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Keywords: assembly
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0497
... ‘Caged Geothermal Systems’ (CGS), we inject fluid into a repeatably constructed assembly of two aluminum wedges bonded by plaster while the embedded fault is held at a critical stress condition for shear-slip. Meanwhile, fluid production is enabled using a five-spot pattern of pre-drilled boundary wells...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0561
... the principle with which the core expand radially in an elastic manner as it is relieved from the in-situ stresses. We developed a downhole assembly to realize DBC which contains small and large diameter bits. A core sample is cut out in three stages with changing those two bits. We developed another downhole...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0050
... to avoid the casing entering the plastic deformation state during the running process. Hydraulic parameters and vibration effects shall be fully considered during the design of drilling tool assembly to realize safe drilling. The research and field implementation progress show that the key technology...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0763
... systems and equipment rss united states government lateral section assembly rss system directional system oklahoma drilling time horizontal well cbh system drilling operation vertical section md-rss individual run reservoir geomechanics rop rotary steerable system caney shale drilling...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0880
... angle bentonite glass fiber reinforcement cohesion simple shear test kpa normalized shear stress shear strength parameter assembly ARMA 23 880 Evaluation of Shearing Behavior of Inorganic Microfiber-Reinforced Bentonite for Engineered Barrier Materials Jose Maria Ferdinand Calaunan, Yuan...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1968
... to failure if the high pore pressure depletion from production imparts excessive compaction strain on the completion assembly. We hypothesize that compaction-induced sand production failure is the result of a buckling mechanism where a large amount of stress and strain is exerted along the most slender...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1208
... ABSTRACT: Bonded-particle models (BPMs) provide a synthetic material consisting of a packed assembly of rigid grains joined by deformable and breakable cement at grain-grain contacts, and whose mechanical behavior is simulated by the distinct-element method. Contact- and parallel-bonded PFC2D...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-110
... and cooling of a downscaled casing-cement-rock assembly. Tensile failure was predicted during thermal cycling of the casing-cement-rock assembly at both heating and cooling stages. The failure occurred predominantly in damaged cement and damaged rock. The simulation results suggested that cement immediately...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-647
... various loading conditions. Initially, aggregates of five different shapes and four different sizes, assembled at a certain volume ratio, were subjected to compression tests under constant confining pressure. The results indicated that: (i) cracks initiate more easily in larger particles...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-657
... design wellbore cement cement property assembly wellbore integrity compaction cement slurry expansion cone porosity permeability upstream oil & gas reduction mechanical property cement chemistry composite sample hardness pipe expansion fixture post expansion cement formulation...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-790
... the experimental PSD, without any idealization have been also discussed [5]. upstream oil & gas pore size distribution psd information porous material mercury intrusion specimen diameter apparent permeability prediction klinkenberg coefficient random assembly flow in porous media...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7626
... Abstract This paper presents a multi-scale lattice Boltzmann/finite element scheme that quantitatively links particulate mechanics to hydraulic properties of a grain assembly obtained from a simple shear discrete element simulation. A spatial homogenization is performed to recover...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7751
... cavitation experiment restriction plate investigation penetration rate cuttings transport drilling fluids and materials frequency Simulation Usgpm assembly drilling system axial compliance prototype vibration ARMA 14-7751 Investigation of Enhancing Drill cuttings Cleaning and Penetration...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7108
... Abstract The paper presents preliminary results of the ongoing experimental study of stick-slip, a mode of torsional vibrations of drilling assembly using drag bits. These experimental results are in agreement with a recent theoretical paper on stickslip that concludes that the main driving...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-495
... Abstract: This paper deals with self-excited axial vibrations of a drilling assembly. In particular, an analytical model of self-exited axial vibration that accounts for regenerative effect is presented. The paper also introduces a state-of-the-art laboratory drilling equipment dubbed ASPEN...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-348
... Methods (DEM) are better suited to capture the loss of compression and shear strength with particle crushing. In DEM, a Representative Elementary Volume typically contains several thousands of particles, which involves high computational costs. In all of these approaches, the assembly of grains...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-621
... ABSTRACT: The process of fluid injection into dense granular media is analyzed using the DEM code PFC2D ® coupled with a pore network scheme. A simple approach to calibrate the microscale parameters to match the permeability of a particle assembly, predicted from the Kozeny-Carman...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-647
... of the fracture network. Further insights into the mechanisms of the induced fracturing is provided by the use of Synthetic Rock Mass (SRM) numerical models that reproduce the nature of the rock and the stress conditions imposed by the engineering. The rock mass is reproduced by an assembly of bonded particles...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-305
... porous rock materials and to result in representative peak-loading behavior for the aggregate sample. Uniaxial compression and Brazilian tests were numerically performed on granular assemblies with rock-like properties. INTRODUCTION Experimental testing of rocks under various loading conditions...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-400
...”, in order to reproduce the results obtained in the field. 2. BACKGROUND Potyondy and Cundall (2004) showed that the mechanical behavior of a rock can be conceptually represented as a cemented granular assembly; where both the grain and the cement can deform and may eventually fail. They proposed...

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