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|View History: Annual Download Data (XLS File)                                                                        
|View History: Annual                                                                                                  
|View History: Annual                                                                                                  
|View History:                                                                                                         
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|Montana Associated-Dissolved Natural Gas, Wet After Lease Separation, Reserves Revision Decreases (Billion Cubic Feet)
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|Montana Associated-Dissolved Natural Gas, Wet After Lease Separation, Reserves Revision Decreases (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                                                                                                                            |        |        |        |        |        |        |        |        |        | 8     
|1980's                                                                                                                            | 13     | 20     | 15     | 18     | 19     | 8      | 10     | 8      | 8      | 10    
|1990's                                                                                                                            | 7      | 4      | 8      | 5      | 6      | 3      | 1      | 4      | 7      | 28    
|2000's                                                                                                                            | 10     | 9      | 14     | 3      | 12     | 14     | 19     | 32     | 17     | 65    
|2010's                                                                                                                            | 31     | 34     | 20     | 43     | 49     | 83     | 35     | 2      | 59     | 30    
|2020's                                                                                                                            | 147    | 14     |        |        |        |        |        |        |        |       
|- = 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