Anisotropic pre-stack depth migration in the Cusiana and Cupiagua Sur Fields

The eastern foothills of Colombian western Cordillera is a region with a complex structural history that involves<br>an early shortening parallel to bedding and a folding phase prior to the Andean Orogeny. This was followed<br>by in-sequence thrusting that produced the main structures and finally a phase of out-of-sequence<br>thrusting. Seismic imaging of the BP operated Cusiana and Cupiagua Sur fields has been a big challenge since<br>the exploration phase and as the depletion of the fields continues, the need for accurate event positioning and<br>focusing becomes more and more critical in order to optimize infill wells location and reservoir management<br>in general.