XML 91 R74.htm IDEA: XBRL DOCUMENT v3.22.2.2
Supplemental Information on Oil and Natural Gas Operations (Unaudited) - Oil, Natural Gas and NGL Quantities (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2021
MBoe
MMcf
MBbls
Sep. 30, 2021
MBoe
MBbls
MMcf
Sep. 30, 2020
MBoe
MMcf
MBbls
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]      
Beginning balance | MBoe 72,163 56,787  
Extensions and discoveries | MBoe 2,026 13,759  
Revisions | MBoe 133 4,772  
Production | MBoe (915) (3,155)  
Ending balance | MBoe 73,407 72,163  
Proved Developed Reserves, Included Above | MBoe 43,041 41,516 30,186
Proved Undeveloped Reserves, Included Above | MBoe 30,366 30,647 26,601
Oil      
Proved Developed and Undeveloped Reserves [Roll Forward]      
Beginning balance 46,263 37,158  
Extensions and discoveries 1,328 9,308  
Revisions 99 2,138  
Production (669) (2,341)  
Ending balance 47,021 46,263  
Proved Developed Reserves, Included Above 27,096 26,170 19,149
Proved Undeveloped Reserves, Included Above 19,925 20,093 18,009
Natural Gas      
Proved Developed and Undeveloped Reserves [Roll Forward]      
Beginning balance | MMcf 76,019 53,683  
Extensions and discoveries | MMcf 1,961 12,089  
Revisions | MMcf 350 12,850  
Production | MMcf (844) (2,603)  
Ending balance | MMcf 77,486 76,019  
Proved Developed Reserves, Included Above | MMcf 47,974 46,173 31,137
Proved Undeveloped Reserves, Included Above | MMcf 29,512 29,846 22,546
NGLs      
Proved Developed and Undeveloped Reserves [Roll Forward]      
Beginning balance 13,229 10,681  
Extensions and discoveries 371 2,436  
Revisions (24) 492  
Production (105) (380)  
Ending balance 13,471 13,229  
Proved Developed Reserves, Included Above 7,949 7,650 5,847
Proved Undeveloped Reserves, Included Above 5,522 5,579 4,834