4D sim2seis on Volve

Forward pipeline from a reservoir simulation to synthetic time-lapse seismic:

1. Eclipse .EGRID / .INIT → cell-wise pressure & saturation
2. Petro-elastic model (PEM) → $V_p,\ V_s,\ \rho$
3. Build the $V_p(t)$ volume per timestep
4. devito 3D acoustic forward modeling → shot gathers
5. Difference vintages → synthetic 4D response

The acoustic wave equation devito integrates:

$$\frac{1}{V_p^2}\,\frac{\partial^2 u}{\partial t^2} - \nabla^2 u = s(t)$$

Caution

Placeholder — full write-up + figures coming. Working body currently on the HPC box under ~/volve_sim2seis/.