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A New Approach of Velocity Model Building by Using Geological Density Model - Study Case of the Bjřrnřya Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013, Jun 2013, cp-348-00043
- ISBN: 978-90-73834-48-4
Abstract
Some challenges of velocity model building in a frontier area are the limitation of available well data and sparse seismic data coverage (often only 2D data are available). In the Bjřrnřya basin, the wide variation of uplift histories (from 0 to approximately 2000 meters) and overburden thickness also added complexity to the velocity prediction. In order to tackle these challenges, we introduce a new iterative approach of velocity model building that incorporates the density prediction from basin modeling. The density model was built by incorporating burial history, uplift and pressure regime prediction of the area. This density model was then used as a primary guidance for velocity prediction away from the well location. Available seismic velocity was used for QC and comparison purposes. The result of this approach is a velocity model that has a better consistency with our geological knowledge of the area.