... saturation in the aquifer (i.e. the saturation ahead of the front) is equal to one, while the saturation behind the front in the gas zone is S wi . Governing Equations The governing system for two-phase immiscible displacement comprises Darcy's law in both the radial ( r ) and vertical ( z...

... minerals are modeled, allowing for changes in rock and cement properties. Porosity is recalculated considering volume changes due to chemical reactions, and permeability is reevaluated using the Kozeny-Carman equation. Based on the simulation results, the chemo-mechanical composite layer model reassesses...

... of water vapour in gas, c eq , is zero The evaporation rate is governed by a first order kinetics equation Dissolution of CO 2 in water is negligible The ratio of water density to gas density is greater than the equilibrium vapour concentration Based on these assumptions, we can now...

... breaker completion equipment subsurface storage completion installation and operations drilling fluids and materials breaker placement enhanced recovery fluid dynamics directional drilling drilling fluid management & disposal sand control simulation equation geometry computational fluid...

... both detrital and authigenic particles are detached. The pressure drop across the overall core and the concentration of the fine in the produced fluid have been measured. We have derived equations for authigenic-fines detachment using the beam theory and the von Mises failure criteria to obtain...

.... pressure transient analysis enhanced recovery drillstem testing upstream oil & gas formation damage pressure transient testing fluid dynamics waterflooding drillstem/well testing flow in porous media pvt measurement absolute permeability reservoir pressure absolute kh estimation equation...

... in equation 2 . (2) s = 1.151   [ ( P 1 h − P w f ) m − log   ⁡ ( k ϕ μ c t r w 2 ) + 3.23 ] , where P wf ( Δt = 0 ) is the observed flowing bottomhole pressure immediately before shut-in, m is the slope...

... to understand the filtration mechanisms occurring in naturally fractured reservoirs, maximize the laboratory investment by means of a unique phenomenological model that couples multiphase transport with solids entrance and mudcake build up equations. This model, together with current mud design technologies...

... characterize mineral dissolution patterns, which provide valuable guidelines for designing of acidizing treatments. In this paper, we have developed a 3D mathematical model that couples the Stokes-Brinkman equation and reactive-transport equations under radial flow conditions, which has been utilized...

... reservoir pressure operation downhole intervention well intervention complex reservoir overbalance pressure wellbore design casing and cementing drilling operation slurry production enhancement drilling equipment equation mud loss Introduction During drilling and workover operations...

... equation wellbore emulsifier corrosion inhibitor acid surfactant reservoir agent asphaltene onset pressure equation intervención de pozos petroleros flow assurance formation damage production control well performance completion installation and operations flow in porous media enhanced...

... the axi-symmetric flow of size-distributed colloids and accordingly, predict injectivity decline reliably. For this target to be achieved, coreflooding is performed by water with particles that are distributed by sizes. The results obtained by implementing derived exact upscaled equations of colloidal...

... formation damage saturation injection kaolinite content enhanced recovery Fluid Dynamics drilling fluid chemistry detachment equation reservoir characterization Bedrikovetsky salinity Water Resource Research permeability scaling method drilling fluid selection and formulation reservoir...

... materials Chem Upstream Oil & Gas correlation fluid mech Eng proppant spherical particle particle suspension hydraulic fracturing concentration viscosity powder technol terminal velocity equation expression drag coefficient reynolds number proppant transport Sci drag force fracture...

... analytical method of calculating local stress and velocity (near cuttings-bed in annulus) in an eccentric annular flow is derived which makes it possible to estimate the bed height for foam drilling in horizontal wells. Therefore, a new equation for local velocity (critical velocity) to initiate particle...

... allowable pore pressure swab decompression pore pressure difference boundary water-bearing core pressure drop hydraulic diffusivity drilling operation Engineering zubizarreta coefficient expansion isothermal compressibility equation oil-bearing core permeability Introduction When...

... & Gas particle mathematical model salinity particle detachment kaolinite salinity front society of petroleum engineers fine migration analytical model particle concentration detachment equation expression artificial unconsolidated core Introduction Fines migration is one...

... in porous media calculation gel operation fracture permeability artificially fractured core polymer gel injection permeability cubic law Reservoir Surveillance application Fluid Dynamics porosity equivalent fracture aperture equation Introduction Fractures are the primary oil-water...

... are considered, to be applied in both openhole and limited entry completions. The differences in well performance is studied for each case, and analytical equations for the skin factor resulting from each scenario are presented. The anisotropic wormhole networks are obtained from numerical simulations using...

... of strained particles. The kinetics models for fines attachment, detachment, straining, and permeability decline, given by Eqs. (6) are used in the next Section for closing the conservation law system for two-phase colloidal flows in rocks. Governing equations This section derives basic equations...