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Energy Glossary
Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Data Series:
Proved Reserves as of 12/31
Adjustments (+,-)
Revision Increases (+)
Revision Decreases (-)
Sales (-)
Acquisitions (+)
Extensions (+)
New Field Discoveries (+)
New Reservoir Discoveries in Old Fields (+)
Estimated Production (-)
Period:
Annual
Download Series History
Definitions, Sources & Notes
Show Data By:
Data Series
Area
2002
2003
2004
2005
2006
2007
View
History
U.S. Total
22,677
21,891
21,371
21,757
20,972
21,317
1899-2007
Lower 48 States
17,999
17,445
17,044
17,586
17,093
17,154
1977-2007
Federal Offshore
5,009
5,120
4,691
4,483
4,096
3,905
1980-2007
Pacific (California)
565
566
547
441
441
441
1977-2007
Gulf of Mexico (Louisiana)
4,088
4,251
3,919
3,852
3,500
3,320
1981-2007
Gulf of Mexico (Texas)
356
303
225
190
155
144
1977-2007
Alaska
4,678
4,446
4,327
4,171
3,879
4,163
1977-2007
Alabama
51
52
53
55
45
42
1977-2007
Arkansas
49
50
51
40
37
31
1977-2007
California
3,633
3,452
3,376
3,435
3,389
3,322
1977-2007
Coastal Region Onshore
404
395
380
374
375
393
1977-2007
Los Angeles Basin Onshore
330
319
286
300
364
369
1977-2007
San Joaquin Basin Onshore
2,702
2,565
2,523
2,556
2,448
2,351
1977-2007
State Offshore
197
173
187
205
202
209
1977-2007
Colorado
214
217
225
250
274
304
1977-2007
Florida
73
68
65
59
38
32
1977-2007
Illinois
107
125
92
95
89
101
1977-2007
Indiana
15
19
11
16
12
17
1977-2007
Kansas
237
243
245
281
263
206
1977-2007
Kentucky
27
25
27
23
25
24
1977-2007
Louisiana
501
452
427
432
428
458
1981-2007
North
75
66
58
68
68
76
1977-2007
South Onshore
335
314
304
299
312
326
1977-2007
State Offshore
91
72
65
65
48
56
1981-2007
Michigan
61
75
53
62
63
55
1977-2007
Mississippi
179
169
178
189
186
200
1977-2007
Montana
288
315
364
427
419
410
1977-2007
Nebraska
18
16
15
16
14
12
1977-2007
New Mexico
710
677
669
690
705
735
1977-2007
East
699
668
662
682
696
725
1977-2007
West
11
9
7
8
9
10
1977-2007
North Dakota
342
353
389
418
412
482
1977-2007
Ohio
67
66
49
46
49
48
1977-2007
Oklahoma
598
588
570
630
569
530
1977-2007
Pennsylvania
12
13
12
14
20
12
1977-2007
Texas
5,015
4,583
4,613
4,919
4,871
5,122
1977-2007
RRC District 1
50
59
58
65
76
84
1977-2007
RRC District 2 Onshore
54
51
56
62
65
62
1977-2007
RRC District 3 Onshore
218
190
185
179
180
200
1977-2007
RRC District 4 Onshore
28
30
27
40
30
30
1977-2007
RRC District 5
24
20
23
24
24
25
1977-2007
RRC District 6
198
189
187
168
157
160
1977-2007
RRC District 7B
82
68
73
80
89
93
1977-2007
RRC Distict 7C
177
205
206
245
288
326
1977-2007
RRC District 8
1,913
1,513
1,552
1,731
1,717
1,796
1977-2007
RRC District 8A
2,093
2,089
2,090
2,164
2,093
2,179
1977-2007
RRC District 9
113
114
102
103
96
115
1977-2007
RRC District 10
59
48
45
53
53
50
1977-2007
State Offshore
6
7
9
5
3
2
1977-2007
Utah
241
221
215
256
334
355
1977-2007
West Virginia
13
13
11
21
23
28
1977-2007
Wyoming
524
517
628
704
706
690
1977-2007
Miscellaneous
15
16
15
25
26
33
1977-2007
-
= 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.
Release Date: 11/10/2008
Next Release Date: 10/16/2009
