Full text loading...
-
Seismic Input for Prospect Maturation and Trap Risking
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
3D seismic data are routinely used in the exploration process. We study the input 3D seismic which may reduce the uncertainty for geological elements considered in the risking and volumetric estimation process. We use an established procedure for prospectivity assessment using the probability concept in this study. We show that structural and stratigraphic horizons can be extracted from input 3D seismic data. The geologic soundness of structural horizons can be obtained from studying depositional environments along these horizons. The detailed composition of faults from fault segments and individual fault stress assessment is possible, which becomes an important input to the trap delineation risking processing. Lithologic and stratigraphic aspects can be obtained from a joint interpretation of the texture and the colour processed depositional environment image along structural horizons.
This methodology may be impacted by poor quality seismic data, for example when surface noise and multiples have not been removed efficiently. The impact of this limitation however, will be mainly on the depositional environment mapping. Structural aspects are less impacted due to the vertical extent of the structural feature and therefore makes the interpretation for structural features less dependent on the data quality.