.... water saturation expression that considers viscous-oil effect based on the effective finger model (EFM), allowing the substitution of a classic semilog linear relationship of k ro/ k rw vs. S w (constant coefficients A and B ) by a unified nonlinear oil-water relative permeability ratio...

... testing chemical flooding methods waterflooding injector calibration curve concentration polymer enhanced recovery upstream oil & gas polymer injectivity test polymer front expression injectivity test viscosity correction flowback test polymer concentration top head pressure society...

.... Yet, rather than assign a probability value to the Proved or 1P deterministic estimate, SPE's Petroleum Resource Management System (PRMS) uses loosely defined expressions such as "reasonable certainty" to convey a high degree of confidence that the deterministically estimated hydrocarbon volumes...

... expression that substitutes the traditional semilog linear relationship between the oil-water relative permeability ratio and water saturation. The production decline analytical method to diagnose waterflood performance as proposed by Yang (2009a and 2009b ) and derived from the solution of the one...

... ) presented a set of empirical equations to forecast production performance. Those equations area based on the concept of loss ratio( Eq.1 ) and its derivative( Eq.2 ). The Inverse of the loss – ratio is known as the decline(D) and represents the fractional change of rate per time- usually expressed in %/year...

... the following normalized expression, Background Abstract Based on synthetic results obtained by Padilla and Camacho for the fluid flow of gas and oil in reservoirs producing by solution gas-drive (SGD) and gravity drainage (GS), in this paper the behavior of the oil mobility function in partially...

... flow bannwart production control upstream oil & gas mechanistic model spe 153472 void fraction fraction equation expression vertical pipe experimental data volumetric fraction bubbly flow gas-liquid slug flow Introduction In the three-phase flow of two immiscible liquids...

... fractal behavior in spatial variables as well as in the time term. Thus, well tests recorded in highly heterogeneous media, not amenable to standard techniques, can be analyzed with such analytical fractal approach. The diffusion expression for a single-porosity system, i.e., when the matrix does...

.... In addition, core sampling for both routine and special core analysis may be biased in spite of the wide number of existing rock types, mostly in the case of heterogeneous rock reservoirs. The main objective of this work was to develop a new mathematical expression for water saturation prediction...

... artificial intelligence reservoir upstream oil & gas reservoir simulation spe 139357 drillstem/well testing cumulative gas production flow rate probability distribution correlation expression relative permeability ratio assumption pvt measurement cumulative oil production monte carlo...

... interaction coefficient scf stb saturation pressure Hydrocarbon Mixture eos molecular weight methane rb stb expression drillstem testing spe 107331 enhanced recovery mod Hydrocarbon System drillstem/well testing experimental 0 Introduction An equation of state (EOS) is an analytical...

... determination equilibrium capillary entry pressure FWL capillary pressure curve water saturation imbibition expression reservoir Introduction Low-permeability chalk reservoirs are characterized by high capillary entry pressures and large oil/water transition zones. Estimation of oil-in-place...

... porosity elastic property correlation constant polynomial correlation bulk modulus dry rock property equation expression dry rock bulk Gassmann flow simulator p-impedance change substitution effect Introduction The use of petroelastic attributes has several useful purposes 1...

... displacement front. Furthermore, we are able to give an analytical expression for the shape of the front and indications of how the shape changes with the key physical parameters of the cementing process. These results are novel and have interesting implications for effective mud removal and complete zonal...

... are treated using semi-analytical and numerical models. The main result of the work is the proportionality between the chemical reaction constant and flow velocity in the range studied. upstream oil & gas injection coefficient expression fluid dynamics reaction rate flow velocity enhanced...

... of petroleum engineers yaccum drillstem/well testing estimation accumulation stage gas injection production monitoring expression artificial lift system drillstem testing reservoir surveillance reservoir pressure ipr curve bottom hole inflow performance fallback casing pressure standard...

... the difference between the specific gravities of the phases (A-3) Δ γ = ( ρ w − ρ o ) g The expression for the water pressure distribution becomes (A-4) p w ( x , z , t ) = p ( x , t ) − Δ γ cos α   h ( x , t ) + ρ w g cos...

... expressions for the rate of reaction (HDS and HDN) described with the help of kinetic equations of the Langmuir-Hinshelwood type. Furthermore, the kinetic parameters involved in the chemical reactions considered in the reactor model were estimated using a multidimensional simplex algorithm under...

... expression hydrotreater feedstock composition hydrotreater reactor equation node simulation gravity procedure Introduction Nowadays several new mathematical techniques have been implemented for process modeling and advanced process control in refineries, chemical plants, and manufacturing...

... fractured reservoir oil recovery experiment normalized oil recovery upstream oil & gas oil displacement vuggy fractured porous media porous medium spe 69637 enhanced recovery fluid dynamics displacement fractured porous media flow in porous media expression total water saturation...