A measure of relative fluid density \rho_f change due to a unit pressure p variation:
(1) | c_f = \frac{1}{\rho_f} \frac{\partial \rho_f}{\partial p} |
This can be redefined in terms of fluid volume
V_f:
(2) | c_f = -\frac{1}{V_f} \frac{\partial V_f}{\partial p} |
Symbol | Dimension | SI units | Oil metric units | Oil field units |
---|---|---|---|---|
c_f | M-1 L1 T2 | Pa-1 | kPa-1 | psi-1 |