... of gravity, viscous forces, conductive and convective heat transfer, and diffusion, 1 at the expense of incorrectly scaling pressure drop vs. capillary forces, and dispersion vs. diffusion. This scaling method is acceptable for SAGD, where thermal conduction is the rate- controlling step. The scaling...

... properties such as fracture orientation, length of extension, discontinuity in both Up Wells Region (UWR) and Far Wells Region (FWR) and vertical fractures location on VAPEX performance. Additionally, the effect of horizontal and vertical fractures dispersion in different fracture density, dispersion scheme...

... asphaltenes deposition. The two important mechanisms in VAPEX [5,6] are (1) mixing of fluids and (2) asphaltene precipitation. The mixing of heavy oil and solvent depends on the dispersion and capillary forces. Dispersion is essentially dominated by molecular diffusion at small fluid velocities, but can...

... at breakthrough. More discussion on the relative importance of dispersivity and molecular diffusion on gas/gas displacement efficiency under the present test conditions are presented in the numerical simulation section. Effect of Displacing Gas Properties on Methane Recovery Under similar pressure and flow...

..., and sequestration of CO2 in these processes involve dispersion and reaction phenomena in porous media. The overall performance of any CO2 injection project depends on the mechanistic aspects of CO2 interaction with the natural porous system at pore scale, core scale, and the heterogeneity of the geological...

... concentration dispersion equation gas concentration effluent co 2 1 PAPER 2008-141 Modelling the Miscible Displacement in CO2-ECBM Using the Convection-Dispersion with Adsorption Model R. GUO, A. KANTZAS Tomographic Imaging & Porous Media (TIPM) Laboratory, University of Calgary This paper is accepted...

... gas relative permeability modeling & simulation concentration aqueous phase gas injection method composition upstream oil & gas base case dispersion separation experiment law constant permeability henry bachu mole fraction breakthrough enhanced recovery co 2 solubility...

... Abstract Transverse dispersion is a hydrodynamic mixing effect in segregated flow of two immiscible fluids in porous medium. It has been shown theoretically that the effect might contribute to the expansion of water saturation around oil wells after the bottom water breakthrough...

... artificial intelligence upstream oil & gas mechanical dispersion water saturation profile water saturation water zone transition zone saturation profile saturation productivity modeling & simulation water cut reservoir simulation flow in porous media fluid dynamics...

... out with a commercial simulator, using all of the measured data for the system. The major unknown was the diffusion coefficient for the system, which was found by history-matching. A method is shown by which physical diffusion/dispersion can be separated from numerical diffusion. Capillary pressure...

... a rheological behaviour proposed recently for very different foams (volcano magma and golden syrup, [4 Although there are many situations where gas bubbles move in a dispersion system (bubbles that are prevented to coalesce) little fundamental knowledge of its rheology. In general models developed for solid...

... remediation of hydrates relative permeability curve hydrate remediation scale remediation oilfield chemistry numerical model enhanced recovery vapex process dispersion wax inhibition asphaltene remediation oil production modeling & simulation cumulative oil production experiment asphaltene...

... erosion 5 porosity fraction dispersion oil production depletion rate upstream oil & gas flow in porous media sand production dpdt 0 foamy oil flow coefficient reservoir pressure fluid dynamics gas bubble cumulative oil production equation dp dt 0 enhanced recovery...

... spatial variations of permeability. The correct modelling of dispersion is crucial in matching the observed phenomena. For gaseous fingering and VAPEX processes, capillary effects are significant and should be included in simulations. Introduction and background Solvent-based processes for the recovery...

..., and by viscous fingering. Diffusion and hydrodynamic dispersion also play a role in the movement of gas into the reservoir oil. During post-primary production, oil is driven to the producing well by the gas drive, by renewed foamy oil drive, and in some cases by existing natural drives (water drive...

... at approximately 1150oC. This high exit temperature assists in the dispersion of the combustion products. The Questor incinerator is capable of efficiently combusting multi-streams with varying pressure. Ideally these pressures are in the range of 5-30 psig but waste gas can be delivered to the incinerator...

... account for fluid drift. It also suffers from the drawback of simulating physical dispersion by numerical dispersion, i.e., by varying the grid size. Considering the limitations of these two models, there is an urgent need to develop a new general simulator by combining the specific features of these two...

... Abstract Molecular diffusion and mechanical dispersion are the main mechanisms responsible for gas-oil mixing that occurs in a miscible flood process. Most of the conventional reservoir simulators do not account for the these physical mechanisms and presume it to be compensated...

... Abstract We have simulated the effect of fracture characteristics on permeability (k), mean of first passage time distribution (<T>) of non-reactive solutes, and megascopic dispersivity ( α ME ). We used a power law for fracture length distribution and a fBm for fracture aperture...

... Abstract This paper describes important features of an equation of state compositional simulator that are required for the simulation of the Vapex process: asphaltene precipitation and fluid mixing by molecular diffusion and convective dispersion. The asphaltene precipitate...