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| Montana Associated-Dissolved Natural Gas, Wet After Lease Separation, Reserves Revision Decreases (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 | 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. |
| Release Date: 12/30/2022 |
| Next Release Date: 12/29/2023 |