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Abstract

Summary

The focus of this paper is a cluster of prospects (Prospect-N, Prospect-S and Prospect-W) in the offshore Niger Delta. Two commercial fields with multiple reservoirs and one dry well have been drilled in the study area. The amplitude anomalies were identified in each prospect but similar amplitude anomaly was also located where the dry well was drilled. The reservoir rock at the regional scale and the trap were identified as the major risks for these prospects. The main objectives of this study were to understand the regional reservoir presence and effectiveness, the nature of seismic amplitude anomalies and reduction of the trap risk.

The geological model was used to understand the regional reservoir presence and effectiveness. The 3D seismic interpretation and fault seal analysis helped reduce the uncertainty around the structure and the trap. The Extended Elastic Impedance was used to further dig into the relationship between lithology, fluid and amplitude anomalies. The integration of various geoscience disciplines and data types resulted in substantial reduction in overall prospect risk. The study concluded that Prospect-N has the lowest overall risk and presents a promising location for the next exploration well in the block.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201900726
2019-06-03
2024-04-18

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201900726
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The Integration of Geoscience Disciplines to Reduce the Risk - A Case Study from Niger Delta
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201900726
/content/papers/10.3997/2214-4609.201900726
/content/papers/10.3997/2214-4609.201900726
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