|Crude Oil Proved Reserves, Reserves Changes, and Production(Million Barrels)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |                                                             |  | Crude Oil Proved Reserves, Reserves Changes, and Production                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  | (Million Barrels)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 
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|Area:
			  
		      U.S. TotalFederal OffshoreFederal Offshore, Pacific (California)Federal Offshore, Gulf of Mexico (Louisiana & Alabama)Federal Offshore, Gulf of Mexico (Texas)AlaskaLower 48 StatesAlabamaArkansasCaliforniaCA, Coastal Region OnshoreCA, Los Angeles Basin OnshoreCA, San Joaquin Basin OnshoreCA, State OffshoreColoradoFloridaIllinoisIndianaKansasKentuckyLouisianaNorth LouisianaLA, South OnshoreLA, State OffshoreMichiganMississippiMontanaNebraskaNew MexicoNM, EastNM, WestNorth DakotaOhioOklahomaPennsylvaniaTexasTX, RRC District 1TX, RRC District 2 OnshoreTX, RRC District 3 OnshoreTX, RRC District 4 OnshoreTX, RRC District 5TX, RRC District 6TX, RRC District 7BTX, RRC Distict 7CTX, RRC District 8TX, RRC District 8ATX, RRC District 9TX, RRC District 10TX, State OffshoreUtahWest VirginiaWyoming
              			  
                			  Period:
			  
		      Annual |                                                             |  | Area:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | U.S. TotalFederal OffshoreFederal Offshore, Pacific (California)Federal Offshore, Gulf of Mexico (Louisiana & Alabama)Federal Offshore, Gulf of Mexico (Texas)AlaskaLower 48 StatesAlabamaArkansasCaliforniaCA, Coastal Region OnshoreCA, Los Angeles Basin OnshoreCA, San Joaquin Basin OnshoreCA, State OffshoreColoradoFloridaIllinoisIndianaKansasKentuckyLouisianaNorth LouisianaLA, South OnshoreLA, State OffshoreMichiganMississippiMontanaNebraskaNew MexicoNM, EastNM, WestNorth DakotaOhioOklahomaPennsylvaniaTexasTX, RRC District 1TX, RRC District 2 OnshoreTX, RRC District 3 OnshoreTX, RRC District 4 OnshoreTX, RRC District 5TX, RRC District 6TX, RRC District 7BTX, RRC Distict 7CTX, RRC District 8TX, RRC District 8ATX, RRC District 9TX, RRC District 10TX, State OffshoreUtahWest VirginiaWyoming | 
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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | Area:                                                       |  | U.S. TotalFederal OffshoreFederal Offshore, Pacific (California)Federal Offshore, Gulf of Mexico (Louisiana & Alabama)Federal Offshore, Gulf of Mexico (Texas)AlaskaLower 48 StatesAlabamaArkansasCaliforniaCA, Coastal Region OnshoreCA, Los Angeles Basin OnshoreCA, San Joaquin Basin OnshoreCA, State OffshoreColoradoFloridaIllinoisIndianaKansasKentuckyLouisianaNorth LouisianaLA, South OnshoreLA, State OffshoreMichiganMississippiMontanaNebraskaNew MexicoNM, EastNM, WestNorth DakotaOhioOklahomaPennsylvaniaTexasTX, RRC District 1TX, RRC District 2 OnshoreTX, RRC District 3 OnshoreTX, RRC District 4 OnshoreTX, RRC District 5TX, RRC District 6TX, RRC District 7BTX, RRC Distict 7CTX, RRC District 8TX, RRC District 8ATX, RRC District 9TX, RRC District 10TX, State OffshoreUtahWest VirginiaWyoming |  | Period:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 
|Annual                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|Download Series History  		  
				          
				  
		          
				  Definitions, Sources & Notes
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|Show Data By:                                                                                          
|Show Data By:                                                                                          
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|Proved Reserves as of 12/31                                                                            
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|Changes in Reserves During Year                                                                        
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|Adjustments (+,-)                                                                                      
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|Revision Increases (+)                                                                                 
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|Revision Decreases (-)                                                                                 
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|Divestitures (-)                                                                                       
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|Acquisitions (+)                                                                                       
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|Extensions and Discoveries (+)                                                                         
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|Extensions (+)                                                                                         
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|New Field Discoveries (+)                                                                              
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|New Reservoir Discoveries in Old Fields (+)                                                            
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|Estimated Production (-)                                                                               
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|- = No Data Reported; 	  
	  -- = Not Applicable; 
	  NA = Not Available; 
	  W = Withheld to avoid disclosure of individual company data.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|Notes:
		 W -- Individual state volumes are withheld to avoid disclosure of operator-level reserves data, due to statistical precision requirements, or due to other data quality reasons. The individual state volumes are included in the U.S. Total volume. The volumes in the table above are crude oil ONLY (aka Black Oil), excluding lease condensate. The production estimates in this table are based on data reported on Form EIA-23L, "Annual Survey of Domestic Oil and Gas Reserves." They may differ from the official Energy Information Administration production data for crude oil contained in the "Petroleum Supply Annual." 
		See Definitions, Sources, and Notes link above for more information on this table.
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|Release Date: 12/30/2022                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Next Release Date: 12/29/2023                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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