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Seismic reservoir characterization of a class-1 amplitude variation with offset turbiditic system located offshore Cote d'Ivoire, West Africa

Pedro Alvarez, William Marin, Juan Berrizbeitia, Paola Newton, Michael Barrett and Harry Wood
Seismic reservoir characterization of a class-1 amplitude variation with offset turbiditic system located offshore Cote d'Ivoire, West Africa
Interpretation (Tulsa) (May 2018) 6 (2): SD115-SD128

Abstract

We have evaluated a case study, in which a class-1 amplitude variation with offset (AVO) turbiditic system located offshore Cote d'Ivoire, West Africa, is characterized in terms of rock properties (lithology, porosity, and fluid content) and stratigraphic elements using well-log and prestack seismic data. The methodology applied involves (1) the conditioning and modeling of well-log data to several plausible geologic scenarios at the prospect location, (2) the conditioning and inversion of prestack seismic data for P- and S-wave impedance estimation, and (3) the quantitative estimation of rock property volumes and their geologic interpretation. The approaches used for the quantitative interpretation of these rock properties were the multiattribute rotation scheme for lithology and porosity characterization and a Bayesian lithofluid facies classification (statistical rock physics) for a probabilistic evaluation of fluid content. The result indicates how the application and integration of these different AVO- and rock-physics-based reservoir characterization workflows help us to understand key geologic stratigraphic elements of the architecture of the turbidite system and its static petrophysical characteristics (e.g., lithology, porosity, and net sand thickness). Furthermore, we found out how to quantify and interpret the risk related to the probability of finding hydrocarbon in a class-1 AVO setting using seismically derived elastic attributes, which are characterized by having a small level of sensitivity to changes in fluid saturation.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 6
Serial Issue: 2
Title: Seismic reservoir characterization of a class-1 amplitude variation with offset turbiditic system located offshore Cote d'Ivoire, West Africa
Affiliation: Rock Solid Images, Houston, TX, United States
Pages: SD115-SD128
Published: 201805
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 17
Accession Number: 2019-006796
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. block diag., sects., strat. cols., 3 tables, geol. sketch maps
N00°00'00" - N06°15'00", W02°00'00" - E10°00'00"
Secondary Affiliation: African Petroleum Corporation, GBR, United Kingdom
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 201906
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