1887

Abstract

Summary

The Early to Mid-Aptian marks the cessation of rifting via seafloor spreading. Widespread uplift and erosion accompanied this early drift phase, which was likely caused by flexural rebound, though inversion due to tectonic forces may also have contributed ( ).

This drift phase uplift and subsequent erosion significantly impacted Aptian petroleum systems (source rocks, reservoirs, and seals; ). In this study, our objective was to quantify the scale of uplift and erosion to develop a better picture of petroleum system dynamics and risk. Our methodology was to utilize sonic interval transit time of shale intervals in the Gamba and Dentale Formations. In addition, the results derived from sonic interval transit times were corroborated with vitrinite reflectance measurements from another 19 wells. Our analysis identified six (6) anomalous wells in southern Gabon and these were used to estimate net uplift and erosion during the Mid-Aptian.

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2022-11-28
2024-04-27
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References

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