Home Reserves Posted June 24, 2007 Reserves Share URL Copied to Clipboard https://ingaa.org/glossary/reserves/ « Back to Glossary IndexNatural gas in natural underground formation in wells, fields or pools. Related Articles: Industry PrioritiesGlossary: Operating ReserveGlossary: Source-Specific Gas Sales ContractGlossary: Subbituminous CoalGlossary: Warranty Contract Reserves« Back to Glossary Index Related Fact Sheets Safety Pivoting to Support a Net-Zero Future – IMCI Program February 21, 2023