.... The method starts from an fEDFM model which is built by a new technique of transmissibility modification by introducing an artificial pseudo-steady flow near fractures. Adaptive grid refinement and coarsening procedures are designed under an adaptive criterion based on both the fracture distribution and flow...

... transmissibility Introduction Production optimization and other problems from field management optimization usually require many forward simulations. The computational cost of these simulations can in many cases be prohibitive for the use of rigorous, model-based optimization strategies. However, given...

... dashed lines). The total CPU time for the fully implicit run has been added for reference (green solid line). Figure 16 Model 4: Computational stratigraphy reservoir model showing (a) the transmissibility field in the J direction and (b) the water saturation profile at the end of the simulation...

... tetrahedral grid grid discretization representation transmissibility modeling & simulation reservoir simulation tetrahedral mesh cartesian grid freedom unstructured grid petroleum engineer Introduction Numerical simulations of multiphase flow and transport in porous media are essential...

...-porosity model) includes the predicted fracture-fracture transmissibility linking two adjacent grid blocks and fracture-matrix transmissibility within each coarse block. The proposed upscaling workflow comprises the train-validation samples generation, convolutional neural network training-validating...

... 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...

... transmissibility integration point deformation Introduction Subsurface reservoirs often contain natural fractures, which often serve as important conduits for fluid flow. The hydraulic properties of these fractures, such as aperture and conductivity, depend on the in-situ stresses, and they can change...

... factors and pore volumes (PVs)). Besides, we discuss the relationship between the INSIM-family methods and the traditional grid-based methods, which indicates that the INSIM-family methods can calculate the transmissibility of the connection between coarse-scale cells in a more accurate manner...

... the integrally embedded discrete fracture model (IEDFM). This model considers a more improved pressure distribution assumption in the vicinity of fractures compared to traditional EDFM and calculates the matrix-fracture transmissibility semi-analytically. Another advantage of the IEDFM is the capability...

... transmissibility, and upscaled well indices. The main value additions are, the ability to selectively coarsen and adapt areal and vertical resolution based on geological features, areas of interest, and/or stratigraphic layer metrics resulting in improved accuracy, the improved simplicity and robustness...

... simulation interpolation Voskov physics Modeling & Simulation physical state linearization khait geothermal model calculation parameter space formulation transmissibility operator society of petroleum engineers architecture Upstream Oil & Gas multiphase flow discretization...

... metric coarse model partition resolution fine-scale model Water Breakthrough Time grid reservoir simulation model size boundary condition transmissibility coarse-scale model size oil-rate error society of petroleum engineers permeability Introduction When developing a nonuniform...

... 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...

...-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...

... of the reservoir. Generalized transmissibility derivations accurately account for the well trajectory and estimate the fluxes across potentially non-orthogonal connections. Progressively coarsened grids are then used to adapt to the problem. For relatively fine grids, generalized derivations of transmissibility...

... are coarsened vertically based on fine-scale z-transmissibility. A coarsened column may consist of a single amalgamated aquifer cell or multiple vertically disconnected aquifer cells separated by flow barriers. The pore volume (PV), compressibility, and lateral flow terms of the coarse cell are restricted from...

... transmissibility upscaling can be deployed on the resulting coarsened model to compute effective model properties. The hierarchical construction strategy allows efficient exploration of the geologic features of a reservoir that most impact flow patterns and well communication. The coarsened models are shown...

... at a characteristic time for pressure transients across the cells. The ratio of volume averaged flux and pressure gradient is used to obtain the effective transmissibility between the cell pair. The application of pressure transient concepts has allowed us to develop completely local upscaling and downscaling...

... into major flow pathways. Extended local single-phase upscaling is applied to calculate inter-continuum and inter-block transmissibility. The proposed technique is used to simulate miscible and immiscible displacements on the SPE 10 model. Displacement calculations are performed on the original fine grid...

...-free Particle Swarm Optimization – Mesh Adaptive Direct Search (PSO–MADS) hybrid technique. An accurate global transmissibility upscaling procedure is applied to generate the coarse-model parameters required at each grid level. Distinct upscaled models are constructed using this approach for each...