Assessment of undiscovered conventional oil and gas resources of India and Sri Lanka, 2024
September 10, 2025
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 1.0 billion barrels of oil and 53.4 trillion cubic feet of gas in India and Sri Lanka.
Citation Information
| Publication Year | 2025 |
|---|---|
| Title | Assessment of undiscovered conventional oil and gas resources of India and Sri Lanka, 2024 |
| DOI | 10.3133/fs20253043 |
| Authors | Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake II, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kira K. Timm |
| Publication Type | Report |
| Publication Subtype | USGS Numbered Series |
| Series Title | Fact Sheet |
| Series Number | 2025-3043 |
| Index ID | fs20253043 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Central Energy Resources Science Center |
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USGS National and Global Oil and Gas Assessment Project—India and Sri Lanka Provinces: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables USGS National and Global Oil and Gas Assessment Project—India and Sri Lanka Provinces: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables
This data release contains the boundaries of assessment units, assessment input data, and resulting fact sheet data tables for the assessment of undiscovered conventional oil and gas resources of India and Sri Lanka. The assessment unit is the fundamental unit used in the National and Global Oil and Gas Assessment Project for the assessment of undiscovered oil and gas resources. The...
Sarah Gelman
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Geologist (Basin Modeler)
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Benjamin Johnson
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Jenny LaGesse
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Heidi Leathers-Miller
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USGS National and Global Oil and Gas Assessment Project—India and Sri Lanka Provinces: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables USGS National and Global Oil and Gas Assessment Project—India and Sri Lanka Provinces: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables
This data release contains the boundaries of assessment units, assessment input data, and resulting fact sheet data tables for the assessment of undiscovered conventional oil and gas resources of India and Sri Lanka. The assessment unit is the fundamental unit used in the National and Global Oil and Gas Assessment Project for the assessment of undiscovered oil and gas resources. The...
Sarah Gelman
Geologist (Basin Modeler)
Geologist (Basin Modeler)
Email
Phone
Benjamin Johnson
Assessment Geologist
Assessment Geologist
Email
Phone
Jenny LaGesse
Assessment Geologist
Assessment Geologist
Email
Phone
Heidi Leathers-Miller
Petroleum Engineer
Petroleum Engineer
Phone