This is the fourth post in our series on fault plane interpretation in OpendTect. In Part 1, we looked at pre-processing and visualization of fault attributes. This was followed by manual interpretation on a plane-by-plane basis and by the standard workflow of picking sticks first and creating planes thereafter.
Parts 1–3 covered pre-processing, attribute QC, plane-by-plane manual interpretation, and the stick-first / plane-second workflow. Part 4 is where the heavy lifting moves to the machine: we look at the fully automatic fault plane extraction algorithms in OpendTect.
The Faults & Fractures plugin combines voxel-based fault probability with a graph-based reconstruction of continuous fault planes. The result is a clean, geologically plausible set of fault surfaces that you can edit, QC, and export.
We close the series with a practical comparison of manual, semi-automatic, and fully automatic results on the same dataset, and discuss when each approach is appropriate.
