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Abstract

Summary

This study presents a 3D numerical modeling of the high-temperature hydrothermal system of Asal-Ghoubbet (Djibouti), located in an active rift within the Afar Depression. A 3D geological model, built from geological, geophysical, and borehole data, was used as a basis for reservoir simulations performed with TemisFlow®. Several scenarios were tested, incorporating the presence of a magmatic chamber, fault geometry, and variations in formation permeability. The basal heat flux was constrained by the thinned lithospheric structure of the rift.

The results highlight the key role of normal faults in guiding and compartmentalizing fluid flow, as well as the strong sensitivity of the system to lithological permeability. This approach enables the reconstruction of thermal transfer dynamics in an active fractured reservoir, identification of preferential convection zones, and reduction of uncertainties regarding the localization of geothermal resources. The Asal-Ghoubbet rift thus stands out as a reference site for the development of integrated modeling tools in active rifting settings.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202521170
2025-10-27
2026-01-16

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References

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/content/papers/10.3997/2214-4609.202521170
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Integrated 3D Modeling of a High-Temperature Geothermal System: Case Study of the Asal-Ghoubbet Rift (Djibouti)
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202521170
/content/papers/10.3997/2214-4609.202521170
/content/papers/10.3997/2214-4609.202521170
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