Category

Reservoir Engineering

163 items

API gravity

Average permeability for linear flow - Layered beds

Average permeability for linear flow - Series beds

Average permeability for parallel-layered systems

Average permeability in radial systems

Average temperature of a gas column

Calculation of fractional flow curve

Capillary number

Capillary pressure

Characteristic time for linear diffusion in reservoirs

Cole plot

Communication between compartments in tight gas reservoirs

Communication factor in a compartment in tight gas reservoirs

Compressibility drive in gas reservoirs

Correction factor - Hammerlindl

Critical rate for horizontal Wells in edge-water drive reservoirs

Crossflow index

Cumulative effective compressibility - Fetkovich

Cumulative gas production - Tarner's method

Cumulative oil production - Undersaturated oil reservoirs

Deliverability equation for shallow gas reservoirs

Dimensionless pressure - Kamal and Brigham

Dimensionless radius of radial flow - Constant-rate production

Dimensionless time - Myhill and Stegemeier's method

Dimensionless time for interference testing in homogeneous reservoirs - Earlougher

Dimensionless vertical well critical rate correlations - Hoyland, Papatzacos, and Skjaeveland

Dimensionless wellbore storage coefficient of radial flow - Constant-rate production

Effective compressibility in undersaturated oil reservoirs - Hawkins

Effective wellbore radius of a horizontal well - Method 1- Anisotropic reservoirs

Effective wellbore radius of a horizontal well - Method 1 - Isotropic reservoirs

Effective wellbore radius of a horizontal well - van der Vlis et al. method

Effective wellbore radius of a well in presence of uniform-flux fractures

Effective wellbore radius to calculate slant well productivity - van der Vlis et al.

Estimation of average reservoir pressure - MDH method

Formation temperature for a given gradient

Fraction of the total solution gas retained in the reservoir as free gas

Fractional gas recovery below the critical desorption pressure in coal bed methane reservoirs

Free gas in place

Gas adsorbed in coal bed methane reservoirs

Gas bubble radius

Gas cap ratio

Gas cap shrinkage

Gas drive index in gas reservoirs

Gas expansion factor

Gas expansion term in gas reservoirs

Gas flow rate into the wellbore

Gas flow under laminar viscous conditions

Gas formation volume factor

Gas hydrate dissociation pressure

Gas material balance equation

Gas produced by gas expansion

Gas saturation - Water-drive gas reservoirs

Gas solubility in coalbed methane reservoirs

Geertsma's model for porosity/transit-time relationship

Geothermal gradient

Hagen Poiseuille equation (1)

Hagoort and Hoogstra gas flow in tight reservoirs

Hammerlindl method for gas in place

High-pressure region gas flow rate

Horizontal well breakthrough time-With gas cap or bottom water

Horizontal well critical rate correlation - Chaperon

Horizontal well critical rate correlations - Efros

Horizontal well critical rate correlations - Giger and Karcher

Horizontal well critical rate correlations - Joshi method for gas coning

Hydrocarbon pore volume occupied by evolved solution gas

Hydrocarbon pore volume occupied by gas cap

Hydrocarbon pore volume occupied by remaining oil

Hydrostatic pressure

Incremental cumulative oil production in undersaturated reservoirs

Ineffective porosity

Initial gas cap

Initial gas in place for water-drive gas reservoirs

Injectivity index

Instantaneous gas-oil ratio

Interporosity flow coefficient

Interstitial velocity

Isothermal compressibility of oil - Vasquez-Beggs correlation - P>Pb

Isothermal compressibility of oil - Villena-Lanzi correlation - P<Pb

Isothermal compressibility of water - Osif correlation

Kerns method for gas flow in a fracture

Klinkenberg gas effect

Kozeny equation

Kozeny-Carman relationship

Leverett J-function

Line-source solution for damaged or stimulated wells

Low-pressure region gas flow rate for non-circular drainage area

Material balance for cumulative water influx - Havlena and Odeh

Maximum height of oil column in cap rock

Modified Cole plot

Modified Kozeny-Carman relationship

Normalized saturation

Oil bubble radius of the drainage area of each well represented by a circle

Oil density - Standing's correlation

Oil formation volume factor - Standing's correlation

Oil formation volume factor - Beggs-Standing correlation 1 - P<Pb

Oil formation volume factor - Beggs-Standing correlation 2 - P>Pb

Oil in place for undersaturated oil reservoirs without fluid injection

Oil in place in saturated oil reservoirs

Oil lost in migration

Oil saturation at any depletion state below the bubble point pressure

Original gas in place

Payne method for intercompartmental flow in tight gas reservoirs

Performance coefficient for shallow gas reservoirs

Poisson's ratio

Pore throat sorting

Pore volume occupied by injection of gas and water

Pore volume through squared method in tight gas reservoirs

Porosity determination - IES and FDC logs

Produced gas-oil ratio

Productivity index for a gas well

Pseudo-steady state productivity of horizontal Wells - Method 1

Pseudo-steady state productivity of horizontal Wells - Method 2

Pseudo-steady state productivity of horizontal wells - Method 3

Pseudo-steady state radial flow equation

Relative permeability - Corey exponents

Remaining gas in place in coalbed methane reservoirs

Roach plot for abnormally pressured gas reservoirs

Rock expansion term in abnormally pressured gas reservoirs

Shape factor - Earlougher

Solution gas oil ratio - Beggs-Standing correlation - P<Pb

Solution gas oil ratio - Standing's correlation

Solution gas water ratio

Somerton method for formation permeability in coalbed methane reservoirs

Specific gravity of gas hydrate forming components

Time to reach the semi-steady state for a gas well in a circular or square drainage area (1)

Time to the end of infinite-acting period for a well in a circular reservoir

Torcaso and Wyllie's correlation for relative permeability ratio prediction

Total compressibility

Total pore volume compressibility

Transmissibility between compartments

Transmissibility of a compartment

Transmissivity

Trapped gas volume in water-invaded zones

Two-phase formation volume factor

Underground fluid withdrawal - Havlena and Odeh

Vertical well critical rate correlations - Craft and Hawkins method

Vertical well critical rate correlations - Hoyland, Papatzacos, and Skjaeveland - Isotropic reservoirs

Vertical well critical rate correlations - Meyer, Gardner, and Pirson - Simultaneous gas and water coning

Vertical well critical rate correlations - Meyer, Gardner, and Pirson - Water coning

Vertical well critical rate correlations - Meyer, Gardner, and Pirson - Gas coning

Viscosibility

Viscosity of crude oil through API

Viscosity of dead oil - Standing's correlation

Viscosity of dead-oil - Egbogah correlation - P<Pb

Viscosity of live oil - Beggs/Robinson correlation

Viscosity of oil - Vasquez/Beggs correlation - P>Pb

Viscosity of water at atmospheric pressure - McCain correlation

Viscosity of water at reservoir pressure - McCain correlation

Volume of gas adsorbed in coalbed methane reservoirs

Volumetric heat capacity of a reservoir

Water breakthrough correlation in vertical wells - Bournazel and Jeanson

Water breakthrough correlations in vertical wells - Sobocinski and Cornelius

Water content of sour gas

Water cut - Stiles

Water-drive index for gas reservoirs

Water-drive recovery

Water expansion term in gas reservoirs

Water formation volume factor - McCain correlation

Water influx - Pot aquifer model

Water influx constant for the van Everdingen and Hurst unsteady-state model

Water two-phase formation volume factor

Waxman and Smits model - Clean sands

Welge extension - Fractional flow

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