Click to see subtopics:Correlations
Meehan: Generally applicable to calculate water properties while accounting for salinity.
Constant Properties: Allows you to enter values for the solution water gas ratio, water formation volume factor, water compressibility, and water viscosity at initial reservoir conditions.
Custom Table: Allows you to enter laboratory measurements for water properties.
Meehan (generally applicable)
Water compressibility is affected by the presence of solution gas, which evolves below the bubble point. The bubble point pressure of a gas-saturated brine is equal to the bubble point pressure of the co-existing oil. In a gas / water system, the water is considered to be at its bubble point at the initial reservoir pressure. Meehan presented an empirical correlation to determine the isothermal compressibility coefficient of gas-free water and gas-saturated water.
Compressibility
Gas-fee water
where:
A = 3.8546 – 0.000134
B = -0.01052 + 4.77 * 10-7 p
C = 3.9267 * 10-5 – 8.8 * 10-10 p
Gas-saturated water
where Rsw is the gas solubility in water
Saline solution
cT,w = cT,wg * Cz
where S is the salinity of saline solution (brine)