New near-field exploration opportunities have been delineated in a recent case study using a GeoStreamer X dataset from the South Viking Graben. The results provide better and more accurate understanding of reservoirs and traps.
GeoStreamer X is an integrated broadband multi-azimuth acquisition and state-of-the-art depth imaging reservoir solution. It illuminates targets from multiple angles to deliver accurate reservoir parameters and trap geometries for volumetric estimates, and by providing reliable seismic attributes, can serve as a baseline for production monitoring.
Learn More
- Case Study | GeoStreamer X Delivers Reliable Prospectivity Metrics
- Geo Expro publication | Accurate Reservoir Attributes Delivered with GeoStreamer X in the South Viking Graben, Norway
- Webinar with Julien Oukili and Cyrille Reiser | Data-Driven Reservoir Property Estimation with GeoStreamer X Data
Reservoir Property Estimation Using the MAZ Dataset
Following a very successful 2019 GeoStreamer X survey in the South Viking Graben, Norway, an additional multi-azimuth survey was acquired further north covering the Utsira High and the Vana Sub-basin.
A combination of innovative acquisition, imaging, quantitative interpretation, and seismic morphology interpretation highlights the underexplored Vana Sub-basin and near-field opportunities on the Utsira High. The data provide an enhanced understanding of the main prospective stratigraphic intervals (Tertiary–Jurassic) and allow improved quantitative assessment of exploration targets.
An Integrated Solution for High Fidelity Subsurface Understanding
The case study, publication in GeoExpro, and the webinar demonstrate that new opportunities can be found and characterized in a mature area such as the Norwegian South Viking Graben with a combination of innovative acquisition, and a seismic-driven reservoir property estimation. Structural and seismic morphology interpretation based on enhanced multi-azimuth imaging and combined with reliable seismic attributes provide a detailed understanding of the Jurassic target interval. The integrated workflow provides a powerful risking and uncertainty assessment tool for prospect assessment.
Complementary information from different azimuths delivers accurate volume estimates. Here porosity is estimated using data-driven elastic attributes and the geobodies shown represent the most porous sand associated with a deeply buried submarine mass transport complex (submarine slide). The legacy narrow azimuth dataset porosity estimation is noisier and less coherent compared to the newly acquired and processed GeoStreamer X multi-azimuth dataset. Using the legacy NAZ data could potentially lead to an overestimation of the volume of porous sands and disappointing drilling results.
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