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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
9,390 11,100 12,587 9,963 8,521 8,947 1979-2013
Adjustments
-38 98 345 211 -609 407 1979-2013
Revision Increases
246 628 932 3,016 177 1,110 1979-2013
Revision Decreases
283 514 223 5,998 1,120 380 1979-2013
Sales
53 69 95 1,282 380 630 2000-2013
Acquisitions
223 21 44 1,519 282 20 2000-2013
Extensions
2,088 2,234 1,207 498 712 196 1979-2013
New Field Discoveries
1 0 0 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
22 14 8 0 51 266 1979-2013
Estimated Production
662 702 731 588 555 563 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