PGS Covers Nordland Ridge in 2016 MultiClient GeoStreamer Program
Commencing early May, PGS will conduct a 8 200 sq. km survey of the Nordland Ridge area of the Norwegian Sea to be completed in 2016. This prefunded GeoStreamer® project extends the existing PGS library coverage of the Halten Terrace to provide a regional dataset of over 29 000 sq. km. Fast-track products from this new survey will be ready early 2017.
The final dual-sensor broadband dataset will be seamlessly merged with the existing GeoStreamer data in surrounding areas.
The new dataset can be used as a baseline survey for future 4D studies, making this PGS GeoStreamer program a cost effective solution for exploration, evaluation, field development and baseline monitoring.
The program will cover all relevant APA licenses in this part of the Norwegian Sea, providing an excellent foundation for high resolution 3D prospectivity screening.
Lack of continuous reflectivity in the Cretaceous section together with high structural complexity and significant faulting at Jurassic level present the main imaging challenges in this area.
Deep-tow dual-sensor GeoStreamer technology provides seismic data rich in both low and high frequency content that reveals both shallow and deeper subsurface structures with unseen clarity. GeoStreamer data enables reliable rock property estimation as the basis for lead and prospect characterization and derisking.
The new survey will cover the northern part of the Dønna Terrace, the Rødøy High, and extend northwards over the southern part of the Træna Basin and the Nordland Ridge. The area has numerous oil and gas discoveries, including Linerle, Falk, Skuld and Svale North.
PGS will deploy a highly effective deep-tow acquisition configuration of 14 streamers with 75 m separation. This is our fifth consecutive year of safe and reliable GeoStreamer acquisition in this part of the Norwegian Sea.
The latest PSDM and velocity model building technology will be utilized to ensure that the clearest subsurface images are generated. PGS' Complete Wavefield Imaging (CWI) workflow specifically addresses the challenges of accurate velocity estimation in areas of complex shallow overburden geology, utilizing the fact that GeoStreamer broadband technology provides direct access to various wavefield recordings as part of the deghosting procedure. This yields high resolution velocity fields, images and 3D absorption (Q) models.
Location of the new and existing GeoStreamer surveys is shown on this Base Cretaceous horizon from the Norwegian Sea. New data will cover the northern part of the Dønna Terrace and the southern part of the Nordland Ridge.