... Abstract The utilization of hydrocarbon gas in enhanced oil recovery (EOR) processes offers two significant advantages: an increase in the recovery factor and a reduction in net emissions. Through core-scale experimental and numerical investigations, effective diffusion coefficients for single...

... to converge thermodynamically to an equilibrium state while being in the disequilibrium state mass recovery scale during the transitional process. This non-equilibrium state creates diffusive/advective gradients in the absence of flow and controls. The mixing processes leads to equilibrium at a certain...

... greatly on the composition of both the reservoir fluid and the injected gas. Particularly in ultratight shale reservoirs, where diffusion and sorption play pivotal roles, a precise understanding of their influence on huff-n-puff performance becomes crucial for accurate predictions of oil recovery...

... photomicrograph erosion resistance hrtem photomicrograph taylor alloy particulate oilfield application subsurface corrosion north america government corrosion inhibition carbide boundary hard-coating free erosion-corrosion resistant nano-composite equation cra diffusion Introduction Erosion...

... and difficult to interpret. Several procedures were needed to regain the control of the well, that was complicated by the effects of oil-based mud thermal expansion, gas solubility and diffusivity principles. Managed Pressure Drilling System (MPD) was also deployed to manage the influx, with a non-conventional...

... of STOIIP. log analysis structural geology subzone 3 oil sand complex reservoir development area well logging upstream oil & gas nmr porosity deficit reservoir characterization bitumen oil saturation saturation decay time diffusion light image reservoir bitumen heavy bitumen...

... Fick’s law of diffusion is widely applied to describe the gas diffusion process in tight gas reservoirs because of its simplicity. When the sorption process follows a linear isotherm and the sorption is fast compared to the diffusion process, the transient diffusion equation ( Grathwohl, 2012...

... they will be in contact with high resistivity. Since being a poor conductor of electricity, the hydrocarbon will show higher resistivity. With this proposal we have an advantage that, unwanted diffusion of group of microwaves doesn't take place in this case as we are using microwaves directly after its generation from...

... ,     F m = f f f r e f f where (33) Δ p = p i n i t − p w e l l ,           p a v r = 1 2 ( p i n i t + p w e l l ) 2b 0 is the average width of the fracture. D is the gas diffusion...

... Abstract The oil recovery from foam flooding mainly depends on the stability of the foam flow in porous media. At severe reservoir conditions, CO 2 foam becomes unstable due to water drainage and gas diffusion through the lamella. The petroleum industry is using several foaming agents...

... of binary gas mixtures (CO 2 /H e and CO 2 /H 2 ) through a nanoporous carbon molecular sieve membrane. It was found that adsorption-diffusion mechanism made it a possible for the nanoporous membrane to be selective to the lighter species (H e or H 2 ) or to the heavier CO 2 , possibly due to surface flux...

... pore radius, the gas flow in shale matrix may fall in flow regimes which include viscous flow, slip flow and Knudsen diffusion. On top of that, gas adsorption/desorption and stress-sensitivity are some other important phenomena in shales. In this paper, we introduce a novel numerical simulation scheme...

... permeability, which is a function of matrix pressure, is introduced in this work. It helps in up-scaling the particulars of the micro scale model to a reservoir one and aids in modelling Darcy flow, Fickian diffusion and transition flow in between the matrix and fractures. Our assumptions are validated...

... permeability of porous media, such as shale. Pores residing in shale have a broad spectrum of size ranging from a few nanometers to micrometers, therefore, multiple flow regimes, including the continuum flow, slip flow, transition flow and sometimes Knudsen diffusion are controlling the flow in the porous...

... or mixture of water with model oil were used to acquire calculated spin-spin relaxation time (T 2 ) and Diffusion Tensor Imaging (DTI) MRI scans. This leads to the pixel-by-pixel characterization of the rock samples and the quantitative evaluation of the saturation profiles in 3-D space. The proposed MRI...

... axtrap 271 LNG bulk metal sulphide regeneration gas diffusion gas processing Sulfur adsorbent society of petroleum engineers mercury removal performance specification porosity mercury removal unit operation metal sulphide axtrap 273 Reason of Mercury Removal Mercury (Hg...

...-filled porosity, which improves the NMR-based saturation and fluid characterization. The second challenge comes from the effect of restricted diffusion of water molecules in pores. We show that a restricted diffusion model is required to obtain accurate saturations and viscosity. The third challenge...

... mixing processes. In contrast, time-scales for lateral diffusional mixing over distances typical of an off-shore well spacing are very long ( Table 2 ). Thus, where diffusion is the only viable mixing process, observations of compositional differences between appraisal wells may simply reflect...

... Pipeline Corrosion well integrity co 2 corrosion internal pit internal corrosion pit reaction diffusion flowline corrosion riser corrosion pin side end gas Bubble evolution hydrogen external corrosion external complete perforation internal small pit Completion Fluid h2s management...

... Abstract The role of diffusion in reducing the saturation pressure of oil in blocks located at different depths of fractured oil reservoirs has been studied. A model to describe unsteady state diffusion in a matrix block with a given geometry in fractured oil reservoirs has been developed...