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Keywords: criterion
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Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47362-MS
...- axial strain curves for most datasets with acceptable accuracy. However, due to the associated flow rule of the model, it is in general not possible to get a simultaneous good fit to the radial strain data. P. 277 prediction determination criterion polynomial equation axial stress...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47253-MS
... stress spe 47253 magnitude resistance water management pore pressure seismic event coefficient waterflooding upstream oil & gas water injection estimation enhanced recovery shear stress cohesion tectonic earthquake criterion iistric fault reservoir characterization injection...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47251-MS
... Abstract The two most commonly used rock failure criteria in wellbore stability analyses are the Mohr-Coulomb criterion and the Drucker-Prager criterion. Neither of these is compatible with 3-dimensional rock strength measurements that have explored the influence of the intermediate principal...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47333-MS
... of the system make it a powerful tool in optimizing completion design. P. 133 vertical stress sand control prediction upstream oil & gas principal stress simulation sand prediction criterion sand production failure criterion pressure depletion material model simulator reservoir...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47356-MS
.... a fault can be activated or not. P. 231^ overpressure equation coupling upstream oil & gas fluid overpressure invariant relation configuration hydromechanical coupling mechanics interface fluid dynamics spe 47356 criterion flow in porous media reservoir characterization...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47322-MS
... depends strongly on the employed failure criteria. The difference between elasticity and plasticity becomes more pronounced with a criterion which allows the material near the borehole wall to reach a critical plastic strain determined from the calibration tests. In such a case differences from 45% to 80...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47331-MS
... production control onset wellbore design tangential stress drawdown thermal effect stability equation in-situ stress criterion upstream oil & gas wellbore wall mpa production monitoring reservoir surveillance injection flow in porous media reservoir characterization completion...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47581-MS
... criterion gives a valid description of failure in chalk, it is shown that this failure line corresponds to a critical state line for extension. Failure criteria like Drucker Prager that are symmetric around the hydrostatic axis in stress space, cannot give a complete description of chalk behaviour...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47290-MS
... stress reservoir characterization rock mechanics drilling operation reservoir geomechanics gradient circulation inclination upstream oil & gas tampen spur area drilling fluids and materials annular pressure drilling drillstem testing isrm 47290 bratli spe isrm 47290 criterion well...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28052-MS
... and applied so as to model the effective formation of chips into the rock. Automation of the different steps will result in a very useful numerical tool for optimisation in well-boring. scalar indicator mesh spectral band element method criterion sandstone upstream oil & gas localisation...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28075-MS
... series criterion hydraulic fracture drilling fluid chemistry drilling fluid formulation approximation fluid pressure reservoir geomechanics assumption fluid front equation upstream oil & gas coefficient near-tip solution elasticity drilling fluid property fracture toughness fluid...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28127-MS
... hydraulic aperture rock mass review report upstream oil & gas lpg cavern inflow reservoir geomechanics natural gas storage bearing reservoir characterization foliation cavern elevation geological feature criterion major geological feature thermal load PRELIMINARIES The Brazilian...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28104-MS
... of the array can be modelled so its configuration can be optimised. A genetic algorithm is used to steer the search for the optimal array of sensors. Various fitness functions were tested in the genetic algorithm and the minimax criterion was found to be the most satisfactory. target event location...

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