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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2013 2014 2015 2016 2017 2018 View
History
Proved Reserves as of Dec. 31
2,718 2,926 2,279 1,862 2,092 1,618 1977-2018
Adjustments
-160 370 -471 -24 212 -233 1977-2018
Revision Increases
275 326 449 344 400 105 1977-2018
Revision Decreases
502 568 500 638 360 220 1977-2018
Sales
85 209 45 106 44 31 2000-2018
Acquisitions
272 286 53 53 165 5 2000-2018
Extensions and Discoveries
      183 81 105 2016-2018
Extensions
247 262 165 -- -- -- 1977-2018
New Field Discoveries
0 32 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
21 56 33 -- -- -- 1977-2018
Estimated Production
379 347 331 229 224 205 1977-2018
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: W -- Individual state volumes are withheld to avoid disclosure of operator-level reserves data, due to statistical precision requirements, or due to other data quality reasons. The individual state volumes are included in the U.S. Total volume.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/12/2019
Next Release Date: 11/20/2020