Total density of the rock and saturating fluids:

$\begin{array}{l}\displaystyle \rho_b = \frac{m_t}{V_t}\end{array}$

where $\begin{array}{l}m_t\end{array}$ – total mass of rock element, $\begin{array}{l}V_t\end{array}$ – total volume occupied by the rock element $\begin{array}{l}m_t\end{array}$ .

The bulk density $\begin{array}{l}\rho_B\end{array}$ is measured in $\begin{array}{l}\rm \big[ 10^3 \cdot \frac{kg}{m^3} \big] = \big[ \frac{g}{cc} \big]\end{array}$ .

(1)	$\begin{array}{l}\displaystyle \rho_B = \phi_e \, \rho_f + V_{sh} \rho_{sh} + V_m \rho_m = \phi_e \, \rho_f + V_{sh} \rho_{sh} + (1 - \phi_e - V_{sh}) \rho_m\end{array}$

(2)	$\begin{array}{l}\displaystyle \rho_f = s_{xo} \rho_{mf} + (1-s_{xo}) ( s_w \rho_w + s_o \rho_o + s_g \rho_g )\end{array}$

(3)	$\begin{array}{l}\displaystyle \rho_m = \sum_i V_{mi} \rho_{mi}\end{array}$

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See also

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Bulk Density

See also