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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
20,420 22,602 24,686 28,147 17,587 19,354 1979-2013
Adjustments
21 130 65 646 -951 207 1979-2013
Revision Increases
2,710 1,921 1,596 3,708 338 3,185 1979-2013
Revision Decreases
1,019 1,412 1,290 2,182 8,291 739 1979-2013
Sales
650 32 1 10,683 539 94 2000-2013
Acquisitions
587 281 5 10,823 274 581 2000-2013
Extensions
3,074 3,029 3,504 3,071 384 188 1979-2013
New Field Discoveries
0 0 0 2 0 0 1979-2013
New Reservoir Discoveries in Old Fields
3 0 0 0 3 24 1979-2013
Estimated Production
1,530 1,735 1,795 1,924 1,778 1,585 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