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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, Proved Reserves (Billion Cubic Feet)
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|Montana Associated-Dissolved Natural Gas, Wet After Lease Separation, Proved Reserves (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                                                                                                                            |        |        |        |        |        |        |        |        |        | 51    
|1980's                                                                                                                            | 122    | 89     | 81     | 108    | 77     | 91     | 98     | 97     | 101    | 68    
|1990's                                                                                                                            | 86     | 66     | 61     | 53     | 55     | 53     | 51     | 42     | 52     | 67    
|2000's                                                                                                                            | 70     | 85     | 94     | 112    | 130    | 161    | 195    | 219    | 197    | 312   
|2010's                                                                                                                            | 302    | 270    | 289    | 304    | 325    | 321    | 255    | 294    | 260    | 327   
|2020's                                                                                                                            | 260    | 305    |        |        |        |        |        |        |        |       
|- = 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