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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-04-502
.../min) solid concentration at the borehole cb 3. SOLID TRANSPORT MODEL 3.1. Model concept and fundamental equations Clifton & Wang [4] modeled the flow of the particles as the particle motion along streamlines Fracture Propagation & Mesh Generation Coupling Analysis (Aperture-Fluid) Stress-Displacement...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-494
..., namely solid grains ( s ), fluidized solids ( fs ), oil fluid ( f ), water ( w ) and gas ( g ). The particle transport and balance equations are written to reflect the interactions among phases in terms of mechanical stresses and hydrodynamics. Constitutive laws (mass generation law, Darcy's law...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-471
... is the difficulty in treating the infinite geothermal reservoir geometry by numerical discretization. However, it has been demonstrated [4] that by using 3D Green's function for heat conduction and the integral equation formulation the need for discretizing the 3D reservoir is completely eliminated. In this paper...
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
... structural geology Biot correspond flow in porous media compressibility reservoir geomechanics viscosity Reservoir Characterization Upstream Oil & Gas constitutive equation Fluid Dynamics platen experiment application strain rate deformation migration Geophy power law...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-497
... the time-dependent processes of fluid diffusion and heat diffusion to mechanical behavior. Constitutive equations for this theory were first introduced by Palciauskas and Domenico [3] by extending the classic Biot s poroelastic theory [4] for the non- isothermal case. This theory was later established...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-467
... in porous media, such as in oil and gas drilling, injection, and production operations. The fully coupled thermoporoelastic equations and solutions for some initial and boundary conditions, and their applications in the petroleum industry, can be found in the literature (Kurashige, 1989 [4]; Wang...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-473
... reservoir geomechanics Upstream Oil & Gas wave velocity elastic wave velocity measurement anisotropic change equation andα 33 model 1 Reservoir Characterization tensor pore pressure sandstone horizontal stress stress field high value contour anisotropy discontinuity 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-04-491
... on the Coulomb law, are calculated. A slip-weakening friction law is implemented to account for crack surface roughness changes with shear displacement. Using a slip-weakening law means no stress singularity exists at the shear crack tip for propagation along the plane of weakness. The governing equations...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-481
... in planning new oil wells. The mathematical technique is to describe the general fracture equations in terms of effective stress ratios, resulting in a fracture criterion, which is independent of the borehole fracture angle. The data are leak-off data from oil wells. They are recorded in wells with different...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-492
..., and capillary pressure of the pore fluid. In addition, we generated a computer program in order to solve two dimensional diffusivity and dynamic pore pressure equations using Darcy s laws simultaneously. Moreover, in this model we included the effects of vibration of drill-string and drilling fluid et impact...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-539
... perforation tunnel penetration theory jet velocity rock response equation 1. INTRODUCTION In cased completions of oil and gas wells the wellbore is connected to the reservoir via perforation tunnels created by explosive shaped charges. The shaped charges are usually loaded into the wellbore inside...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-577
... circulation borehole minimum in-situ stress propagation equation wellbore pressure critical pressure 1. INTRODUCTION Lost circulation during drilling operations continues to be a significant problem in the oil and gas industry. Control and remediation of lost circulation can require large...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-526
... Fluid Dynamics thin plate mass evolution hollow cylinder Reservoir Characterization equilibrium gallery Upstream Oil & Gas transfer process moisture transfer evolution equation flow in porous media thin plate diffusivity experimental data relative humidity saline solution...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-579
... equation ABSTRACT: A key to the success of long-term storage of CO2 in depleted oil or gas reservoirs is the hydraulic integrity of both the geological formations that bound it, and the wellbores that penetrate it. The integrity of this bounding seal system is affected by various mechanical, chemical...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-546
... strain rate compression deformation octahedral profile geomodel prediction equation ARMA/NARMS 04-546 Unified Compaction/Dilation, Strain-Rate Sensitive, Constitutive Model for Rock Mechanics Structural Analysis Applications A.F. Fossum and R.M. Brannon Geomechanics Department,Sandia National...
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
... cylinder non-stationary boundary pressure equation coefficient stress path Boundary Pressure blowout 1. INTRODUCTION One of the dominating methods of oil and gas blowout control is bridging, or wellbore sealing with rock fragments from the collapsing formation [1, 2]. The majority of bridged...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-520
... discontinuity equation plasticity model localized deformation bifurcation geomaterial ARMA/NARMS 04-520 Bifurcation analysis of a three-invariant, isotropic/kinematic hardening cap plasticity model for geomaterials Richard A. Regueiro Materials and Engineering Sciences Center, Sandia National...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-613
... with an angle of along horizontal direction, kx, ky and kxy can be calculated from the following expressions: 22 2 1 sincos kkk x += (5) 22 2 1 cossin kkk y += (6) cossin)( 12 kkk xy = (7) 3. COUPLED FEM MODEL FORMULATION Prior to the formulation of the governing equations, we need to make a few...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-560
... rheology fracture equation strain rate fluid rheology 1. INTRODUCTION Hydraulic fracturing is a strongly coupled process involving fracture initiation/propagation, rock mass deformation, fluid flow and solid particle transport in a fracture, fluid flow in a porous medium and heat transfer. While...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-634
... reduction induced by rock compaction for practical production operations. In the following sections, first, we present the details of the numerical model that include coupled field equations, initial and boundary conditions, constitutive relations, and numerical procedures. Second, the model was verified...

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