Equations: Reservoir engineering
The equations of the “Reservoir engineering” lessons with their conditions and units, and what each symbol means in this discipline.
This discipline has many equations, so its reference is split by subject: each subject page lists its equations with their conditions and units, and a table of symbols.
337 equations10 topics
Reservoir conditions and development tasks18 equations · 54 symbolsReservoir engineering: tasks across the life of a field · Systems of units: SI, oilfield and metric oilfield · Reservoir pressure and temperatureFluid composition and phase behaviour13 equations · 37 symbolsComposition of reservoir fluids · Phase behaviour: pure substances and binary mixtures · Types of reservoir fluidsGas properties32 equations · 76 symbolsIdeal and real gas: the gas deviation factor (Z) · Gas formation volume factor, compressibility and viscosity · Cubic equations of stateReservoir oil properties38 equations · 91 symbolsBlack oil model: solution gas–oil ratio and formation volume factors · Density and compressibility of reservoir oil · PVT correlations for oil and gas condensate · Oil viscosity and interfacial tensionPhase equilibrium and PVT studies42 equations · 137 symbolsVapour–liquid equilibrium · Separator calculations and optimum separator pressure · Equilibrium ratios: correlations and equations of state · Reservoir fluid sampling · Laboratory PVT tests · How to read a PVT report · Retrograde condensation, wax, asphaltenes and high-pressure fluidsRock properties58 equations · 159 symbolsPorosity · Fluid saturation · Core analysis · Rock permeability · Rock compressibility and the effect of stress on core properties · Wettability and interfacial phenomena · Capillary pressure and the transition zone · Relative permeability · Reservoir heterogeneity and permeability averagingFlow in porous media and transient inflow30 equations · 93 symbolsFlow regimes · Diffusivity equation · Line-source solution and the pressure function · Superposition principleDrive mechanisms and material balance36 equations · 110 symbolsReservoir drive mechanisms · Material balance for gas reservoirs · General material balance equation for oil reservoirs · Straight-line material balance (Havlena–Odeh method) · Performance prediction for solution gas drive reservoirsAquifer influx31 equations · 92 symbolsAquifer models: water influx · Unsteady-state water influx: the van Everdingen–Hurst method · History matching of aquifer parameters · Simplified water influx models: Fetkovich and Carter–TracyOil displacement39 equations · 125 symbolsWhy water is injected: pressure maintenance and oil displacement · Fractional flow function and mobility ratio · Buckley–Leverett theory and the Welge method · Segregated flow and gravity displacement · Displacement in heterogeneous reservoirs · Displacement of oil by gas