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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
2,737 2,658 2,612 2,475 2,156 1,832 1979-2013
Adjustments
-12 149 -49 -92 31 -97 1979-2013
Revision Increases
330 298 339 237 253 343 1979-2013
Revision Decreases
324 406 225 301 515 296 1979-2013
Sales
112 100 91 121 100 510 2000-2013
Acquisitions
180 186 150 148 52 286 2000-2013
Extensions
381 116 94 218 164 170 1979-2013
New Field Discoveries
0 0 0 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
1 3 1 2 4 0 1979-2013
Estimated Production
340 325 265 228 208 220 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