View History:  Annual  
Download Data (XLS File)
Montana Dry Natural Gas Reserves Revision Increases (Billion Cubic Feet)
Montana Dry Natural Gas Reserves Revision Increases (Billion Cubic Feet)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1970's 112 120 45
  1980's 72 102 72 58 54 65 60 57 48 91
  1990's 34 20 22 29 26 133 59 99 119 98
  2000's 130 82 40 46 73 63 65 92 41 132
  2010's 103 43 31 113 89 33 89 73 51 1
  2020's 156 106


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 12/30/2022
Next Release Date: 12/29/2023

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