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|View History: Annual Download Data (XLS File)                                                    
|View History: Annual                                                                              
|View History: Annual                                                                              
|View History:                                                                                     
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|Montana Natural Gas, Wet After Lease Separation Reserves Estimated Production (Billion Cubic Feet)
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|Montana Natural Gas, Wet After Lease Separation Reserves Estimated Production (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                                                                                                                            |        |        |        |        |        |        |        |        |        | 48    
|1980's                                                                                                                            | 62     | 88     | 46     | 51     | 48     | 52     | 42     | 43     | 60     | 44    
|1990's                                                                                                                            | 49     | 49     | 54     | 50     | 50     | 52     | 53     | 56     | 51     | 41    
|2000's                                                                                                                            | 68     | 74     | 78     | 86     | 95     | 101    | 119    | 113    | 115    | 115   
|2010's                                                                                                                            | 94     | 76     | 67     | 64     | 60     | 61     | 53     | 48     | 46     | 49    
|2020's                                                                                                                            | 42     | 43     |        |        |        |        |        |        |        |       
|- = 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