--> Abstract: Rock Physics Modeling is Critical for AVO Analysis – A North Sea Paleocene Case Study; #90063 (2007)
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Rock Physics Modeling is Critical for Previous HitAVONext Hit Analysis – A North Sea Paleocene Case Study

 

Hübert, Lars1, Karsten Müller1, Jack Dvorkin2 (1) Rock Solid Images, Oslo, Norway (2) Stanford University, Stanford, CA

 

A thorough understanding of the geology of an area, especially the underlying rock physics is critical for getting the Previous HitAVONext Hit right. The Lower Tertiary section of the Norwegian North Sea has proven up Previous HitAVONext Hit as a viable exploration tool, however, as this case study shows, using Previous HitAVONext Hit uncritically may lead to false positives, resulting in dry wells, or false negatives thereby missing opportunities.

 

The results of rock physics, Previous HitAVONext Hit and seismic modeling in Block 24 and 25 indicate a complex system where the Previous HitAVONext Hit signature varies considerably as a function of, the stratigraphy, depth and fluid content. This has an obvious Previous HiteffectNext Hit on an exploration strategy for the area. In Well A, the Heimdal sand provides the reservoir. Here the Previous HitAVONext Hit signature for hydrocarbons is Class III. Other reservoir sands (Hermod and Balder) are not developed in this well. In Well B we find reservoir quality sands in the Balder, Hermod and Heimdal formations. Modeling indicates that hydrocarbons in the Balder sand should exhibit a Class III Previous HitAVONext Hit, in the Hermod sand a class IIP signature, and the Heimdal sands should exhibit a Class I Previous HitAVONext Hit when hydrocarbon bearing. Note the contrast between Heimdal sand in Well A and Well B. Interference effects, due to thin layers, further complicate matters by clouding an expected Previous HitAVONext Hit Previous HiteffectNext Hit.

In conclusion, a thorough understanding of the rock physics, particularly as it relates to burial, and a thorough understanding of the stratigraphy of the area is critical for using Previous HitAVOTop as an effective exploration tool.

 

AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California