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Assessment of undiscovered shale-gas resources in the Grand Erg/Ahnet Basin Province of Algeria, 2026

Michael E. Brownfield·Christopher J. Schenk·Tracey J. Mercier·Marilyn E. Tennyson·Cheryl A. Woodall·Thomas M. Finn·Phuong A. Le·Heidi M. Leathers-Miller·Janet K. Pitman·Ronald M. Drake·Stephanie B. Gaswirth
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Abstract

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 80.1 trillion cubic feet of shale gas in the Grand Erg/Ahnet Basin Province of Algeria.

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 24° to 34° latitude; -6° to 6° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Michael E. Brownfield, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Cheryl A. Woodall, Thomas M. Finn, Phuong A. Le, Heidi M. Leathers-Miller, Janet K. Pitman, Ronald M. Drake, Stephanie B. Gaswirth. 2026-04-22. Assessment of undiscovered shale-gas resources in the Grand Erg/Ahnet Basin Province of Algeria, 2026. https://doi.org/10.3133/fs20263005

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