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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
2,249 2,292 1,837 2,101 2,766 3,986 1979-2012
Adjustments
-162 57 -101 18 153 15 1979-2012
Revision Increases
250 276 194 321 397 212 1979-2012
Revision Decreases
220 384 364 308 572 516 1979-2012
Sales
271 105 23 19 167 11 2000-2012
Acquisitions
318 113 5 29 449 172 2000-2012
Extensions
573 370 80 123 639 1,659 1979-2012
New Field Discoveries
1 7 0 327 0 0 1979-2012
New Reservoir Discoveries in Old Fields
16 24 13 10 36 23 1979-2012
Estimated Production
304 315 259 237 270 334 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