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|View History: Annual Download Data (XLS File)                               
|View History: Annual                                                         
|View History: Annual                                                         
|View History:                                                                
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|Pennsylvania Dry Natural Gas Reserves Revision Increases (Billion Cubic Feet)
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|Pennsylvania Dry Natural Gas Reserves Revision Increases (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                                                                                                                            |        |        |        |        |        |        |        | 17     | 15     | 34    
|1980's                                                                                                                            | 23     | 70     | 125    | 137    | 277    | 188    | 202    | 109    | 121    | 126   
|1990's                                                                                                                            | 167    | 88     | 136    | 177    | 315    | 95     | 243    | 519    | 218    | 642   
|2000's                                                                                                                            | 417    | 201    | 330    | 241    | 657    | 234    | 185    | 326    | 655    | 668   
|2010's                                                                                                                            | 2,892  | 7,077  | 5,466  | 7,166  | 8,633  | 10,899 | 7,981  | 13,043 | 4,377  | 4,653 
|2020's                                                                                                                            | 1,749  | 2,924  |        |        |        |        |        |        |        |       
|- = 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