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Keywords: geometry
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1608
... with ‘hanging’ nodes. 1. Introduction The type of problem under consideration is one or more solution mines, generally of an unstructured geometry, situated in either homogeneous salt domes (gulf states in the USA) or in layered media composed of salt or potash layers (Alberta and Saskatchewan, Canada...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1626
... to complete hundreds of stages. One solution to this problem is using simplified hydraulic fracture models, which ignore the finer details of the fracture geometry, capture the dominant behavior of the fracture, run considerably faster and require less computational resources (Dontsov et al., 2019; Dontsov...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-0012
... and complex geometries. Blast modeling using the kinematic approach results in easy model calibration and validation against field measurements and effective applications to practical problems. Using kinematic models of the muckpile formation and the MBF, this paper demonstrates the merits of a kinematic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1631
... in this paper is a semi-analytical solution for linear elastic stress and displacement fields for a noncircular borehole based on complex variable method. To gain a better understanding of the effects of noncircular borehole geometry on borehole stability and hydraulic fracture initiation, a parametric study...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1421
... development degree. Then, the effect of pumping rate and fluid viscosity on the propagation of multiple fractures was studied using the true tri-axial fracturing simulation experimental system, and the geometry of fracture initiation was observed through the distribution of tracers. Results showed that (1...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1145
... ABSTRACT: The present work aims to study the influence of the bit-button geometry on the performance of percussive drilling. Here, we describe the experimental set-up and we present the results of a series of single impact tests performed using a piston drop type percussion testing system...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1146
... is a broadly used method to study the geometry of hydraulic fracture. To date, many fracturing tests have been conducted on various rock such as shales, coals, granites and so on. A few researchers have already studied the effects of natural fractures on hydraulic fracture crossing behavior. Lamont proposed...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2053
... fracturing orientation hydraulic fracture growth geometry fracture Clasificación YPF: No Confidencial ARMA 21 2053 Impact of Wellbore Azimuth on Hydraulic Fracture Growth and Initiation Pressure Chiachiarelli, F.C., Hryb, D.E., Diaz Vazquez, A. and Diaz, E. YPF S.A., Buenos Aires, Argentina Copyright...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1576
... be a decisive variable in the calculation of stability. Currently, there is no consensus on how to incorporate the disturbance zone into a slope stability model though different authors have proposed different geometries for this purpose. This work proposes a method to incorporate the disturbance zone to stress...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1118
.... 1. Introduction The mechanical response of rock pillars is an important issue in underground excavations. The estimation of the strength of a rock pillar is a challenging task because many factors can influence the strength of the pillar, such as pillar geometry, rock mass quality and in-situ...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1131
... can be divided into 4 types depending the geometry of flaws and distinguished by different combinations of wing cracks and secondary cracks. The change of coalescence can be regarded as the combination of the loading conditions and the geometries of the flaws. 1. Introduction The process of crack...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1399
... to CO 2 saturated brine up to one week. The measured elastic moduli show a decreasing trend versus time. This time-dependent modulus was implemented in a user-defined model built into FLAC3D. The features of this model were first tested with a simple geometry. Then wellbore geometry was introduced...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1327
... upstream oil & gas reservoir characterization structural geology pore pressure drawdown depletion co 2 storage reservoir upper reservoir enhanced recovery footing-wall reservoir pore pressure boundary condition active fault scenario simulation geometry reservoir integrity inactive...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1797
... reservoir permanent shape natural fracture transition temperature exposure memory effect high temperature concentration star shape hydraulic fracturing configuration upstream oil & gas particle geometry dahi taleghani smp lcm activation ppa test compression fracture filament ARMA...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2058
... geometry on pressure loss, velocity profile, and geomechanical stresses. Wellbore geometry obtained by caliper logs are used, and computational fluid dynamics studies were conducted on the digitized log data. In addition, geomechanical models were constructed with the different non-circular shape...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1951
... ABSTRACT: Radial water jet drilling (RJD) is a method of enhancing heat recovery by accessing and connecting to high permeable zones within geothermal reservoirs. The wall rock geometry behind an advancing water jet borehole under in-situ conditions is largely unknown. Water jet drilling...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1957
... to determine the geometry of the wormholes resulting from different flow rates. Specifically, the study then focused on the geometry of the wormholes resulting from different flow rates using skeleton analysis and fractal analysis. These analyses showed that higher flow rates resulted in more complex wormholes...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1936
... wellbore MPa horizontal stress difference fracture geometry geometry supercritical carbon dioxide hf geometry completion characteristic Sandstone Formation fracture 1. INTRODUCTION Horizontal drilling and multistage fracturing are two important technologies to develop tight oil resources...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2029
... ABSTRACT: Shear fracture geometry including dilation, roughness, and anisotropy exerts a primary control on fracture permeability. Predictive models of the geometry of shear fracture formation are few, resulting in limited understanding of the permeability of subsurface shear fractures...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0115
... ABSTRACT: Fault surface geometries and their natural textures impose dominant control on the slip potential and characteristics of induced seismicity when triggered by reservoir depletion. In this study, we perform refined re-interpretation of subsurface faults on reflection seismic which...

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