... flow diagnostics. geologist austria government united states government reservoir simulation fluid dynamics geology modeling & simulation heterogeneity assumption flow in porous media real time system variation flow diagnostic lorenz coefficient enhanced recovery reservoir...

... government core analysis mobility upstream oil & gas saturation log analysis correlation expression equilibrium journal imbibition viscosity drainage austria government flow in porous media enhanced recovery gravity experiment assumption intercept inverse spe journal displacement...

... are the uncertainties and decisions to obtain the asset(s) production and cash flow forecasts, which combines several variables including field development philosophy, reservoir productivity, drilling and workover activities, producing effluents treatment options, corporate targets, technical-economic assumptions...

... which, a better estimate of the fracture productivity is expected. hydraulic fracturing calcite formation reservoir temperature diffusion coefficient acid diffusion coefficient Dolomite formation assumption fracture surface Upstream Oil & Gas acid penetration distance acid closure...

... Abstract In order to better understand reservoir behavior, reservoir engineers make sure that the model fits the data appropriately. The question of how well a model fits the data is described by a match quality function carrying assumptions about data. From a statistical perspective, improper...

... permeability assumption. The study proposes a modified RTA model, which accounts for dynamic permeability to eliminate the error in calculated area. Results from the sensitivity analysis show that the error on surface area calculation ranges from 1% – 323% due to the constant permeability assumption...

... compressibility, viscosity and permeability). Traditionally the approach was: For single-phase liquid flow (oil or water): variation of liquid and rock properties with pressure is assumed to be negligible. Under this assumption the diffusivity equation has constant coefficients and can be solved analytically...

... through different fracture levels with some fracture pattern assumptions. Different options to turn a continuous fracture distribution into a given number of discrete levels are investigated. Eventually, based on dimensionless coefficients, an optimal number of fracture scales is determined by lumping...

... with the assumptions made in this case. We come to the conclusion that a parabolic diffusion law cannot explain the two different diffusion constants, but a hyperbolic law can. In a detailed dimensional analysis of the Navier-Stokes equation dimensionless groups are formed, the magnitude of which determines...

... at each time step by the simulator. Run times similar to the base case are potentially possible while, equally importantly, the optimal value identified is similar to the value returned by the other published optimisation methods referred to above. This paper outlines the assumptions made and, after...

... to procure the desired results. artificial intelligence gas storage facility decision variable therm natural gas storage capex spe 143019 london gas storage national grid assumption storage reservoir university storage facility society of petroleum engineers underground gas storage...

... upstream oil & gas temperature change coefficient temperature data production monitoring reservoir surveillance interpretation exhibition derivation temperature distribution equation production logging assumption numerical simulation result real time system analytical solution...

... and portfolio management Upstream Oil & Gas creativity & intelligence option valuation investment abandonment decision valuation flexibility financial option real option valuation investment decision oil price information assumption real option analysis probability Binomial Lattice NPV...

... future stage-gate decision points. asset and portfolio management price deck risk management Upstream Oil & Gas Artificial Intelligence decision tree learning modeling hydrocarbon price stochastic process correlation NPV assumption machine learning reservoir simulation Monte Carlo...

... enhanced recovery reservoir simulation artificial lift system production monitoring Reservoir Surveillance Upstream Oil & Gas artificial lift alternative equation of state well-bore model assumption bottom-hole pressure simulation model forecasting workflow production control Modeling...

.... Reservoir Surveillance pressure data production monitoring drillstem/well testing completion pressure drop water influx total pressure drop pressure gradient hydrostatic pressure drop fluid density real time system Drillstem Testing water detection pressure sensor assumption optimisation...

... Abstract When simulating naturally fractured reservoirs many uncertainties have to be accepted. These uncertainties do not only origin in the reservoir characterization but also in oversimplifying assumptions of the conventional dual continuum model. One of the shortcomings in this respect...

... and independent variables) with some dimensionless numbers, e.g. the ratio of the permeabilities, the gravity forces divided by pressure forces and ε . The magnitude of the dimensionless numbers with respect to ε will be determined as well. In the fifth key assumption we expand the dependent variables...

... of common modelling techniques where the focus is on geostatistical modelling of the inter-well volume with the assumption that the statistical variables must merely be "tied to" or conditioned to (hard) well data control points. While generally true, this assumption can be weak or misleading, especially...

... assumption annular isolation advanced completion technology create production control petroleum engineer production monitoring figure 10 rate sand/solids control mechanism pipe screen selection Advanced Completion Technology The key to increasing the Net Present Value of a reservoir...