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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
20,642 22,159 22,199 23,001 23,633 18,226 1979-2012
Adjustments
91 -70 474 578 921 -468 1979-2012
Revision Increases
3,823 3,154 1,661 2,985 2,522 1,727 1979-2012
Revision Decreases
584 3,092 4,039 3,763 2,808 4,579 1979-2012
Sales
769 774 382 253 1,292 1,747 2000-2012
Acquisitions
448 1,382 446 81 1,278 298 2000-2012
Extensions
2,713 2,252 3,330 2,668 1,617 922 1979-2012
New Field Discoveries
15 18 8 23 19 3 1979-2012
New Reservoir Discoveries in Old Fields
24 17 0 29 0 0 1979-2012
Estimated Production
1,260 1,370 1,458 1,546 1,625 1,563 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