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
| Name | Input Value - Unit | Converted Value | Validity | Link to Calculation Page | |||
|---|---|---|---|---|---|---|---|
| Temperature | 165 | °f | |||||
| Pressure | 3500 | psi | |||||
| Salinity (NaCl equivalent) Water salinity in parts per million of mass (ppmm) | 68000 | ppm | |||||
| Solution gas/water ratio | 11.42 | SCF/STB | Solution Gas-Water Ratio (Rsw) | ||||
| Gas Formation Volume Factor | 0.00092 | bbl/scf | |||||
| Water Formation Volume Factor | 1.023 | bbl/STB | |||||
| CALCULATE | |||||||
Results | |||||||
| Correlation | Calculated Value | Warnings | Remarks | ||||
| 1-Meehan | 0.000002801 | 1/psi | |||||
| 2-McCain | 0.000002642 | 1/psi | |||||