... simulation midstream oil & gas simulation work diffusion deposition contour crude oil pipewall equation flow rate inlet geometry liquid fraction pipeline illustration wax-oil mixture solidification shear stress pipe symmetry Introduction The effective pipeline transportation...

... studies and simulation works, the CO 2 -EOR mechanisms were discussed, including molecular diffusion, CO 2 -oil interaction considering nanopore confinement, and CO 2 -fluid-rock minerals interaction. Subsequently, pilot projects were examined to understand the gap between laboratory works and field tests...

... Abstract Shale reservoirs contain predominantly micro and mesopores (<50 nm), within which gas is stored as free or adsorbed gas. Due to the ultra-small pore size, multiple transport mechanisms coexist in shale reservoirs, including gas slippage, Knudsen diffusion of free gas and surface...

... gas sequence well logging complex reservoir relaxation magnetic field diffusion coal bed methane Upstream Oil & Gas pulse sequence gas content desorption measurement coalbed methane diffusional relaxation magnetic resonance measurement evaluation borehole magnetic resonance...

... build-up is nanoparticles transport mechanism. When the nanoparticles carrier fluid is in contact with oil, it is possible for mass transfer to occur. Thus, nanoparticles can diffuse from its carrier fluid to oil in the reservoir. This mechanism is advantageous in increasing the oil temperature because...

... hydraulic fracturing shale gas fracture aperture shale gas reservoir gas flow Simulation effective permeability gas slippage equation numerical simulation matrix matrix permeability permeability diffusion fracture fracture permeability apparent permeability society of petroleum engineers...

..., thereby implying asphaltene migration in the formation at much faster rates than diffusive velocities. Therefore, a dynamic mechanism is required to take this phenomenon into account. A dynamic mechanism with gravitational instability induced by gas charges into an oil reservoir is proposed...

... sorbed in the micro-porosity at time t in mg, M i,∞ being the total amount of gas sorbed in the micro-porosity at infinite time in mg, r i being the micro-pore radius in mm, and D i being the micro-pore diffusion coefficient in mm 2 /s. (1) D r 2 ∂ ∂ r ( r 2...

...Slip flow, Knudsen diffusion and Darcy flow Generally, the nanopore size of shale organic matrix (average size less than 4nm-5nm ( Kang et al. 2011 )) is smaller than the gas molecular free path, thus, apart from gas molecules' collision, the collision between gas molecules and nanopore walls...

... is mainly based on LWD logs. For such challenging condition, fluids identification is traditionally made possible by stationary Nuclear Magnetic Resonance (NMR) from wireline conveyed logging devices, adopting Diffusion— Relaxation maps technique. Through Diffusion—Relaxation maps technique, the contrast...

... condensate recovery diffusion fracture Introduction Although a huge amount of the world's proven hydrocarbon reserves lie in naturally fractured reservoirs, their successful development remains really challenging (Gutmanis et al. 2013 [ 1 ] ). Notably, fractured basement reservoirs, in which most...

... and deposits are sampled for DSC and GC analysis. The dissolved wax content gradient of the wax-solvent mixture at the same height is from the tank wall to the cold-finger, which is just opposite of its temperature gradient. As the diffusion proceeds, the total proportion of wax with carbon numbers of nC21...

... Abstract The production process of coalbed methane (CBM) includes desorption, diffusion and seepage, and the production is controlled by these three processes together. The permeability of coal reservoir is generally low. To increase the coalbed methane production, well stimulation needs...

...: fluid flow and heat transfer phenomena to establish corrosion-erosion environment and diffusion phenomena to make the corrosion-erosion happened. The first phenomena were modeled using Thermodynamics equation with considering Joule Thomson effect and gas flow equation (Katz for vertical-inclined tubing...

... it is a possible mitigation option for an increasing CO 2 concentration in the atmosphere and an opportunity for permanent and safe disposal of CO 2 underground. One of the important aspects of the CWF process is molecular diffusion of CO 2 from carbonated water into oil (DCWO). The process benefits from oil...

... Abstract Production of methane from coal seems is achieved by pumping out large quantities of water leading to cleat pressure drawdown and hence methane desorption from the matrix, its diffusion through the micropores to the cleat system and out of the wellbore. A coupled numerical model...

... Abstract This study addresses how the competitive impact between the effective stress and the CH 4 -CO 2 counter diffusion-induced coal matrix swelling/shrinking affects the CO 2 enhanced coalbed methane recovery. This issue is important both for the extraction of methane as an energy...

... of swelling. where M t is the mass uptake at time t and M e is the equilibrium mass uptake, k is a constant incorporating characteristics of the macromolecular network system and the penetrant, and n is the diffusional exponent. Fickian diffusion and Case II transport for a thin slab...

... matrix is presented. Further, various factors influcing gas diffusion through coal matrix will be highlighted as well, such as pore structure, concentration and pressure, and water effects. An ongoing bottleneck for evaluating total mass transport rate is developing a reasonable representation of multi...

... to the corrective equation of capillary diffusion. Numerical experiments of 1-D and 2-D flow are presented to demonstrate the efficiency and robustness of the time-splitting technique. The 1-D Buckley-Leverett displacements verify accuracy and numerical behavior of the proposed scheme. It is also used to determine...