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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2016 2017 2018 2019 2020 2021 View
History
Proved Reserves as of Dec. 31
569 611 593 613 555 715 1977-2021
Adjustments
-116 18 43 90 -29 30 1977-2021
Revision Increases
89 73 51 1 156 106 1977-2021
Revision Decreases
43 5 62 65 145 27 1977-2021
Divestitures
46 1 8 1 0 42 2000-2021
Acquisitions
43 0 0 5 0 130 2000-2021
Extensions and Discoveries
1 4 3 37 1 5 2016-2021
Extensions
-- -- -- -- -- -- 1977-2021
New Field Discoveries
-- -- -- -- -- -- 1977-2021
New Reservoir Discoveries in Old Fields
-- -- -- -- -- -- 1977-2021
Estimated Production
51 47 45 47 41 42 1977-2021
- = 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: 12/30/2022
Next Release Date: 12/29/2023