Petrospec Technologies

Natural Gas Density Worksheet

RHOG = p * Mg / z_g * R * T

Constants
Constant Name	Value
Pressure (psia)
Temperature (deg F)

Constituent Values
Constituent	Mole Percent (%)
Methane - C1
Ethane - C2
Propane - C3
Butane - nC4
iso-Butane -iC4
Pentane - nC5
iso-Pentane - iC5
Hexanes - C6
Total

Natural Gas Characteristics
Natural Gas Characteristic	Value
Compressibility Factor "Z"
Specific Gravity (air = 1.0)
Density (g/cc)
Pressure Gradient (psi/ft)