the dry sample. It appears that in the liquid-saturated plugs, the AE level is monotonically related to the acoustic impedance of the pore fluid – the smaller the impedance the higher the AE. It does...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0252
... ABSTRACT: It is well recognized that injecting CO 2 in methane-saturated coal seams can initially decrease the injectivity, followed by a permeability rebound as gas pressure increases. Studies showed that such permeability change is related to the adsorption-deformation coupling which...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0467
... itself, but have little effect on those in the farther strata. Upstream Oil & Gas reservoir geomechanics Reservoir Characterization relation pore pressure finite fault network orientation heterogeneity Artificial Intelligence geometric model contact surface situ stress calculation...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-264
... ABSTRACT: The mechanical behavior of Zhenping marble is studied using the lattice-spring-based synthetic rock mass (LS-SRM) modeling approach. Mechanical response of the rock is assessed using stress–strain relations under unconfined and confined compressions. ITASCA's SRMTools is used...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-825
.... Reservoir Characterization production logging flow test production control equation of state relation flow rate specimen time-invariant flow rate transport-controlled dissolution injection flow rate effluent concentration fluid modeling production monitoring structural geology Einstein...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0696
... (1983) proposed a famous empirical rate- and state- dependent friction (RSF) law. This law could well describe the variation of rock friction as observed in the slide-hold-slide direct shear test. Since, then a large number of researches related to the earthquake s occurrences were conducted based...

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