Full text loading...
-
Shallow fluid flow in the SW Barents Sea – An integrated multi-scale geophysical analysis
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Typically, the oil and gas industry only acquires high-resolution seismic data and multi-beam hydro-acoustic data as part of classical site surveys, mostly used for identification of shallow drilling hazards. However, in this paper we demonstrate that utilization of these kind of high-resolution data sets provide significant additional information of great value for shallow fluid flow assessment.
We present results from an integrated multi-scale geophysical analysis of shallow fluid flow in the Leierdjupet fault complex in the SW Barents Sea aiming at improving the assessment of a prospective shallow hydrocarbon accumulation, i.e. de-risking the retention. For this purpose, we carried out an interpretation of high-resolution 2D seismic data, multibeam bathymetry and water column imaging data acquired as part of a research collaboration between the University of Tromsø and DEA Norge in July 2017.
The combination of geophysical methods operating at different scales enabled us to close the gap between geological structures observed in the deeper subsurface and fluid escape features at the seafloor. Thereby, we obtained a complete holistic understanding of the complex leakage pathways and source-to-sink plumbing mechanisms, which is crucial to delineate and de-risk the retention of the shallow HC accumulation.