..., and gravity effects. The key feature of the simulator is that fluid transport occurs on a streamline grid rather than between the discrete gridblocks on which the pressure field is solved. The streamline grid dynamically changes as the mobility field and boundary conditions dictate. A general numerical solver...

...-permeability rock. We have developed a new technique for estimating the effective permeability of gridblocks used in conventional simulators. The idea behind this technique is to integrate the realism of fracture systems, as captured by discrete-fracture models, with the complexity of the flow calculations...

... can be assumed at the coarse-gridblock scale. Scaling up from the core scale to the geological model is more likely to be possible because capillary forces are more important at smaller scales. A practical approach to the dynamic upscaling problem is outlined, but one should not expect...

.... The described phenomena are shown to occur in a higher-permeability reservoir also as soon as the bottomhole flowing pressure (BHFP) falls below the saturation pressure. Fig. 4 further shows that the fluid in the radial gridblock r6 (extending from 8 to 14 m from well) has also been converted to an oil when...

... displacement mechanism streamline heterogeneity engineering modeling & simulation eclipse upstream oil & gas gridblock recovery curve streamtube displacement heterogeneous system fluid dynamics reservoir simulation dimension enhanced recovery diffusion flow in porous media velocity...

... and waterfloods were allowed to enter both layers. The allocation of the injection fluids depended on the total mobilities at the injection gridblocks for the layers. 12 In reservoirs with k 1 = 100 md; k 2 = 1,000 md; and k V /k H = 0.001, 0.01 and 0.1, polymer-flood breakthrough occurred at ≈450,485...

... fluid dynamics waterflood performance spe reservoir engineering reservoir connectivity upstream oil & gas characteristic flow simulation permeability field permeability realization effective permeability truth case engineering flow in porous media enhanced recovery producer gridblock...

... & gas production control reservoir characterization fluid dynamics saturation production monitoring well logging waterflooding log analysis reservoir simulation reservoir surveillance steam-solvent combination gridblock dispersivity The miscible process is an enriched-hydrocarbon...

... of quadrilateral elements in 2D and hexahedral elements in 3D. When working with regular grids, regardless of the coordinate system used (for example, Cartesian or cylindrical), we can define the gridblocks from a grid origin and block sizes along the three directions of the grid. Integer indices i, j...

... of the adaptive-implicit approach is compared with that of a hilly implicit approach and an explicit-transmissibility approach. Results show that the adaptive-implicit approach is two to three times faster than the other two methods. compositional simulation xxxxx xxxxx gridblock implicit compositional...

... & gas slug 18 co 2 enhanced recovery tds concentration injection solubility saturation equation of state viscosity compositional simulator brine aqueous phase simulation reservoir simulation pvt measurement gridblock concentration miscible method correlation pv 0 The presence...

... 1991 Copyright 1991, Society of Petroleum Engineers The following procedure is used to calculate pseudo capillary potentials that include the reimbibition phenomenon. Consider a stack of matrix blocks inside a gridblock as shown in Fig. 4 . For the constant-pressure gas/oil gravity-drainage...

... and production pressures that are otherwise difficult to reproduce. The history-dependent relative permeability hysteresis model calculates gridblock relative permeabilities that always lie on or between input imbibition and drainage bounding curves. The model makes it possible to use laboratory-derived relative...

... upstream weighting, and Chaudhari's method. 27 6 1988 3 11 1989 6 6 1990 1 11 1990 1 11 1990 Copyright 1990, Society of Petroleum Engineers chemical flooding methods Upstream Oil & Gas upstream weighting Modeling & Simulation gridblock higher-order method...

... accurate temperature distribution with large gridblocks. The paper compares different representations of chemical reactions and includes results of a sensitivity study on the mesh size. Thermal-balance considerations are given for wet or dry combustion to provide calculated values of the peak temperature...

... can write Reservoir Surveillance Upstream Oil & Gas wellblock Wellblock Pressure Modeling & Simulation gridblock difference equation numerical calculation interpretation grid production monitoring reservoir simulation numerical reservoir simulation analytical well model...

... than for nitrogen alone. A generalized compositional model, which incorporates a modified Redlich-Kwong equation of state (EOS) for the fluid properties, was used to simulate the laboratory corefloods described above. With an appropriate estimate of the number of gridblocks required to mimic mixing...

... endpoint mobility ratio breakthrough saturation placement dispersion gridblock spe reservoir engineering mobility ratio placement enhanced recovery upstream oil & gas immiscible case saturation change saturation timestep Following the application by Paterson 1 of diffusion...

...Alexander Desbarats Summary Simulation programs used in reservoir studies require effective gridblock permeability values representing spatial averages over large volumes of formation. Within such volumes, most reservoir rocks exhibit a considerable degree of heterogeneity, with permeability...

... fluid dynamics pseudorelative permeability derivation pseudofunction water saturation gridblock upstream oil & gas interblock pseudofunction fine-grid model reservoir simulation block interface grid orientation permeability saturation coarse-grid model flow in porous media...