Gas Material Balance

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Brief

Gas Material Balance equation

Math & Physics

Production mechanism - gas compressibility only:

 GIIP \times B_{gi}= (GIIP - G_p) B_g

See also

P/Z plot
Gas Flowing Material Balance
Oil Material Balance
Oil Flowing Material Balance

Nomenclature

 B_g = gas formation volume factor, ft3/scf
 B_{gi} = initial gas formation volume factor, ft3/scf
 GIIP = gas initially in place, scf
 G_p = cumulative gas produced, scf