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Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2011 2012 2013 2014 2015 2016 View
History
Proved Reserves as of Dec. 31
16,138 14,553 14,567 16,426 15,437 14,372 1979-2016
Adjustments
107 79 -206 592 -57 104 1979-2016
Revision Increases
2,267 2,555 3,649 3,657 1,506 4,713 1979-2016
Revision Decreases
2,386 3,500 2,985 2,130 3,881 5,776 1979-2016
Sales
1,088 344 768 16 985 151 2000-2016
Acquisitions
1,155 127 641 69 2,569 382 2000-2016
Extensions and Discoveries
          941 2016-2016
Extensions
802 745 827 945 1,148 -- 1979-2016
New Field Discoveries
3 2 0 1 0 -- 1979-2016
New Reservoir Discoveries in Old Fields
9 5 98 4 1 -- 1979-2016
Estimated Production
1,260 1,254 1,242 1,263 1,290 1,278 1979-2016
- = 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.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 2/13/2018
Next Release Date: 10/31/2018