Viking Graben North Sea
- Viking Graben, North Sea
- Merged and reprocessed
- Survey type
- 3D GeoStreamer
- Survey configuration
- 18 000 sq. km
- Water depth
- 125 m
GeoStreamer PURE Viking Graben offers ~18 000 sq. km of 100% broadband GeoStreamer depth data and provides the structural overview and reservoir details you need to unlock new leads and opportunities in this region. Shown with the orange outline alongside adjacent PGS data library coverage in the area.
Thin sand bodies called injectites are abundant in the area and have extremely high porosity and permeability making them potential targets with very high production rates. The challenge is that injectites are thin, difficult to resolve and evaluate, and require full pre-stack broadband GeoStreamer processing and characterization.
- GeoStreamer PURE
- Velocity model building
- FWI and hyperTomo
- Q-Kirchhoff pre-stack depth
- Well ties
- Rock physics
- Seismic driven inversion (no well information)
Recently reprocessed broadband GeoStreamer data contains high frequencies to resolve thin sand bodies (injectites) and low frequencies to reduce side lobe artifacts and allow accurate reflector picking. A regional rock physics approach using well data from fields and discoveries provides information on the reservoir lithology and fluid content. The pre-stack GeoStreamer data shows excellent correlation with the rock physics analysis and provides reliable estimations of rock and fluid properties away from the wells. Proving therefore that GeoStreamer data helps derisk the interpretation and evaluation of these sand bodies.
Volund Successful Well
Excellent Well-To-Seismic Tie
Left side: relative Vp/Vs analysis helps characterize the rock type and here suggests a number of potential reservoir sands. Blue, low Vp/Vs, indicates high likelihood of reservoir sands.
Right side: relative acoustic impedance analysis indicates what kind of fluid might be present and shows hydrocarbon potential in blue. Blue, low impedance, indicates high likelihood of hydrocarbons.
Dry Well Analysis
GeoStreamer Data Provides Accurate Attributes
No Indication of Hydrocarbons at Well Location
Left side: relative Vp/Vs analysis shows some potential sands (blue).
Right side: relative acoustic impedance assessment suggests the absence of a hydrocarbon reservoir (no dark blue) comparable with Volund.
Previously unresolved injectites have been uncovered with merged and reprocessed data over this large area. Excellent correlation between GeoStreamer derived elastic properties and well log attributes is observed. This type of detailed analysis can unlock the near field potential of new fields, like Frosk.
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