... fluid dynamics flow in porous media upstream oil & gas artificial intelligence convergence iteration nldd runtime subdomain nonlinear elimination aspen equation simulator reservoir simulation enhanced recovery solver preconditioner comput decay nonlinear iteration preconditioned...

... splitting errors. Introducing a fully coupled solution stage on the local subdomains as an additional correction step restores nonlinear convergence. Detailed analysis of the ‘coupling strength’ criteria indicates that the criteria related to the sensitivity of the mass balance to changes in the pressure...

... of petroleum engineers saturation speedup factor base case subdomain transmissibility aquifer cell reservoir model Introduction Full-field reservoir simulation models typically include aquifer regions to model the influence of transient water influx along the reservoir boundaries. The aquifer...

... Newton method Fluid Dynamics time step subdomain fracture fractured reservoir reservoir characterization permeability Introduction The Inexact Newton method with Backtracking (INB) solves a nonlinear system approximately within each iteration. It can save much computational time spent...

... In this paper, we propose an extension to the MFEM that considers curve interfaces described by means of NURBS curves and surfaces. These interfaces are obtained by interpolating a series of discrete points in ℜ n in all numerical examples included here. Subdomain meshes must honor...

... and complex to solve implicitly due to processing time and convergence issues. We propose the calculation of multipoint, nonlinear IPRs by solving near-well subdomains for the subsequent timestep. A flexible reservoir simulation architecture enables the dynamic creation and simulation of near-well subdomains...

... geomechanics upstream oil & gas wheeler artificial intelligence engineering mesh application interface subdomain mandel equation finite element method compaction domain decomposition method Introduction Hydrocarbon production or the injection of fluids in the reservoir can produce...

... Fluid Dynamics linear interpolation flow in porous media interpolation multigrid method Artificial Intelligence Upstream Oil & Gas coarse mesh subdomain coarse space domain decomposition method preconditioner basis function solver operator scaling method reservoir simulation coarse...

... features of the reservoir. The preservation of the fine-scale reservoir characteristics yields higher-accuracy solution compared to an upscaled model. The computing algorithm involves breaking down the fine-grid (FG) computing mesh into an underlying coarse-grid (CG) subdomain. Unlike other MS techniques...

... subdomain intergrid mapping operation grid operation coarse grid cell scientific computing fac algorithm algorithm spe 79714 fluid dynamics production control coarse grid operator enhanced recovery flow in porous media reservoir surveillance reservoir characterization production monitoring...

... decomposition-based preconditioner to achieve faster convergence with high parallel scalability. A preliminary test case of 1.5 million grid blocks with up to 59 processors shows a parallel efficiency of above 90%. calculation formulation solver reservoir simulation correction equation subdomain...

... by selecting the most appropriate model in a given part of the reservoir. For example, only a single-phase or a two-phase model is needed for the aquifer part of the reservoir, while a black-oil model or a compositional model is necessary if the gas phase is present in a subdomain. In this paper, we...

... permeability phase transmissibility procedure upstream oil & gas coarse grid heterogeneity subdomain computational cost absolute permeability Introduction Numerical simulation of petroleum reservoirs is associated with intensive use of computational resources. Advances in petroleum...

... preconditioned adaptive implicit method boundary condition iteration adaptive implicit formulation cpu time preconditioner subdomain flow in porous media production monitoring reservoir surveillance fluid dynamics enhanced recovery newton iteration production control Introduction Coupled...

... Abstract Our approach for parallel multiphysics and multiscale simulation uses two levels of domain decomposition: physical and computational. First, the physical domain is decomposed into subdomains or blocks according to the geometry, geology, and physics/chemistry/biology. Each subdomain...

... Abstract Reservoir grid generation can be simplified by decomposing the domain into a set of subdomains such that modular grid generation can be performed within each subdomain. The question of how to decompose the domain is addressed. Streamline-potential coordinates form an integral part...

.... The simulator building blocks are robust Krylov space iterations using Additive Schwarz as the preconditioner. This approach naturally supports a distributed data structure with overlapping subdomains. In the simulator each subdomain is treated as a small reservoir in its own right, and each subdomain...

.... They use information from the previous time step, to calculate relaxation parameters. To test the robustness and efficiency of these techniques, three-phase black-oil examples with significant flow across subdomain boundaries and examples using locally refined grid have been computed. Results for our...

... ratios, at very high speeds or at the ability to study very large problems, without changing the parallel processing model. parallel processing model. P. 107 solver processor subdomain equation reservoir simulator iteration communication gridblock upstream oil & gas parallelisation...

... as depicted in Figure 2. However, if the orderings are performed as shown in Figure 3 with the subdomain n1 ordered first, followed by n2 and finally the boundary r3 between the two domains, a different structure of the matrix results as shown in Figure 4. The capacitance matrix can then be formed by a block...