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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
2,628 2,453 2,326 2,308 2,091 1,965 1979-2012
Adjustments
16 74 -105 56 -29 164 1979-2012
Revision Increases
445 324 456 419 355 608 1979-2012
Revision Decreases
444 491 338 288 225 655 1979-2012
Sales
565 70 152 157 259 224 2000-2012
Acquisitions
483 59 147 202 219 175 2000-2012
Extensions
269 349 270 181 106 122 1979-2012
New Field Discoveries
44 14 58 21 6 7 1979-2012
New Reservoir Discoveries in Old Fields
72 37 12 27 4 8 1979-2012
Estimated Production
481 471 475 479 394 331 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