... simulation cell is used to extract and store the local conditional probabilities from a training image (TI). To generate a simulated sample, a random path is generated to sequentially visit all unsampled grid cells and draw conditional samples from the corresponding stored conditional probabilities. The grid...

... areal interface scaling method grid cell cell thickness Durlofsky Scenario society of petroleum engineers Upstream Oil & Gas aggregate transmissibility aggregation case Introduction The application of unstructured, aggregation-based upscaling to reservoir simulation workflows has...

... of the simulation, and are reused during the entire dynamic time-dependent simulation. For several heterogeneous test cases with complex fracture networks we show that, by employing only a fraction of the fine-scale grid cells, FG-ADM can accurately represent the complex flow-heat solutions in the fractured...

...-porosity model fracture network matrix medium MINC method subdivision grid cell matrix block fracture matrix permeability homogenized fracture medium matrix-fracture interaction transmissibility interaction hydraulic fracture matrix cell permeability Introduction Unconventional tight...

... the fine-grid cell. The lateral connectivities within the aquifer regions and between the aquifer and the reservoir are honored, inclusive of the fine-scale description of faults, pinchouts, and null cells. Reservoir regions are not coarsened. Two alternatives exist for the fine-scale pressure...

... multiscale strategy for heterogeneous fractured media, allowing for error reduction to any arbitrary level, while honoring mass conservation after any multiscale finite volume stage. In order to maintain generality, it is shown that when each fracture network is modeled using a single coarse grid cell, our...

... significant acceleration using the preconditioned two-stage approach. linear system grid cell reduction preconditioner reservoir simulation discretization iteration matrix Modeling & Simulation algebraic multigrid weighted dr preconditioner saturation Upstream Oil & Gas dr method...

... congestion may occur which leads to small cells and/or poorly shaped grid cells. The method uses multi-level quad-tree method to achieve the desired resolution in areas of interest and a hierarchical point prioritization/selection procedure to resolve congestion. Grid quality at the desired resolution...

... to develop a CVD-MPFA based multiscale formulation applicable to both structured and unstructured grids in two-dimensions. Artificial Intelligence spurious oscillation grid cell reservoir simulation compuational geoscience interface pressure scaling method Upstream Oil & Gas vertex...

... Dynamics streamline flow in porous media breakthrough curve boundary boundary condition cvfem method Artificial Intelligence Upstream Oil & Gas grid cell vector matrix grid finite element method inflow boundary spe 163593 tetrahedral grid reservoir simulation vertex MPFA method flux...

... Galerkin spatial discretization. They showed that the equations can be solved on a cell-by-cell basis by applying an optimal reordering of grid cells. By reordering the grid cells, the nonlinear system will have a lower triangular block structure, where each block corresponds to the degrees-of-freedom...

... simulation segment pipe reference case real field sector model Upstream Oil & Gas Darcy flow hydraulic fracture Scenario society of petroleum engineers permeability spe 163644 equation grid cell numerical experiment Introduction The use of hydraulic fracturing for well stimulation...

... of grid cells to give reasonable resolution. At the same time, significant geologic complexity will require the treatment of dual permeability regions, faulting and fractures, and high variations of reservoir and fluid properties. Of course, the methods should also work well for extracted sector...

... so that after (possibly) a small bottleneck step that must be performed on one processor, the simulator uses all processors simultaneously. The relative size of the bottleneck step approaches zero as the number of grid cells increases. The implementation establishes parallelism through OpenMP calls...

... technique is based on the study of the kinetics of exchange between the fracture and matrix media. This study is performed on a single matrix block, supposed to be representative of the set of matrix blocks in a given matrix grid cell. We suppose that this block is initially saturated with a dead oil...

... show good agreement with the fine grid solution provided by Landmark using a parallel simulator. As models of tens of millions of grid cells are now solvable on a PC in an hour, this method is a feasible approach for achieving highly accurate upscaled models. This method is particularly appropriate...

... simulation balanced realization nonlinear low-order model pod high-order model cell 1 grid cell identification low-order model upstream oil & gas subspace identification equation reservoir model artificial intelligence saturation response modal decomposition enhanced recovery production...

... at the grid cell faces and make an initial guess to the mixture density at the next time step. For each cell proceeding from injector to producer do the following: Compute v D at the exiting face of the cell based on the mixture density, Update the total moles of each component in the cell from (8...

... numerical examples demonstrate the applicability of the proposed numerical method. equation reservoir simulation decomposition algorithm modeling & simulation upstream oil & gas composite grid grid cell intergrid operation scaling method iteration fac iteration mapping operation...

... Abstract New locally conservative flux continuous formulations are presented for general grids comprised of quadrilateral and or triangular grid cells. The schemes guarantee that a symmetric positive definite discretization matrix is obtained for both an arbitrary polygonal control-volume...