Saturated Water Isothermal Compressibility Coefficient (Cw,s)

The compressibility (also known as the coefficient of compressibility or isothermal compressibility is a measure of the relative volume change of a fluid or solid as a response to the application of pressure. The compressibility of water is a function of pressure and temperature.

At pressures below bubble point, the brine compressibility is a function of water and gas formation volume factors as well as solution gas/water ratio.

The Properties of Petroleum Fluids, McCain

Correlations

  • 1-Meehan
  • 2-McCain

Input Parameters

NameInput Value - UnitConverted ValueValidity CheckLink to Calculation Page
Temperature

°f

Pressure

psi

Salinity (NaCl equivalent) Water salinity in parts per million of mass (ppmm)

ppm

Solution gas/water ratio

scf/STB

Solution Gas-Water Ratio (Rsw)
Gas Formation Volume Factor

bbl/scf

Water Formation Volume Factor

bbl/STB

CALCULATE

Results

CorrelationCalculated ValueWarningsRemarks
1-Meehan1/psi
2-McCain1/psi