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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
9,557 12,593 17,205 20,281 22,343 24,363 1977-2010
Adjustments
93 84 97 -61 96 27 1977-2010
Revision Increases
1,216 2,318 3,223 2,689 1,904 1,577 1977-2010
Revision Decreases
398 683 952 1,013 1,458 1,274 1977-2010
Sales
347 661 23 651 31 1 2000-2010
Acquisitions
348 804 151 582 277 5 2000-2010
Extensions
2,609 1,953 3,243 3,048 2,992 3,457 1977-2010
New Field Discoveries
0 4 0 0 0 0 1977-2010
New Reservoir Discoveries in Old Fields
163 0 3 3 0 0 1977-2010
Estimated Production
650 783 1,130 1,521 1,718 1,771 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