The South Campeche Ultracube™ 3D Reprocessing project comprises approximately 15,900 sq km and is located in one of Mexico’s most prominent offshore exploration areas, with several proven oil and gas discoveries.
The Gulf of Mexico (GOM) is one of the most prominent offshore exploration regions and has become known for its salt associated discoveries and mega oil finds. The GOM has a long and complex depositional history and is extensive in size, attracting explorers from around the world. Abundant salt pillows and diapirs populate the subsurface resulting in a need for thorough and modern processing sequences to obtain accurate seismic imaging. The GOM contains multiple thick source rock intervals resulting in multiple petroleum systems throughout the region. The area continues to remain one of the most successful exploration provinces despite maturity as the drive for understanding the complex area and the hunt for the large variety of undiscovered play types continues.
The project is a merge of three existing surveys; the Holok Alvardo 3D (2003), the Cequi 3D (2010) and the Boloi Norte-Balche-Xulum 3D (2003).
The new 3D Ultracube extends over 260 km in the southern part of the Campeche Bay area and provides new depth imaging of the Southern Campeche – Sigsbee Basin and also parts of the offshore Comalcalco Basin. The southern part of Mexican Ridges in the Veracruz Basin are also covered by the new South Campeche Ultracube.
75% of the South Campeche Ultracube is located in waters less than 1,000 metres in depth; with the shallowest water depth being approximately 30 metres.
The project incorporates a very thorough pre-stack imaging and post-stack processing sequence staged in two parts. Firstly, the pre-processing produces high S/N ratio, broadband data and secondly, imaging using TTI Kirchhoff and RTM technologies to properly image the subsurface, often with extensive salt pillows and diapirs.
For further information on the South Campeche Ultracube™ 3D Reprocessing, please contact us directly.
~15,900 sq km
|Key Processing Parameters||
TTI RTM Angle gather tomography
FWI sediment velocity update
Multi-scenario salt model velocity building
Fast Track PSTM Stack
Final Kirchhoff PSDM Stack
True amplitude Kirchhoff PSDM angle stacks (Full, near, mid, far, ultra-far)
Final RTM PSDM Full Stack
Final RTM PSDM angle gathers
Final PSDM Interval Velocities + horizons
Final PSDM epsilon & delta volumes
Pre-migration binned CMP gathers
Final processing report
Behind the Hybrid Curtain
Author: Karyna Rodriguez, Neil Hodgson
GEO ExPro – May 2021
Due to scale, sample bias and a lack of necessity, ‘hybrid’ turbiditic–contouritic sedimentary systems are only just beginning to be recognized as a significant new breed of exploration targets. Both, what can be seen on seismic (contourite influence bedforms) and what is inferred from contourite activity (winnowed turbidites yielding high net-to-gross sands in reservoir targets), is proving to be an essential tool in identifying these exciting hydrocarbon trapping systems.