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Nonassociated Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2004 2005 2006 2007 2008 2009 View
History
Proved Reserves as of Dec. 31
46,728 53,175 58,736 68,827 74,284 76,272 1981-2009
Adjustments
738 517 875 -11 -8 864 1981-2009
Revision Increases
6,711 5,612 5,953 8,776 8,399 7,249 1981-2009
Revision Decreases
6,016 5,549 7,636 4,523 7,958 9,534 1981-2009
Sales
2,658 3,821 4,751 5,819 2,948 1,850 2000-2009
Acquisitions
4,029 4,525 6,401 6,142 2,983 1,325 2000-2009
Extensions
6,037 9,817 9,768 10,912 11,039 9,734 1981-2009
New Field Discoveries
277 147 80 81 512 497 1981-2009
New Reservoir Discoveries in Old Fields
322 345 241 562 167 419 1981-2009
Estimated Production
4,992 5,146 5,370 6,029 6,729 6,716 1981-2009
- = 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: 12/30/2010
Next Release Date: 12/30/2011