Compressibility of multiphase fluid in thermodynamic equilibrium at a given pressure
and
temperature is a simple sum of its
single-phase components:
| LaTeX Math Block |
|---|
|
c_f(p, T) = \sum_{\alpha} s_\alpha c_\alpha |
where
| -phase saturation, subjected to | LaTeX Math Inline |
|---|
| body | \sum_{\alpha} s_\alpha = 1 |
|---|
|
|
|---|
| |
|---|
In most popular practical case of a 3-phase fluid model this will be:
| LaTeX Math Block |
|---|
|
c_f = c_w \, s_w + c_o \, s_o + c_g \, s_g |
where
mean
water phase,
oil phase and
gas phase.
See also
[Compressibility] [Single-phase fluid compressibility]
[Compressibility (multi-phase fluid) @model]
