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Interpretation, Modelling and Halokinetic Evolution of Salt Diapirs in the Nordkapp Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 4
Abstract
The Nordkapp basin provides one of the examples of salt diapirism in the Southwestern Barents Sea, becoming an area of interest for hydrocarbon exploration in the last 30 years. Several exploration wells have been drilled close to salt structures, finding hydrocarbon shows but not commercial reservoirs. Consequently, it is of critical importance to gain an understanding about how halokinetic movement influences the tectonic styles, creating structural traps, and controlling the distribution of reservoirs around salt structures. In this study, we use 3D seismic and well data to develop suitable interpretation attribute workflows applied to observed salt structures, in order to refine the interpretation of areas of uncertainty along diapir rims, and get a better understanding about the halokinetic evolution of the basin. Examples of attributes used in the interpretation include: Dip Illumination and Variance, which have been used to define salt bodies; Ant-track and Chaos attributes help to detect salt-related structural elements located close to salt bodies, and other complex attributes such as Cosine of Phase, are used to enhance reflector continuity in areas of uncertainty, and describe the halokinetic basin infill.