Gas Material Balance Functions

Estimates OGIP using modified p/z for geopressured reservoirs, [scf].

Calculates modified p/z for geopressured reservoirs, [psi]. Accounts for formation/water compressibility.

Estimates OGIP using standard p/z method, [scf]. Assumes volumetric depletion.

Predicts cumulative production at given reservoir pressure, [scf].

Predicts reservoir pressure at given cumulative production, [psi].

Calculates p/z ratio for gas material balance analysis, [psi].

Calculates recovery factor for a gas reservoir, [fraction 0-1].

Calculates ultimate recovery factor based on abandonment pressure, [fraction 0-1].