Seismic stratigraphic analysis of the Lower Triassic on Norsel High, central Barents Sea

Abstract

Norsel High is located in the southeastern part of the Bjarmeland Platform area, close to the southwestern margin of the Nordkapp Basin. There is one well located on Norsel High, exploration well 7226/11-1. The Lower Triassic, the Havert Formation, is very deeply buried and seems to be a prograding tide – dominated delta system, which very often have poor or challenging reservoir qualities, and therefore has been a bit challenging. The Havert Formation has been interpreted to be dominated by mixed – influenced delta systems with impacts from fluvial input, tidal action and drift currents. This interpretation is based on different sets of data. These different dataset are core description, detailed well interpretation, 2D – and 3D seismic interpretation. The first dataset is the core description of the Havert Formation from three core samples, combined with the second dataset, a detailed well interpretation, which has been interpreted in sequences and depositional environments. The third dataset is seismic interpretation, comprising of both 2D and 3D seismic interpretation. Integrating these datasets gives the Havert Formation a thorough interpretation. The main goal for this study is to provide a better understanding of the Lower Triassic on Norsel High, focusing on the stratigraphic and tectonostratigraphic evolution of the Lower Triassic basin-fill.