Energean and PetroTrace have entered a partnership for a 3D seismic reprocessing programme over the Vega Field, located in the Sicilian Channel, 20 km South of Pozzallo (RG), Italy. The Vega cluster consists of two parts; Vega A, the field currently in production, and the yet to be developed Vega B field. Vega A was developed with 24 wells using a platform located in 130 metres of water, designed to process 60,000 barrels of oil per day. The Vega A platform is the biggest platform structure of its kind in Italy.

Vega A and B Fields, Structural Map

The 3D seismic reprocessing programme will focus on the legacy data acquired prior to the year 2000, due to the current environmental restrictions which prevent new seismic survey acquisition. The data quality is limited from a technical standpoint by the single-cable recording, significant crossline spacing, short offsets, and the Vaporchoc type source. In addition, from a geological viewpoint, the shallow and tilted Messinian salt/evaporites layer hinders the propagation of the seismic energy into the deeper section.

PetroTrace was selected to carry the programme due to its experience with difficult legacy data, and its solutions tailored for complex geological targets. The work references CRAM (Common Reflection Angle Migration) as a PreSDM migration algorithm, which offers the ideal and most regular illumination of the subsurface for any given acquisition geometry and involved geology. CRAM hence returns the optimal seismic reimaging of the legacy dataset. Through the collaboration with Energean, PetroTrace will leverage its experience within the same type of geological play, after recently completing the 2D and 3D Fiume Tellaro (RG) processing programme for Maurel and Prom, onshore Sicily.

KeyFacts Energy Industry Directory: PetroTrace