Full text loading...
-
Unravelling Hidden Features through Seismic Attribute Analysis: A Case Study of Geological Carbon Storage in Denmark
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, NSG 2025: 31st Meeting of Environmental and Engineering Geophysics, Sep 2025, Volume 2025, p.1 - 5
Abstract
Summary
Ensuring long-term integrity of reservoir seals is critical for safe implementation of geological carbon storage (GCS) operations. This study uses seismic attribute analysis on 2D onshore seismic data acquired in 2023 to delineate structural features and discontinuities within the Gassum domal structure, a potential GCS site in north-western Denmark. We focus on the Chalk Group, which is both the secondary seal and the final barrier to the surface. Spectral decomposition is used to separate seismic signals into narrow frequencies, which are combined in RGB blending. This approach reveals previously undefined discontinuity zones and structural features. Compared to broadband seismic sections, the spectrally decomposed data provides sharper horizon contrasts and improved delineation of fault and fracture zones that may reach the surface and pose a potential risk. Further research will involve quantifying fault displacements, fine-tuning fault detection algorithms, and conducting attribute-based seismic facies analysis to better understand the structural framework of the study area.
© EAGE Publications BV