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Keywords: borehole diameter
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0093
... of the measured borehole diametrical deformation. One of the key input parameters in this back-analysis method is the borehole convergence. To calculate the convergence, the initially-drilled borehole diameter before deformation is required. The rock mass in the ground is always under stress and a drilled hole...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0355
... principal stress is 0.001% and 0.052%, respectively. The results and errors of the horizontal principal stress inversion are significantly influenced by the measurement deviation of the borehole diameter, the borehole deformation, the wellbore pressure, and the elastic parameters of the rock...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1227
... borehole diameter upstream oil & gas horizontal section casing shoe directional drilling strength original borehole size cavity wellbore gas accumulation wellbore gas accumulation accumulation drilling operation irregular wellbore expansion rate horizontal gas well diameter expansion...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0028
... fracturing gradient elasticity numerical simulation far-field stress interaction borehole diameter crack propagation reservoir geomechanics borehole size cavity expansion test particle system borehole MPa packer ARMA 19 28 Bonded Particle Simulation of Cavity Expansion Test in Rock Fatemeh...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0518
... was negligible. For laboratory conditions, size effects can be very significant. 1 Introduction Reservoir Characterization size effect Lecampion hydraulic fracturing pore pressure hoop stress reservoir geomechanics approximation input parameter borehole diameter Upstream Oil & Gas...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-984
... in salt while drilling salt formations by using constitutive models for estimating borehole diameter. In addition, a parametric analysis is performed to consider the effect of the most important factors affecting salt creep on borehole closure. Finally, general recommendations are provided to well...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-611
...×50 mm) with a 10 mm borehole in the center are loaded until the formation of breakouts. Effects of different factors on the borehole breakout process are evaluated systematically, including the borehole diameter, rock anisotropy and far-field stress conditions. Reduction of borehole diameter...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-504
... borehole diameter fracture wellbore integrity Upstream Oil & Gas shale borehole wall RPM cross section caliper pierre 1 procedure cylinder test flowrate ARMA 11-504 Improved understanding of the effects from drill string RPM in shale through dedicated hollow cylinder laboratory tests...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-827
... ABSTRACT: This study focuses on using borehole fracture traces to estimate the size and aspect ratio of long and narrow subsurface fractures in sedimentary rocks. The method is well suited to fractures with length greater than borehole diameter and width less than borehole diameter, or more...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-191
... reservoir geomechanics Wellbore Design wellbore integrity variation Upstream Oil & Gas diameter machine learning Artificial Intelligence fracture mechanics initial pore pressure breakdown pressure limestone Pco Reservoir Characterization borehole diameter pressurization rate...
Proceedings Papers

Paper presented at the The 22nd U.S. Symposium on Rock Mechanics (USRMS), June 29–July 2, 1981
Paper Number: ARMA-81-0392
...BOREHOLE DIAMETER AS A FACTOR IN BOREHOLE JACK RESULTS Frank S. Shuri Senior Geologist Foundation Sciences, Inc. Portland, Oregon INTRODUCTION The borehole jack was developed by Goodman, et al. (1968) to permit the evaluation of the modulus of deformation of a rock mass from a borehole...
Proceedings Papers

Paper presented at the The 22nd U.S. Symposium on Rock Mechanics (USRMS), June 29–July 2, 1981
Paper Number: ARMA-81-0205
... and varying the borehole diameter from 2.5mm (0.1 in) to 25mm (1 in) in 150 x 150 x 75 mm resin blocks. These tests were devised to determine the degree and type of cracking around the holes for de- coupling ratios between 1 and 10. A similar series of tests to series (a), but using half vented holes formed...
Proceedings Papers

Paper presented at the The 18th U.S. Symposium on Rock Mechanics (USRMS), June 22–24, 1977
Paper Number: ARMA-77-0389
.... No borehole expansion is noted and no crush- ing or rubble was seen in any of the cross sec- tions. The cracks formed by the detonation ex- tend radially outward from the borehole and are generally evenly distributed around it. A few cracks extend out to 12 borehole diameters (76.2 mm, 3 inches). 5B4-2 M P...

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