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|View History: Annual Download Data (XLS File)                                                          
|View History: Annual                                                                                    
|View History: Annual                                                                                    
|View History:                                                                                           
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|Montana Nonassociated Natural Gas, Wet After Lease Separation, Reserves Adjustments (Billion Cubic Feet)
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|Montana Nonassociated Natural Gas, Wet After Lease Separation, Reserves Adjustments (Billion Cubic Feet)
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|Decade                                                                                                                            | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|1970's                                                                                                                            |        |        |        |        |        |        |        |        |        | -68   
|1980's                                                                                                                            | 550    | 56     | -430   | 51     | -58    | 52     | -67    | -22    | 77     | -73   
|1990's                                                                                                                            | 14     | -12    | 56     | -151   | 137    | -5     | 20     | 36     | -13    | 42    
|2000's                                                                                                                            | 10     | 48     | 49     | -21    | -55    | 8      | 12     | 10     | -10    | 56    
|2010's                                                                                                                            | 16     | -25    | 46     | 11     | 41     | 58     | -74    | 24     | 23     | 11    
|2020's                                                                                                                            | -9     | 50     |        |        |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 12/30/2022                                                                                                         
|Next Release Date: 12/29/2023