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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
204,385 211,085 237,726 244,656 272,509 304,625 1925-2010
Adjustments
1,887 743 1,147 207 5,098 509 1977-2010
Revision Increases
22,353 20,833 32,174 30,674 31,416 40,521 1977-2010
Revision Decreases
19,654 22,669 16,713 33,802 33,035 36,571 1977-2010
Sales
9,130 22,850 14,740 7,603 4,109 10,153 2000-2010
Acquisitions
11,674 25,846 15,148 8,498 3,968 12,748 2000-2010
Extensions
21,050 21,778 27,107 26,687 42,139 44,783 1977-2010
New Field Discoveries
942 409 796 1,170 1,372 850 1977-2010
New Reservoir Discoveries in Old Fields
1,208 1,155 1,188 1,622 2,598 1,668 1977-2010
Estimated Production
18,458 18,545 19,466 20,523 21,594 22,239 1977-2010
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Illinois, Indiana, Maryland, Missouri, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 8/2/2012
Next Release Date: 8/30/2013