...
A measure of formation porosity
change due to reservoir pressure variation:...
In many practical cases the pore compressibility can be considered as poorly dependent on reservoir pressure variation:
| LaTeX Math Inline |
|---|
| body | c_\phi(p) = c_\phi = \rm const |
|---|
|
.In this case porosity dependence on reservoir pressure can be simulated as:
| LaTeX Math Block |
|---|
|
\phi(p) = \phi_i \cdot \left[ 1 + c_\phi \, (p-p_i) + 0.5 \, c^2_\phi \, (p-p_i)^2 \right] |
But in case the reservoir pressure is changing substantially one may need to account for the effect it takes on pore compressibility (see Pore compressibility @model).
...
