The usual classifications are summarised below:
| Number of phases | Number of wells | Solver type |
|---|---|---|
| Single-phase pressure diffusion model | Single-well | Analytical |
| Multi-phase pressure diffusion model | Multi-well | Numerical |
In many practical cases the pressure diffusion processes honor PDE with constant coefficients which opens the following engines:
| Time Convolution | Spatial Superposition |
| Pressure convolution model | Pressure superposition model |
| Pressure deconvolution model | Pressure decomposition model |
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing