... reservoir domain. Usually this is accomplished by the generation of the correspondent multipliers for porosity and permeability under the assumption of exponential and power law correlations. This task can become complicated for sandstones that display non-linear and inelastic behavior such as hysteresis...

... Bayesian Inference objective function Upstream Oil & Gas machine learning history matching approximation ensemble smoother assumption model parameter iteration Reynolds assimilation ensemble member outlier regularization parameter ensemble inverse problem square problem application...

...-steam injection. Use of the developed simulator would make it possible to determine whether solvent injection is a good choice in a given situation. enhanced recovery PVT measurement thermal method steam-assisted gravity drainage non-equilibrium assumption Modeling & Simulation Upstream...

...-Gaussian assumption between the observation data and the objective function, the EVA method quantifies the expected uncertainty reduction from covariance information that is estimated from an ensemble of simulations. The result of EVA can then be used with a decision tree to quantify the VOI of a given...

... & Simulation drillstem/well testing oscillation traditional ipr curve red well Drillstem Testing inflow performance production forecast operating point assumption IPR curve coupling time step well performance reservoir simulation reservoir simulator time step network model analytical scaling...

... equations and associated constitutive relations. Even under the strong assumption that the statistical properties of the RCM are known with a high degree of certainty, we will never know the one unique ‘realization’ that represents the real system, which includes the RCM and the flow performance...

... superposition-based methods do not capture the effects of spatial variability in rock and fluid properties and the time delay in sequential pattern development. In this paper, we show that, under certain mild assumptions, an analytical superposition formulation can be developed that propagates...

... equation flow rate total mass flow rate assumption formulation composition solver mass flow rate network equation society of petroleum engineers node example 2 surface network equation upstream oil & gas reservoir simulation simultaneous solution matrix equation efficient formulation...

... Abstract This paper presents a new method for scaling up multi-phase flow properties which properly accounts for boundary conditions on the upscaled cell. Scale-up works by allowing us to omit the simulation of a complete finely-gridded model, but requires us to either make assumptions about...

... thermal method steam-assisted gravity drainage enhanced recovery Modeling & Simulation SAGD Upstream Oil & Gas migration boundary steamflood assumption correction allocation factor spe 38013 pattern boundary contribution production data migration region FMI fluid...

... characterization reservoir surveillance pressure transient analysis flow rate pressure transient testing production control numerical reservoir simulation united states government pet production monitoring penetrating well fine-grid simulation assumption INTRODUCTION In reservoir simulation...

... of isotropic, Gaussian, self-similar permeability fields. Finally, we have presented a discussion of how the current assumptions can be removed within the existing theoretical framework in order to move towards more realistic geologies. We believe that such statistical formulations can result in useful...

... koval prediction fingering model 0 assumption calculation viscosity INTRODUCTION The major shortcoming of most compositional-simulator formulations is the assumption of complete mixing of the fluids in gridblocks. If the displacement is stable, the complete-mixing assumption is adequate...

... and compared to those obtained using a Galerkin finite element approach. A single phase numerical example is included to illustrate the geometric flexibility of the finite volume method. mass balance formulation weighting function expression finite element method fluid dynamics profile assumption...

.... upstream oil & gas porosity model fractured petroleum reservoir spe 16019 equation matrix block boundary condition quantity arbogast source term spe 16019 approximation fracture hydraulic fracturing saturation assumption simulation fluid dynamics phase flow calculation complex...

... spe 13529 reservoir simulation analytical method simulation method permeability dimension modeling & simulation shale distribution boundary condition flow in porous media streamline method thickness geology streamline assumption calculation equation united states government...

... assumption reservoir domain alternating-direction method sagd reservoir simulation num simulator steam-assisted gravity drainage morgan contour united states government thermal method infinite element modelling upstream oil & gas formulation method pet anal INTRODUCTION...

... width equation is based on the work of I. N. Sneddon, but eliminates some of the simplifying assumptions he introduced. Results of simulation of laboratory fractures under various stress conditions are presented. The effects of varying rock properties and stresses on fracture containment are shown...

... ABSTRACT In this work, we examine various pseudo function concepts that have appeared in the technical literature Emphasis is devoted to gravity-segregated vertical equilibrium (VE) 4 and a dynamic pseudo function concept that requires no assumptions regarding the state of fluids...

... such that during its execution, it may perform as many as 30 million floating point operations per second. We also consider the solution of elliptic finite difference approximations in three dimensions with the assumption that the total number of mesh points is on the order of 106. Under this assumption, mesh data...