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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
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
53,175 58,736 68,827 74,284 76,272 84,157 1981-2010
Adjustments
517 875 -11 -8 864 1,057 1981-2010
Revision Increases
5,612 5,953 8,776 8,399 7,249 10,189 1981-2010
Revision Decreases
5,549 7,636 4,523 7,958 9,534 8,835 1981-2010
Sales
3,821 4,751 5,819 2,948 1,850 2,075 2000-2010
Acquisitions
4,525 6,401 6,142 2,983 1,325 2,254 2000-2010
Extensions
9,817 9,768 10,912 11,039 9,734 11,332 1981-2010
New Field Discoveries
147 80 81 512 497 488 1981-2010
New Reservoir Discoveries in Old Fields
345 241 562 167 419 116 1981-2010
Estimated Production
5,146 5,370 6,029 6,729 6,716 6,641 1981-2010
- = 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