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Keywords: maximum principal stress
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1447
... technology. Different factors, such as pumping displacement, acid viscosity and initial fracture distribution, were considered in the numerical investigations. The numerical results showed that: 1) the horizontal maximum principal stress was larger than the vertical stress with a main direction along...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0222
... simulation horizontal maximum Reservoir Characterization Engineering maximum principal stress Upstream Oil & Gas tuofutai region principle stress stress value principal stress Petroleum Geology stress field fracture China in-situ stress MPa stress distribution tuofutai area 1 1...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-432
... load, and the decrease of in-situ stress difference hinders the propagation of the fracture; the effects of frequency and elastic modulus on the maximum tensile stress are similar, and both have an optimal value; the smaller the angle between the fracture and the horizontal maximum principal stress...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-099
... pressure, temperature and cavity size will significantly increase the induced maximum principal stress. reservoir geomechanics strength pressurization different internal pressure metals & mining cavity size cavity roof MPa cavity radius internal pressure Upstream Oil & Gas maximum...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1006
... as the maximum shear stresses are analyzed around the flaw tips and along the bridge between the inner flaw tips of the pressurized and non-pressurized flaws. When the specimen is loaded uniaxially, the maximum principal stresses in the bridge between inner flaw tips are tensile near the pressurized flaw...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0139
... of the maximum principal stress to minimum principal stress have been identified as the top three parameters affecting slotting performance. metals & mining coal seam gas flow in porous media coal bed methane complex reservoir Upstream Oil & Gas maximum principal stress orientation...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-161
... normal stress criterion also known as Coulomb s criterion is based on the Maximum normal stress theory. According to this theory failure occurs when the maximum principal stress reaches the ultimate strength of the material for simple tension. Based on this theory, the largest principal stress...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-329
... tendency repulsio tendency repulsion interaction simulation maximum tip upstream oil & gas regularity rig tendency fracture stress half -length maximum principal stress attraction hydraulic fracture fracture hydraulic fracturing propagation newborn fracture node 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-075
... the numerical method. The research is focused on the effect of critical parameters associated with the hydraulic fracturing on the largest principal stress and differential principal stresses in the rock. According to Coulomb’s criterion, failure occurs when the maximum principal stress reaches the ultimate...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7433
.../vertical stress), vacuum (negative pressure), depth and method of extraction on the induced maximum principal stress. It was concluded that increasing internal pressure, cavity length, and depth of cover will significantly increase the induced maximum principal stress around the cavity. Applying negative...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-608
... profile equation 1 assumption elastic property theoretical prediction lateral strain prediction mechanical property stress variation finite element analysis stress ratio Upstream Oil & Gas variation subsurface layer maximum principal stress Poisson principal stress minimum principal...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-129
... the fault has lost its original load because of displacement above the fault; this results in considerably less maximum horizontal stress magnitude than the magnitudes below the fracture zone, where the maximum horizontal stress magnitude is fairly constant [1]. orientation maximum principal stress...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-155
... coefficient concentration coefficient reservoir geomechanics criterion stress state rock mass Reservoir Characterization strength underground excavation rock mass strength engineering area Hoek friction coefficient mass strength maximum principal stress uniaxial compressive strength equation...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-427
... FLAC3D [6]. structural geology support scheme elasto-plastic damage fem Upstream Oil & Gas maximum principal stress stability reservoir geomechanics cavern key point excavation numerical model Reservoir Characterization scheme ii rock mass optimum support elasto-plastic damage...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-596
... different attack angle hydraulic fracturing maximum principal stress normal force linear rock pick performance 1 Pick performance is usually defined in terms of the mean and peak values of cutting and normal forces (FC and FN) and specific energy (Ep). These parameters have been used in the design...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-003
... of an infinite borehole, leak-off test procedures may initiate a horizontal fracture along the bottom of the wellbore before the fracture turns in the direction according to the orientation of maximum principal stress prevailing in the reservoir. INTRODUCTION A precise estimation of the in-situ stress tensor...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-151
... c (1) where 1c is the critical maximum principal stress for the onset of shear failure. Thus, shear slip (and induced seismicity) would be induced whenever the change in maximum principal effective stress exceeds three times the change in minimum principal stress. However, based on the concept...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-211
... reservoir geomechanics co 2 maximum principal stress study area geomechanical stability assessment anticline Williston Basin Craton principal stress vertical stress in-situ stress compressive stress regime 1. INTRODUCTION The main purpose of this paper is to discuss the geomechanical...
Proceedings Papers

Paper presented at the The 34th U.S. Symposium on Rock Mechanics (USRMS), June 28–30, 1993
Paper Number: ARMA-93-0605
... of spec m n o. 2 (P =1.96 MPa, Q =1.57 MPa), it is easy to produce the fractures perpendicular to minimum principal stress directi6n with lesser influence of existence of the slots. However, the fractures perpendicular to maximum principal stress, which initiate at slot tip and extend in both the case...
Proceedings Papers

Paper presented at the The 30th U.S. Symposium on Rock Mechanics (USRMS), June 19–22, 1989
Paper Number: ARMA-89-0877
... in the direction of the maximum principal stress were first reported by Jones, et. al.[7]. Breakouts in the direction of the maximum horizontal principal stress have been observed in friable rocks (e.g., coal seams) only. This paper describes an analysis of wellbore breakouts for boreholes drilled in Alaska...

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