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Application of Terrestrial Lidar to Upper Silurian, Shallow-Marine Outcrops, Southern Libya—Implications for Subsurface Exploration

By
Dirk Radies
Dirk Radies
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Michael Scherer
Michael Scherer
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Robert Koehazy
Robert Koehazy
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Published:
January 01, 2011

Abstract

Terrestrial LIDAR data were acquired at four sites in the Acacus Formation in southwestern Libya in order to better understand the sedimentary architecture and to create outcrop models to aid ongoing subsurface exploration. The outcrop models comprise up to 8 individual scans merged to produce panels up to 1.2 km wide and c. 200 m high. The panels highlight the gross stratigraphic architecture including shallowing- and coarsening-upwards cycles, major channel bodies, and subtle prograding units. The scan resolution was chosen to resolve the bed-scale stacking that typifies hydrocarbon reservoirs in this formation. Surfaces and facies observed in the outcrops and constrained by the LIDAR data were then used to construct 2-D synthetic seismic panels of the outcrop. These models were parameterized with densities and velocities from subsurface examples and used to gain insight into the seismic resolution of depositional architecture.

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Contents

SEPM Concepts in Sedimentology and Paleontology

Outcrops Revitalized: Tools, Techniques and Applications

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

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