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Keywords: mesh
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Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, March 28–30, 2023
Paper Number: SPE-212206-MS
... impermeable. In this work we extend the idea of pressure jump stabilization to the compositional poromechanics setting in order to suppress these spurious oscillations. We apply this method to simulations of CO 2 injection into a synthetic aquifer which is represented using a fully unstructured mesh...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203949-MS
... Abstract Solving the equations governing multiphase flow in geological formations involves the generation of a mesh that faithfully represents the structure of the porous medium. This challenging mesh generation task can be greatly simplified by the use of unstructured (tetrahedral) grids...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203908-MS
...2.5D PEBI Grid Generation Abstract An unstructured grid generation method is presented that automates control-volume boundary alignment to geological objects and control point alignment to complex wells. The grid generation method is coupled with an iterative acute mesh reconstruction...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203957-MS
.... Performance comparisons are presented for two phase flow problems on 2D unstructured meshes including fractures. The results demonstrate that the spectral-volume method achieves further enhanced resolution of flow and fronts in addition to that of achieved by the standard higher resolution method over first...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203998-MS
... media bilinear form artificial intelligence fluid dynamics boundary condition application mvem polynomial reservoir characterization beirao da veiga freedom virtual element method upstream oil & gas mesh geometry fumagalli interface Introduction The simulation of underground...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193817-MS
... the mesh elements at the current time level and at two future time levels; therefore, the scheme uses two unknowns per grid block per variable, independent of the spatial dimension. This makes the scheme fairly computationally efficient, both because reconstructions make use of local information that can...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193875-MS
... for tracer and two phase flow problems on 2D unstructured meshes including fractures. The results demonstrate that the spectral-volume method achieves further enhanced resolution of flow and fronts in addition to that of achieved by the standard higher resolution method over first order upwind, while...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193862-MS
.... Current continuum models can simulate core-scale experiments with satisfactory results. Mesh can be refined globally to resolve wormholes in mm or cm at the core scale. However, it is too computationally expensive to use very fine mesh globally to capture wormholes at the field scale. To overcome...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193874-MS
... and control point alignment to wells, yielding essentially perpendicular bisector (PEBI) meshes either with respect to primal or dual-cells depending on grid type. Both primal and dual-cell boundary aligned grid generators use primal-cells (tetrahedra, pyramids, prisms and hexahedra) as grid elements. Dual...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193927-MS
... grid generation grid triangulation edwards mesh nonphysical oscillation permeability tensor Introduction Anisotropy favoring triangulation ( Mlacnik and Durlofsky, 2006 ; Pal and Edwards, 2010 ) parametric surface meshing ( George and Borouchaki, 1998 ); finite element computations where...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182635-MS
... streamlines are efficient for nearly orthogonal structured grids (e.g. Thiele et al., 2003 ; Batycky et al., 2005 ), care is needed for general corner-point grids ( Shahvali et al., 2012 ) and computational challenges arise when applying streamlines to generalised unstructured meshes (e.g., Matringe et al...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182636-MS
... dominates numerical diffusion to obtain converged solutions. This typically requires the use of high mesh resolution and high order numerical methods. This is computationally expensive, particularly in 3D. We use IC-FERST, a novel control volume finite element (CVFE) code that uses dynamic mesh adaptivity...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182616-MS
... and nonlinear convergence performance. We develop a novel multislope MUSCL method which interpolates the required values at the edge centroids in a simpler way by taking advantage of some geometric features of the triangular mesh. Through the edge centroids, the numerical diffusion caused by mesh skewness...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182647-MS
.... Heterogeneous geologic features are represented as volumes bounded by surfaces. Our approach conserves mass and the use of implicit time integration allows the method to efficiently converge using highly anisotropic meshes without reducing the time-step. Our results demonstrate that the CV-wise...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, February 20–22, 2017
Paper Number: SPE-182677-MS
..., the modeling of deviated wells and complex depositional environments, suggests the use of unstructured polygonal (in 2-D) or polyhedral meshes (in 3-D). In general, Two-Point Flux Approximation (TPFA) and First Order Upwind Scheme (FOUS) are used to approximate, respectively, the diffusive and advective fluxes...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173319-MS
...Conclusions and Future Work In this work, we have demonstrated techniques for resolving intersecting fractures in three-dimensions. We take advantage of the Mimetic Finite Difference methods ability to solve over general polyhedral cells. This property is used for meshing intersecting...
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-173312-MS
... lower-dimensional fracture model matrix cell fracture complex reservoir transfer function mesh fracture cell equation Upstream Oil & Gas approximation permeability fracture model fracture network formulation cvd-mpfa formulation Introduction Understanding of fluid flow through...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173191-MS
... were related to fracture properties. Among these properties are hydraulic fracture permeability, hydraulic fracture spacing, hydraulic fracture conductivity, and hydraulic matrix-fracture contact area. The Fracture System Introduction hydraulic fracturing hybrid grid mesh scientific...

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