Formations

Formations can be defined specifically for the Well Schematic column but it is also possible to link to a Formations column in the same well sketch.

Certainly if the intention is to draw multiple well schematic columns (e.g. for multiple stages of a well), linking to a single formations column (which may even be hidden from the well sketch) is the most convenient option. Changes applied to the formations column are then automatically applied to all linked well schematic columns!