Skip to Main Content
Book Chapter

3-D Forward Seismic Model of an Outcrop-Based Geocellular Model

By
Xavier Janson
Xavier Janson
Search for other works by this author on:
Sergey Fomel
Sergey Fomel
Search for other works by this author on:
Published:
January 01, 2011

Abstract

Because of their fast acoustic velocity, their ability to create steep slopes, and their important postdepositional diagenetic modification, carbonate rocks are notoriously more difficult to image and interpret using seismic than siliciclastic rocks. This paper shows how building a 3-D synthetic seismogram based on well-constrained outcrop-based 3-D geocellular models can help in seismic interpretation and seismic-based reservoir characterization. Workflow to populate a 3-D geological model with velocity is presented that is based on building statistical distribution of velocity per facies or lithostratigraphic units or diagenetic features and extrapolating velocity through the model using stochastic Gaussian simulation. A 3-D model built from Lower Permian deep-water carbonate gravity flows is used to demonstrate the complexity of interpreting intricate 3-D geometries using 2-D planar seismic slices and to assess volumetric error associated with the intrinsic resolution loss of seismic. Modern karst morphology is used to assess the seismic response of caves, sinkholes, or karst topography in seismic. Finally, a Permian dolomitized ramp-crest grainstone complex is used to test the sensitivity of prestack techniques to pore-type changes in grainy carbonate rocks. These few examples illustrate the strength of building a well-calibrated 3-D synthetic seismogram based on a 3-D geocellular model so that some of the complexity of seismic response of carbonate rocks might be unraveled.

You do not currently have access to this article.

Figures & Tables

Contents

SEPM Concepts in Sedimentology and Paleontology

Outcrops Revitalized: Tools, Techniques and Applications

Ole J. Martinsen
Ole J. Martinsen
Statoil Exploration
Search for other works by this author on:
Andrew J. Pulham
Andrew J. Pulham
ESACT
Search for other works by this author on:
Peter D.W. Haughton
Peter D.W. Haughton
University College Dublin
Search for other works by this author on:
Morgan D. Sullivan
Morgan D. Sullivan
Chevron Energy Technology Company
Search for other works by this author on:
SEPM Society for Sedimentary Geology
Volume
10
ISBN electronic:
9781565763067
Publication date:
January 01, 2011

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal