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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
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of Dec. 31
7,846 9,390 11,100 12,587 9,963 8,521 1979-2012
Adjustments
4 -38 98 345 211 -609 1979-2012
Revision Increases
554 246 628 932 3,016 177 1979-2012
Revision Decreases
116 283 514 223 5,998 1,120 1979-2012
Sales
48 53 69 95 1,282 380 2000-2012
Acquisitions
6 223 21 44 1,519 282 2000-2012
Extensions
1,302 2,088 2,234 1,207 498 712 1979-2012
New Field Discoveries
0 1 0 0 0 0 1979-2012
New Reservoir Discoveries in Old Fields
18 22 14 8 0 51 1979-2012
Estimated Production
534 662 702 731 588 555 1979-2012
- = 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: 4/10/2014
Next Release Date: 4/30/2015