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Estimated Dry Natural Gas contained in Total Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2010 2011 2012 2013 2014 2015 View
History
Proved Reserves as of Dec. 31
2,876 2,519 3,029 2,718 2,926 2,279 1977-2015
Adjustments
3 -36 270 -160 370 -471 1977-2015
Revision Increases
490 604 718 275 326 449 1977-2015
Revision Decreases
615 504 491 502 568 500 1977-2015
Sales
69 586 52 85 209 45 2000-2015
Acquisitions
243 367 100 272 286 53 2000-2015
Extensions
280 100 306 247 262 165 1977-2015
New Field Discoveries
1 47 5 0 32 0 1977-2015
New Reservoir Discoveries in Old Fields
93 24 13 21 56 33 1977-2015
Estimated Production
394 373 359 379 347 331 1977-2015
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Idaho, Illinois, Indiana, Maryland, Missouri, Nebraska, Nevada, Oregon, South Dakota, and Tennessee. Estimated Dry Natural Gas is calculated from Total Natural Gas Proved Reserves.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/14/2016
Next Release Date: 11/30/2017