A typical Petrel workflow follows a logical sequence often referred to as the "Seismic-to-Simulation" workflow.
Before any work begins, raw data must be imported into the project. Petrel supports various formats (LAS, DLIS, SEGY, etc.). petrel tutorial
Once the 3D grid (container) is built, cells are filled with petrophysical properties. A typical Petrel workflow follows a logical sequence