... equation numerical diffusion displacement timestep streamline path gravity number upstream oil & gas spe reservoir engineering reservoir simulation injector flow in porous media streamline streamline simulator production monitoring waterflooding gridblock reservoir characterization...

...J-C. de Hemptinne; Honggang Zhou; Gérard Moracchini; Isabelle Brunella Summary The usual method for determining the gas in place (GIP) in a reservoir uses a balance equation based on laboratory measurements of the raw gas volumetric factor as a function of pressure on a water-free basis...

... & gas intersection gridblock fluid dynamics fluid flow modeling & simulation spe reservoir engineering boundary-element method boundary equation permeability value fracture system hydraulic fracturing fluid pressure matrix permeability The permeability of the fracture system...

...A. A. Shinta; Abbas Firoozabadi Summary An association model has been incorporated in the Peng-Robinson equation of state (PREOS) to use the combined model for water/res-ervoir crudes phase-behavior calculations. The interaction coefficients between H 2 O and hydrocarbons follow a simple...

...Pradeep Kaul; R. L. Thrasher Summary A parameter-based approach for two-phase-equilibrium prediction that uses the two-parameter Peng-Robinson equation of state (EOS) has been developed. This approach takes advantage of the special mathematical forms of the ideal mixing and excess parts...

... deliverability model, we show that fine-grid single-well simulations can be reproduced almost exactly with a simple rate equation that uses pseudopressure. The key is knowing the producing GOR accurately. The effect of near-wellbore damage, vertical fracture, or flow improvement caused by horizontal well...

... compressibility reserves evaluation estimates of resource in place aquifer compressibility machine learning reservoir equation expansion term aquifer model formulation artificial intelligence regression error influx constant aquifer time constant history oil reservoir regression analysis...

... and determinations more quickly and accurately. Decline-curve analysis, based on the Arps 1 equations, has always been considered to be purely empirical with no basis on physical laws governing the flow of oil and gas through the formation. The works of Fet-kovich 2 – 11 and others have attempted to place...

... method for evaluating the various recovery processes using a simple solution to the material-balance equation. This is used to substantiate the magnitude of the various recovery mechanisms identified in the simulation model. Estimated oil in place is 1,944 MMSTB of which approximately 500 MMSTB...

... reservoir characterization conditional probability aggregate reserve successful layer artificial intelligence dry hole matrix simulation probability chance factor fault block equation prospect monte carlo simulation drilling prospect dependence reserves evaluation When engineers...

...Donald W. Peaceman Summary A new equation is presented for calculating the equivalent wellblock radii, r eq , for all n w wells in a reservoir that fully accounts for arbitrary well rates and the interaction between wells. The data required for the new equation may be obtained in a preprocessor...

... & gas bottomhole backpressure curve oil well friction production control equation pressure transient analysis well performance production logging psia production monitoring multiphase flow reservoir simulation phillips petroleum co reservoir characterization reservoir surveillance fluid...

... rate fluid dynamics high-velocity flow coefficient complete core flow in porous media conclusion spe reservoir engineering core length pressure drop equation firoozabadi permeability The literature of a number of disciplines, including civil, 1 chemical, 2 , 3 and petroleum 4...

... described above for tight, shallow gas in the Medicine Hat field. The first method applies type-curve matching, which combines the analytical pressure solutions of the diffusivity equation (transient) with the empirical decline equation. The second method is an extended material balance (EMB), which...

... 1994 16 8 1994 1 2 1995 1 2 1995 Copyright 1995, Society of Petroleum Engineers equation fluid dynamics wellblock pressure flow in porous media test case base case modeling & simulation conventional well equation well equation new method new well equation off...

... production rate directional drilling upstream oil & gas permeability pressure drop friction turbulent flow gas recovery equation recovery wellbore laminar flow drawdown drilling operation spe reservoir engineering production control production monitoring reduce productivity flow rate...

... drillstem/well testing oil rate oil rim equation drawdown reservoir surveillance upstream oil & gas oil-rim thickness gravity-drainage model cone permeability fluid dynamics mobility ratio aquifer reservoir characterization drilling operation supercritical production vertical flow...

... for the CVFE scheme. This convergence property proves that use of the CVFE scheme is mathematically correct for reservoir simulation. With the control-volume concept, the local balances of each component are fully satisfied. Because the discretized equations resulting from the scheme can be solved by classic...

...-mechanical effects. The model is based on a mass and energy balance for the gas-filled cavern and on the Bernoulli equation and energy balance for flow in the wellbore. Cavern equations are solved iteratively at successive timesteps, and wellbore equations are solved within an iteration cycle of the cavern...

... Copyright 1994, Society of Petroleum Engineers gas injection method modeling & simulation concentration displacement equation gas saturation enhanced recovery composition composition path unstable front spe reservoir engineering simulation result viscous fingering upstream oil...