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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-2021-2053
... 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-2021-1131
... 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-2021-1631
... 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-2021-1327
... 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-2021-1118
.... 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 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0240
... observed in different cases due to the fact that different perforations parameters were not properly designed. Fracture geometry is directly influenced by orientations of perforations. The objective of this study is to numerically simulate the hydraulic fracturing lab experiments which were done on 10cm...
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...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0362
... ABSTRACT: The geometry of hydraulic fractures is a major concern, especially in highly fractured reservoirs, once it can severely affect oil productivity. Furthermore, interaction of hydraulic fractures with natural fractures can affect locally the in-situ stress state that may cause slippage...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0484
... out considering rigid blocks. Failed blocks were defined as those blocks that had displaced more than 2 cm and presented velocities indicating that the block was still in movement. This approach allows engineers to define the probability of block failure based on the geometry and weight of failed...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1566
... and stress reorientation. metals & mining elevation contour Reservoir Characterization Upstream Oil & Gas US government discontinuous feature slaker fracture plane reservoir geomechanics roof sag intersection Symposium miner LiDAR application pillar geometry cutter roof...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1574
... assessments where used to solve complex multivariate design problems at operating underground mines. Reservoir Characterization Upstream Oil & Gas assessment Artificial Intelligence Simulation overbreak metals & mining Engineering stability geometry reservoir geomechanics strength...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1563
... for understanding the HFs propagation problem in the field scale. hydraulic fracturing propagation behavior reservoir geomechanics fractured injection well initiation Reservoir Characterization Upstream Oil & Gas injection pressure hf propagation behavior geometry Denote pore pressure minimum...

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