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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
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of Dec. 31
12,207 12,806 14,958 15,524 11,204 11,553 1979-2013
Adjustments
-113 426 400 233 -1,035 322 1979-2013
Revision Increases
2,169 1,801 2,732 5,023 1,960 2,107 1979-2013
Revision Decreases
1,807 2,271 2,739 5,621 5,261 1,387 1979-2013
Sales
1,073 370 523 4,045 251 440 2000-2013
Acquisitions
1,097 252 985 4,056 388 551 2000-2013
Extensions
1,433 1,708 2,213 1,726 984 255 1979-2013
New Field Discoveries
2 0 52 2 0 0 1979-2013
New Reservoir Discoveries in Old Fields
2 43 52 277 8 8 1979-2013
Estimated Production
971 990 1,020 1,085 1,113 1,067 1979-2013
- = 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, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/4/2014
Next Release Date: 12/31/2015