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Keywords: experiment
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Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-489
... dimension Mansfield sandstone borehole wall reservoir geomechanics experiment specimen Upstream Oil & Gas porosity grain contact Reservoir Characterization borehole breakout sandstone far-field stress fracture-like breakout far-field state breakout length breakout tip stress...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-503
... ABSTRACT: The Swedish Nuclear Fuel and Waste Management Co. is carrying out the Äspö Pillar Stability Experiment at the 450-m-level of the Äspö Hard Rock Laboratory. The major objectives of this experiment are to demonstrate our understanding of brittle failure (spalling) in a fractured rock...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-490
... volume content (fluid volumetric strain) to the total composite volumetric strain (drained experiment). Then, it is easy to show that: )( 1212 1 2 111 2 001 O )r,rU(P )r,rU(P , (9) where denotes porosity. The above function, along with the experimentally determined values of Biot's constant [12...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-484
... determined. 3. EXPERIMENTAL PROGRAM Borehole breakout experiments on pre-stressed rock specimens were conducted with the University of Wisconsin specially built apparatus, consisting of a vertical loading frame, a biaxial load cell, and an electric borehole drilling rig (Figures 2 and 3). The procedures for...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-468
... hydraulic fracture analysis and design. This has motivated some recent contributions. Experimental work has focused on field and laboratory scale hydraulic fracture in soils [5,6,7]. ARMA/NARMS 04-468 Toughness-dominated Near-surface Hydraulic Fracture Experiments Andrew P. Bunger and Robert G. Jeffrey...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-454
... triaxial shear experiments (6 experiments in total, using different confining pressures). The experiments were performed on core plugs taken from a block of Salt Wash South sandstone. Figure 2 illustrates the experimental data and the model calibration where the peak strength, pre- failure stiffness...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-568
... the main characteristics of the experimental results in which permeability changes with both stress and strain follow a similar constitutive model as deformation for a weak sandstone sample and an unconsolidated sand samples. Although laboratory experiments on the stress dependency of porosity and...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-527
... Reservoir Characterization Upstream Oil & Gas experiment thermoporoelastic model Wellbore Design prediction MPa fracture gradient Temperature Effect Magnitude wellbore integrity initiation Leak drilling fluid temperature mud temperature wellbore temperature proceedings...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-581
... cylinders with holes of various geometries have been studied experimentally and analyzed numerically. Experiments on specimens with cylindrical holes and holes with pre-cut elliptical, convex or concave breakouts of various depths showed that the elliptical breakouts are a more stable structure in terms of...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-541
... effective stress at the inner boundary, much lower radial stresses are predicted (2-5 % of the maximum pressure drop). This coincides with our actual experiments, where rock failure was observed only with initial stresses already close to the failure envelope. In other words, the experimental observations...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-589
... Reservoir Characterization compressibility pore pressure compaction consequence stress path overburden reservoir geomechanics Reservoir Compaction pore compressibility sandstone elastic limit permeability depletion Upstream Oil & Gas experiment stress path coefficient...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-543
... Reservoir Characterization experimental observation shale SINTEF Petroleum Research stiffness s-wave velocity frequency free water Velocity Dispersion rock physics model physics model Upstream Oil & Gas transition porosity shear moduli clay mineral experiment dispersion...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-544
... by the intergranular bond strength and stiffness. In this study we aim at providing guidance for choosing these numerical parameters by performing experiments on a controlled granular material. 2. EXPERIMENTAL SETUP The numerical model is based on spherical particles which can be cemented with a bond...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0033
... bit selection drilling operation bit design oscillation torque coupling RPM regime rotation bit-rock interaction law cleaning Upstream Oil & Gas correspond coefficient stick-slip vibration interaction stick-slip oscillation experiment torsional vibration vibration...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0083
... Upstream Oil & Gas Taiwan core barrel lugeon test experiment pressuremeter structural geology triaxial cell borehole Reservoir Characterization unload-reload loop loading surface disturbance rock specimen test site shear modulus geomaterial specimen soft rock sandstone...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0041
... Upstream Oil & Gas fracture process incremental load specimen interface wedge angle fringe penetration hydraulic fracturing holographic interferometry strength mechanism khair experiment University holography indentor Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0327
... seismic source Upstream Oil & Gas experiment low intensity damage mechanism ejection velocity accelerometer seismic effect diameter rockburst experiment maximum velocity South Africa tunnel milev rockburst Reservoir Characterization sidewall peak particle velocity simulated...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0295
... experiment enlarged cavity flowrate Magnitude perforation head difference Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (edsj© 2000 Ba/lrema, Rotterdam, ISBN 90 5809 155 4 Strong support for significant productivity boost through sand production H. H. Vaziri & L. Lemoine Department of Civil...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0213
... ABSTRACT ABSTRACT: We present meso-scale modeling of impact recovery experiments on sandstone using a hybrid Smooth Particle Hydrodynamic (SPH) and Discrete Element Method (DEM) approach. Each grain is represented with clusters of particles providing explicit representation of the grain/pore...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0303
... over time, at least for the experimental time at each fluid flow rate, which was approximately 25 min. Thus, the experi- mental results do not show clear evidence of tran- sient sand production, which diminishes after an ini- tial sand production phase. The sand rate appears to be unaffected by the...

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