Unfoldability versus incoherences

@inproceedings{Galera2001a,
 abstract = { The construction of a 3D structural model is often based on seismic images more or less precise. In order to
validate the model, the geologist usually restores it to check if it looks coherent in its initial state. The first
interpretation may be directly unfoldable but also shows areas of incoherence. The geologist often has doubt
about the non-unfoldability which could either be a real structural problem or an artefact. Indeed, if parts of the
horizons are poorly imaged, the picking uncertainty leads to a geometry of the horizon containing many little
bumps. These local features make the horizons not unfoldable. The current software packages are able to unfold
a horizon or a layer preserving the area or volume, even if the horizon is not unfoldable. They overcome the
unfolding creating distortions which are meaningless from a geological point of view.
The new tool we have developed, allows the geologist to locate these zones of potential problems on the
horizons, and then to locally correct the geometry to obtain a unfoldable horizon. If the geologist thinks the nonunfoldablility
is due to a picking artefact, an automatic correction can be performed, producing a closer, smooth
and unfoldable geometry. If the geologist estimates that this non-unfoldable geometry is, in reality, a zone of
strong internal deformation, he may use the algorithm to isolate this part and restore it by another method than
the flexural slip. },
 author = { Galéra, Cyril AND Bennis, Chakib AND Moretti, Isabelle AND Mallet, Jean-Laurent AND Lecomte, C-C. },
 booktitle = { $21^st$ Gocad Meeting Proceedings },
 title = { Unfoldability versus incoherences },
 year = { 2001 }
}