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Keywords: strain gage
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Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-319
... by displacement, microfracture initiation, as indicated by strain gages adhered to the specimens. The pore over-pressurization method proves effective for creating tensile fractures in rocks with both milli- and micro-darcy level permeability. Results indicate tensile strengths ranging from 40 to 220 psi (0.3 MPa...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0994
... operation. The FO cable acts essentially as a long continuous ‘strain gage’ in the direction of the cable. As a HF propagates across each FO cable segment it sharply strains each one. This process allows a real time tracking of the position of the growing hydraulic fracture crack tip during testing...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0293
... triaxial amplitude Reservoir Characterization mechanics geomechanics symposium Castlegate sandstone Poisson strain gage frequency measurement Upstream Oil & Gas non-elastic effect stress state Symposium fjær gage strain amplitude strain rate stiffness stress path 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7022
... base for in-situ stress analysis during multi stage hydraulic fracturing and reservoir depletion due to production. reservoir geomechanics flow in porous media Fluid Dynamics variation coefficient strain gage hydraulic fracturing Bakken sample experiment Biot North Dakota procedure...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-387
... strain gage frost Upstream Oil & Gas fiber optically instrumented rock strain sensor pretension production monitoring Alcove strips Ross PVC pipe gage temperature sensor production logging temperature gradient grout rock mass installation 1. INTRODUCTION There is a growing need...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-037
... geomechanics strength borehole borehole displacement orientation borehole strain Upstream Oil & Gas compressive stress tangential strain boundary stress strain measurement displacement borehole wall gage strain gage tangential gage block sample breakout compressive strength indication...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-978
... as for the triaxial tests. The stress rates for triaxial and uniaxial tests are the same. Strain gages were used for thirteen triaxial tests and all the uniaixal tests. Tests in three stress rates of the order of 0.4, 0.04 and 0.004 MPa/s and four confining pressures, 0, 5, 10 and 20 MPa were analyzed. Differential...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-990
... ABSTRACT: A method for calculating convergences in tunnels by means of measuring strains at several points of its contour is described. Either by using electrical resistance strain gages or fiber optics Bragg gratings attached to the steel arches of tunnel support, or bars that may...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0309
... the loaded diameter using strain gages. In addition, total diametral deformations were measured by means of linear variable displacement transformers (LVDTs). The progression of fracture development was evaluated with images acquired using a CCD camera. Crack initiation and development can be readily...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0489
... metals & mining dynamic load computer model strain gage gate assembly particle Load Factor Upstream Oil & Gas control gate assembly chute field test support bolt impact force assembly impact load ore pass static load Itasca Consulting Group particle flow waste rock...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0735
.... Displacements along cross-drift extensometers. 4 STRAIN DATA The CIP concrete liner sections installed over ap- proximately the final 12 m of the HD were instru- mented with strain gages to monitor the concrete be- havior during heating and cooling of the DST. Of this 12-m length, two different types...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0769
...-porosity behavior strain gage fracture matrix conductivity ratio stiffness coupling equation Rock Mechanics, Daemen & Schultz (eds) ¸ 1995 Balkema, Rotterdam. ISBN 90 5410 552 6 On the thermoporoelastic properties of fractured reservoir rocks M. Bai, A. Khan, F. Meng & J.-C. Roegiers...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-129
... Upstream Oil & Gas borehole rock condition host material USBM gage reservoir geomechanics temperature compensation strain value bedding thickness CSIRO cell Reservoir Characterization temperature change longitudinal bedding transverse bedding bedding strain gage gage stress...
Proceedings Papers

Paper presented at the The 30th U.S. Symposium on Rock Mechanics (USRMS), June 19–22, 1989
Paper Number: ARMA-89-0469
... were instrumented with three strain gages 45 degrees apart from each other, to obtain strain distribution on the surface of the coal blocks. One of the gages was mounted parallel to the bedding plane direction, another was mounl. ed at an angle of 45 degrees from the bedding plane direction...
Proceedings Papers

Paper presented at the The 28th U.S. Symposium on Rock Mechanics (USRMS), June 29–July 1, 1987
Paper Number: ARMA-87-1053
... US government Rockwell Hanford Operation Hanford site strain gage geomechanical testing development hydraulic fracturing Reservoir Characterization basalt Richland reservoir geomechanics Upstream Oil & Gas testing program doorstopper determination MPa flat jack test procedure...
Proceedings Papers

Paper presented at the The 26th U.S. Symposium on Rock Mechanics (USRMS), June 26–28, 1985
Paper Number: ARMA-85-0425-1
... on availability, cost, impact on the installation scheme and subsequent mining constraints. The review included proving rings, strain gaged load cells, hydraulic load cells, instrumented bolts by strain gages and vibrating wire strain gages, and two ultrasonic technique. The newly developed vibrating wire...
Proceedings Papers

Paper presented at the The 24th U.S. Symposium on Rock Mechanics (USRMS), June 20–23, 1983
Paper Number: ARMA-83-0371
... pressure cells at each level, and the corresponding strains were monitored with embedded strain gages. Data from each level are compared, and a detailed analysis of rock and concrete behavior at the 5191 ft level is given. The results of the rock displacement and concrete lining stress monitoring have...
Proceedings Papers

Paper presented at the 19th U.S. Symposium on Rock Mechanics (USRMS), May 1–3, 1978
Paper Number: ARMA-78-0135
... displacement scale experiment fault length slip event Upstream Oil & Gas preseismic slip slip occur Dieterich shear stress unstable slip dimension experiment strain gage Conrad inhomogeneity normal stress instability friction experiment scale friction experiment...
Proceedings Papers

Paper presented at the The 18th U.S. Symposium on Rock Mechanics (USRMS), June 22–24, 1977
Paper Number: ARMA-77-0384
... oil shale diameter shale oil tensile stress complex reservoir organic content split cylinder testing tensile strength loading plane Laramie Energy Research Center mechanical property gage Reservoir Characterization Upstream Oil & Gas plane strain gage perpendicular...
Proceedings Papers

Paper presented at the The 14th U.S. Symposium on Rock Mechanics (USRMS), June 11–14, 1972
Paper Number: ARMA-72-0001
... Upstream Oil & Gas grain size gage Reservoir Characterization Rock mechanics Existence stress field principal direction residual strain granite reservoir geomechanics microresidual stress rosette stiffness self-equilibrating unit mechanism strain gage residual strain field...

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