Reservoir gas density

Input(s)

$\gamma_{g}$: Specific Gravity of Gas (fraction)

$\mathrm{T}$: Temperature $\left({ }^{\circ} \mathrm{F}\right)$

p: Pressure (psi)

z: Gas deviation factor (fraction)

R: Gas Constant (fraction)

Output(s)

$\rho_{g}$: Reservoir Gas Density $\left(\mathrm{lb} / \mathrm{ft}^{3}\right)$

Formula(s)

$$ \rho_{\mathrm{g}}=28.97 * \gamma_{\mathrm{g}} * \frac{\mathrm{p}}{\mathrm{z} * \mathrm{R} * \mathrm{~T}} $$

Reference(s)

Applied Petroleum Reservoir Engineering, Second Edition, Craft \& Hawkins, Page: 32.