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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
4,944
5,015
4,583
4,613
4,919
4,871
1977-2006
Changes in Reserves During Year
Adjustments (+,-)
-90
188
63
71
64
50
1977-2006
Revision Increases (+)
376
427
362
401
455
340
1977-2006
Revision Decreases (-)
466
232
178
261
229
312
1977-2006
Sales (-)
203
331
639
229
520
100
2000-2006
Acquisitions (+)
143
289
242
281
723
198
2000-2006
Extensions (+)
288
91
77
125
163
128
1977-2006
New Field Discoveries (+)
2
0
3
2
2
1
1977-2006
New Reservoir Discoveries in Old Fields (+)
10
7
2
0
3
2
1977-2006
Estimated Production (-)
389
368
364
360
355
355
1977-2006
Last Updated 05/27/2008
-
= 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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