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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
2,307 2,199 1,937 1,812 2,506 2,451 1977-2018
Adjustments
49 -191 34 47 -109 217 1977-2018
Revision Increases
547 370 310 205 787 379 1977-2018
Revision Decreases
284 264 420 302 84 636 1977-2018
Sales
103 142 24 98 105 143 2000-2018
Acquisitions
130 171 22 225 249 232 2000-2018
Extensions and Discoveries
      61 182 149 2016-2018
Extensions
119 222 112 -- -- -- 1977-2018
New Field Discoveries
3 27 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
9 20 11 -- -- -- 1977-2018
Estimated Production
317 321 307 263 226 253 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