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Energy Glossary
Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area:
U.S. Total
Lower 48 States
Federal Offshore
Federal Offshore, Pacific (California)
Federal Offshore, Gulf of Mexico (Louisiana)
Federal Offshore, Gulf of Mexico (Texas)
Alaska
Alabama
Arkansas
California
CA, Coastal Region Onshore
CA, Los Angeles Basin Onshore
CA, San Joaquin Basin Onshore
CA, State Offshore
Colorado
Florida
Illinois
Indiana
Kansas
Kentucky
Louisiana
North Louisiana
LA, South Onshore
LA, State Offshore
Michigan
Mississippi
Montana
Nebraska
New Mexico
NM, East
NM, West
North Dakota
Ohio
Oklahoma
Pennsylvania
Texas
TX, RRC District 1
TX, RRC District 2 Onshore
TX, RRC District 3 Onshore
TX, RRC District 4 Onshore
TX, RRC District 5
TX, RRC District 6
TX, RRC District 7B
TX, RRC Distict 7C
TX, RRC District 8
TX, RRC District 8A
TX, RRC District 9
TX, RRC District 10
TX, State Offshore
Utah
West Virginia
Wyoming
Miscellaneous
Period:
Annual
Download Series History
Definitions, Sources & Notes
Show Data By:
Data Series
Area
2001
2002
2003
2004
2005
2006
View
History
Proved Reserves as of 12/31
22,446
22,677
21,891
21,371
21,757
20,972
1899-2006
Changes in Reserves During Year
Adjustments (+,-)
-4
416
163
74
221
94
1977-2006
Revision Increases (+)
1,601
1,925
1,486
1,939
1,544
1,590
1977-2006
Revision Decreases (-)
1,759
1,205
1,392
1,519
975
1,588
1977-2006
Sales (-)
529
804
1,107
937
823
982
2000-2006
Acquisitions (+)
442
828
709
960
1,101
1,176
2000-2006
Extensions (+)
866
492
426
617
805
504
1977-2006
New Field Discoveries (+)
1,407
300
705
33
205
30
1977-2006
New Reservoir Discoveries in Old Fields (+)
292
154
101
132
41
43
1977-2006
Estimated Production (-)
1,915
1,875
1,877
1,819
1,733
1,652
1977-2006
Last Updated 01/02/2008
-
= No Data Reported;
--
= Not Applicable;
NA
= Not Available;
W
= Withheld to avoid disclosure of individual company data.
Notes:
Miscellaneous includes Arizona, Missouri, Nevada, New York, South Dakota, Tennessee, and Virginia. The production estimates in this table are based on data reported on Form EIA-23, "Annual Survey of Domestic Oil and Gas Reserves." They many 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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