1-20 of 65
Keywords: discretization
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203979-MS
... & Younis (2021) , this is not considered in the present work. Furthermore, the improved spatial discretization of the fluid flow equations proposed in Jiang et al. (2016) is applied. The temporal discretization is treated using implicit time stepping via Newmark's method. The weak form...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203949-MS
... effects. These two challenges are at the center of the present paper. We describe in detail the steps of our workflow to prepare and run a large-scale unstructured simulation of a real field case with faults. We perform the simulation using four different discretization schemes, including the cell...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203958-MS
... gridding techniques, or enhancing the variables (degrees-of-freedom) that represent the physics in order to describe the behavior of fractured formation accurately. The objective of this study is to develop a spatial discretization scheme that cuts the "matrix" grid with fracture planes and utilizes...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203961-MS
... delaunay triangulation convergence machine learning upstream oil & gas discretization tpfa transmissibility truncation error artificial intelligence fluid dynamics voronoi grid grid quality measure strata local approximation permeability grid flow in porous media approximation spe...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193858-MS
... wave propagation traction hydraulic fracturing discretization discontinuity finite element method Simulation contact problem fracture Lagrange multiplier displacement field Newton update displacement variation equation Microseisms detected in typical hydraulic-fracture-monitoring...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193932-MS
... discretization simulator operator value equation From the perspective of simulation nonlinear loop, the operators’ interpolation replaces properties calculation in the Jacobian assembly step. In addition, it also ‘shadows’ physical phenomena behind the operators, leaving out only the values...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193922-MS
.... The variables ν and p in Eqs. 1a through 1d represent velocity and pressure. We will not discuss the boundary conditions for the CHNS problem in this paper. We refer the interested reader to the publication of Frank et al. (2018b) . Eqs. 1a through 1c are discretized in time using...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193934-MS
... strategy. Let u n denote the vector of m primary variables at time t n . Using a backward Euler temporal discretization, we write the residual equation for component c on semi-discrete form as where Δ t = t n +1 − t n is the time step, A c denotes accumulation, F c flux, and Q c...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182690-MS
... the newly developed virtual element method (VEM) for mechanics on polyhedral grids, we show how geomechanics simulations on corner-point grids can be coupled with traditional discretizations (and solvers) used in black-oil and compositional simulators. The new VEM method can be seen as an extension...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182607-MS
... balance equations are discretized by use of a flexible discontinuous Galerkin (DG) method. The discretization of the mass balance equation is semi-implicit in time; momentum balance equation is discretized with a fully-implicit scheme, while both equations are coupled via an iterative operator splitting...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182612-MS
... to unstructured grid. A new mesh generation approach is first presented to discretize the complex fracture network, accounting for both hydraulic fractures and natural fractures. Voronoi cells (or perpendicular bisector, i.e. PEBI grids) are constructed with high resolution near the fractures and with larger...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182621-MS
... Abstract A comprehensive methodology for gridding, discretizing, coarsening, and simulating discrete-fracture-matrix models of naturally fractured reservoirs is described and applied. The model representation considered here can be used to define the grid and transmissibilities, at either...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182664-MS
... Abstract We study the order of accuracy in time discretization for poromechanics, applying the fixed-stress split scheme. High-order methods in time are often used, for example, in order to match high-order schemes in space. We consider two operator splitting methods motivated from the fixed...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182616-MS
...) discretizations may offer several attractive features, especially for fluid flow in heterogeneous or fractured porous media. The objectives of this work are to develop a fully-implicit CCFV framework that could achieve second-order spatial accuracy on smooth solutions, while at the same time maintain robustness...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182671-MS
... Abstract Hierarchical scale separation (HSS) is a new approach to solve large sparse systems of linear equations arising from discontinuous Galerkin (DG) discretizations. We investigate its applicability to systems stemming from the nonsymmetric interior penalty DG discretization...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182699-MS
.... The objective of the paper is to couple flow and geomechanics using unstructured grid models, to demonstrate the ability to apply a more efficient pressure coupling using discretization at vertices on both sides (mechanical and flow equations). Coupled equations are discretized and solved on an unstructured...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173277-MS
... an auxiliary mixed finite element discretization of the problem, which is constructed by embedding each finite volume into a refined set of tetrahedral or hexahedral elements. Given a possibly unstructured mesh and the permeability coefficient of a highly heterogeneous medium, the AMGe-upscaled (coarse...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173303-MS
... theoretical unconditional stability, we fix the second Piola-Kirchhoff total stress field in this study, based on the assumption that the difference between the two is small, because the constitutive relations are formulated by the second Piola-Kirchhoff total stress. In space discretization, we use...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173265-MS
... unknowns associated with the fine grid cells to unknowns associated with the coarse grid blocks. These mappings are constructed by restricted smoothing: starting from a constant, a localized iterative scheme is applied directly to the fine-scale discretization to give prolongation operators...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173294-MS
... estimates. Reservoir Characterization unconditionally stable convergence boundary error amplification factor reservoir geomechanics discretization heat flow fluid flow Heat Generation Upstream Oil & Gas international journal undrained-adiabatic split fixed-stress split reservoir...

Product(s) added to cart

Close Modal