The original data obtained from the reference scribelines are computed and restored in their real spatial position by a reorientation process in two steps.

The data are first plotted on a stereonet respectively to each scribeline and then reprocessed in order to obtain the best reorientation corresponding to the most coherent geometry of sedimentary and tectonic structures for each core: the sedimentary and tectonic trends for each scribeline are superposed
to obtain the general trends for the core.

The trends are compared to the information given in all available geological and geophysical documents (3D seismic map). If the well are deviated, the data are also corrected, at the end, following the indication of the deviation.

All data are then reoriented a second time to obtain trends following the geological information. This reorientation process is done only on good preserved core fragments to reduce the uncertainty. So we can say that this operation is done with a low uncertainty while only the zones presenting a good statement are treated. Considering this hypothesis, the degree of confidence is about +/- 10° for the direction and +/- 5° for the dips.