Area: Norwegian sector from the coast of Finnmark to Svalbard
Map projection: UTM zone 34 N, datum ED50
Coverage: Good south of Bjørnøya, reconnaissance coverage between Bjørnøya and Svalbard
Cube dimensions: 3000m x 3000m laterally and 100ms vertically from 100ms to 6000ms, 199 by 316 by 60
Database: all released digital seismic processing velocity data in Petrobank, and selected released check shot data.
Gridding method: AKG proprietary time slice with anomaly rejection, survey balancing, anisotropy correction and well tie.
Two cube versions are included. A filtered and balanced stacking velocity cube, which has not been tied to wells, and a well calibrated average velocity cube.
Depth conversion with the well calibrated average velocity cube produces anomaly free depth maps that tie the wells. The whole job is done in minutes. The maps are of high quality, and do not need corrections before they are used. This is the best possible choice for project where turnaround time is critical, such as license round exploration work.
The stacking velocity cube without well calibration should be used where anisotropy correction needs to be keyed to interpreted horizons, and where well tie therefore should be introduced after extraction of velocity maps from the cube. This is recommended in areas with large velocity contrasts in thick layers above the target horizon.
Aker Solutions has a highly qualified Depth Conversion Services team who can give advice on the use of the cubes, and assist in any way needed.