... reservoir chemical reaction fluid modeling flow in porous media acidizing different injection velocity experimental result injection velocity sciencedirect higher injection velocity acidization effective surface area reservoir surveillance diffusion coefficient inj 0 porosity dissolution...

... to maximum at MMP, beyond which it decreases. Using pure methane (MMP = 5500 psi) as the injectate, the diffusion coefficient increases by 250% on increasing the pressure from 2500 psi to 5500 psi and then decreases. Based on the data available in the literature, this decrease in diffusivity can be explained...

... highlights the importance of surface area to the success of EOR. reservoir characterization fluid modeling reservoir simulation equation of state upstream oil & gas primary production transport diffusion coefficient boundary condition primary depletion enhanced recovery solvent injection...

... oil shale injection pressure co 2 diffusion coefficient grid diffusion fracture recovery factor hydraulic fracture permeability molecular diffusion surfactant oil recovery Introduction The DFN Approach to Model Fractured Reservoirs Hydraulic fractures (HF) and natural fractures...

... Abstract The performance of gas injection EOR in fractured reservoirs can be dictated by diffusive mass transfer between the fracture/matrix segments, particularly for high fracture-intensity and low matrix-permeability. The classical Fick's law approach, with constant diffusion coefficients...

... numerical dispersion fluid modeling gas injection method upstream oil & gas grid block diffusion hydraulic fracture dpm fracture diffusion coefficient reservoir oil hnp method matrix block matrix permeability Introduction Gas-based enhanced oil recovery (EOR) may serve as the next...

... area with time. These two parameters should be maximized for best recovery. Upstream Oil & Gas effective diffusion coefficient coefficient huff co 2 primary production hydraulic fracturing oil reservoir recovery matrix injection flux enhanced recovery concentration ultra-tight...

... considering CO 2 molecular diffusion and nanopore confinement. The traditional phase equilibrium calculation was modified to calculate the critical fluid properties with nanopore confinement. The simulation results show that the CO 2 Huff-n-Puff with smaller CO 2 diffusion coefficients underperforms...

... logic programming concentration chamber velocity diffusion coefficient mass fraction production rate Injection Rate bitumen viscosity cumulative oil production oil production rate interface equation Introduction There are some limitations in applying Steam Assisted Gravity Drainage...

...% of which attributed to gas injection EOR. enhanced recovery gas injection oil production gas injection eor injection Oil Recovery Upstream Oil & Gas composition diffusion coefficient reservoir gas injection method co 2 Codell Niobrara Modeling & Simulation injector Wattenberg...

... Abstract This paper presents a novel technique to determine multi-component diffusion coefficients for CO 2 injection in a North Sea Chalk Field (NSCF) at reservoir conditions. Constant volume diffusion (CVD) method is used, consisting of an oil-saturated chalk core in contact...

.... 2016 ). Consequently, molecular diffusion is assumed to be the only mechanism of mass transfer ( Upreti and Mehrotra 2002 ; Sun et al. 2014 ). For an n -component system, Fick's diffusion coefficients form a square matrix of dimension of ( n − 1) × ( n − 1), which includes the "main term" diffusion...

... process was found to be beneficial in both models in terms of enhancing the ultimate oil recovery in ULR. enhanced recovery Modeling & Simulation mechanism Artificial Intelligence fracture network co 2 diffusion coefficient heterogeneous model injection oil production porosity matrix...

... salinity. In the model, dispersion predominates in sandstone, whereas diffusion controls the transport of salt ions within shale. The dispersivity and diffusion coefficients are based on published data. The simulation results show that low-salinity water-flooding of thin (<2.4m thick) sand layers...

... sweep and displacement efficiencies. In current simulation models, molecular diffusion is commonly modeled using a classical Fick's law approach with constant diffusion coefficients. In the classical Fick's law approach, the dragging effects (off-diagonal diffusion coefficients) are neglected...

.... The experimental data are compared with a simulation model that takes diffusive and gravitational forces into account. We find that the initial stage of all experiments can be described by a diffusion-based model with an enhanced "effective diffusion coefficient". In the second stage enhancement of the transfer...

... complex reservoir diffusivity experiment enhanced recovery concentration hydrocarbon solvent system oil sand Upstream Oil & Gas effective diffusion coefficient effective diffusivity diffusion coefficient heavy oil coefficient porosity variation equation oil concentration...

... inside each pore. Increasing the fluid velocity has the same effect on local mixing as decreasing diffusion coefficient by the same factor. In limit of very large fluid velocity (or no diffusion) local mixing tends to zero and core-scale mixing is entirely caused by variations in velocity. Modeling...

... diffusion coefficient from experimental measurements of the gas pressure decline in a closed tank by dissolution of gas in the liquid. The short- and long-time solutions of these models are derived analytically under various conditions. These solutions are reformulated for direct determination of the best...

... precipitation was observed but not quantified. vapor chamber artificial intelligence oil sand spe 59330 diffusion signal strength physical model enhanced recovery concentration information information management diffusion coefficient image analysis upstream oil & gas interface bitumen...