TGS has announced that processing of the northern half of its ocean-bottom node (OBN) multi-client survey in the Norwegian North Sea is complete and has been delivered to pre-funding customers.
TGS has announced that processing of the northern half of its ocean-bottom node (OBN) multi-client survey in the Norwegian North Sea is complete and has been delivered to pre-funding customers. Data processing will be complete for the southern half of Utsira in September 2020.
Undertaken with its partner, Axxis Geo Solutions (AGS) the 1584-km2 Utsira survey was completed in October 2019. The total number of nodes deployed for the survey was 143,567 and total shots were 3,942,230. The size of the input data for processing the survey was 1.5 petabytes. To put the project into context, the data collected is equivalent to a typical 520,000-km2 marine survey — enough to cover an area the size of Spain.
‘OBN has proven to be the ultimate imaging tool to help operators overcome complex geological imaging challenges,’ said TGS. ‘With full azimuth and ultra-long offsets acquisition, complex geology can be illuminated in all directions and structures and attribute variations can be properly understood. Greater than ten times higher fold significantly improves the signal-to-noise ratio, as well as the ability to distinguish between structure and attribute anomalies. OBN is also the ideal tool for characterization of fluids in a reservoir.’
