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Outcrop- and Well-Based Seismic Models of a Carbonate System in Permian Basin: Implications for Seismic Chronostratigrap
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Summary
We present an improved workflow to statistically model paramenters of geometry, facies, velocity and seismic models using outcrop, rock-plug samples, wireline logs and field seismic data. The models built in San Andres-Grayburg mixed carbonate-siliciclastic shelf margin were used to discuss chronostratigraphic meaning of seismic events at reservoir level for a mixed carbonate system. At reservoir (HFC) level, seismic interpretation of stratigraphic surfaces, lithofacies, and stacking patterns are accurate only to around λ/4 (40 m) barring from lithostratigraphic reflections, although interpretations of average trend and geometry are still useful. Well calibration is critical in reservoir modelling.
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