Fluid Phase Behavior for Conventional and Unconventional Oil and Gas Reservoirs

4.5. Matching the Saturation Pressure Using the Grouped Composition

After grouping the extended groups, the match of calculated and experimental saturation pressure may be altered slightly. Aguilar Zurita and McCain Jr (2002) and Al-Meshari (2005) proposed a methodology to match the saturation pressure using only one variable. Aguilar Zurita and McCain Jr (2002) used the ratio of the critical temperature to the critical pressure of the heaviest component, MCN2. Al-Meshari (2005) used the acentric factor of the heaviest component as the adjusting variable.

Example 4.12

Using the results of Example 4.9 and Example 4.10, match the saturation pressure by Al-Meshari (2005) method.

Solution

The mole fractions and critical properties of the groups are given ...