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Book Chapter

Field-Scale Stratigraphy and Depositional Elements of a Slope Channel System and Implications for Reservoir Dynamics; A Case Study from the Angolan Margin

By
Luz Sophia Cobos
Luz Sophia Cobos
BP America 501 Westlake Park Blvd. Houston, Texas 77079 USA
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Mike Mayall
Mike Mayall
BP Exploration Operating Co. Chertsey Road Sunbury on Thames Middlesex TW16 7LN UK
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Tim Primmer
Tim Primmer
BP Exploration Operating Co. Chertsey Road Sunbury on Thames Middlesex TW16 7LN UK
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Rosa Osvaldo
Rosa Osvaldo
BP Exploration Operating Co. Avenida 4 de Fevereiro 197 Luanda Angola
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Published:
December 01, 2012

Abstract

The imaging of deep-water turbidite slope-channel systems in Offshore Angola has improved greatly during the past decade through the acquisition of high resolution seismic surveys. Within the Marte Field, located in Block 31 NE, high resolution seismic data provides greater definition of the internal stratigraphy of third-order channel complexes. Fourth-order channel cuts and associated facies, including muddy slumps, within the third-order systems have been mapped in considerable detail. Better definition of the internal depositional architecture reveals a high degree of heterogeneity within the channel systems and offers insights into the fluid dynamics of Marte Field reservoir systems. Improvements on data quality also enable the quantitative use of AVA and inversion products for populating static models with realistic reservoir properties. Given the sparse well data available for rock property calibration, the integration of high-resolution seismic facies mapping into geocellular models has allowed us to constrain further property populations based on well logs and analogs-calibrated net-to-gross estimates. Combining alternate facies descriptions within different polygons is used to provide alternate fluid dynamic scenarios and cases. The range of models produced allows us to establish a reservoir operating envelope that is being used for development well planning and for reservoir management decisions.

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GCSSEPM

New Understanding of the Petroleum Systems of Continental Margins of the World

Norman C. Rosen
Norman C. Rosen
Houston, Texas
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Paul Weimer
Paul Weimer
Houston, Texas
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Sylvia Maria Coutes dos Anjos
Sylvia Maria Coutes dos Anjos
Houston, Texas
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Sverre Henrickson
Sverre Henrickson
Houston, Texas
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Edmundo Marques
Edmundo Marques
Houston, Texas
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Mike Mayall
Mike Mayall
Houston, Texas
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Richard Fillon
Richard Fillon
Houston, Texas
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Tony D’Agostino
Tony D’Agostino
Houston, Texas
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Art Saller
Art Saller
Houston, Texas
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Kurt Campion
Kurt Campion
Houston, Texas
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Tim Huang
Tim Huang
Houston, Texas
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Rick Sarg
Rick Sarg
Houston, Texas
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Fred Schroeder
Fred Schroeder
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
32
ISBN electronic:
978-0-9836097-8-0
Publication date:
December 01, 2012

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