World Assessment Summaries
By USGS World Energy Assessment Team
in
U.S. Geological Survey Digital Data Series 60
 
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World Undiscovered Assessment Results Summary
[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. Prob., probability (including both geologic and accessibility probabilities) of at least one field equal to or greater than the minimum assessed field size. Results shown are fully risked estimates. For gas fields, all liquids are included under the NGL (natural gas liquids) category. F95 represents a 95 percent chance of at least the amount tabulated. Other fractiles are defined similarly. Fractiles are additive under the assumption of perfect positive correlation. For  the total of non-U.S. undiscovered petroleum, the resources in oil fields and in gas fields were aggregated by a separate Monte Carlo procedure from that of total resources; thus these lines do not add perfectly. Shading indicates not applicable]
 
Code
and Field 
Type
Prob 
(0-1).
Undiscovered Resources
Oil (MMBO)
Gas (BCFG)
NGL (MMBNGL)
F95
F50
F5
Mean
F95
F50
F5
Mean
F95
F50
F5
Mean
1        Former Soviet Union
Oil Fields
1.00
35,601
107,036
225,654
115,985
72,152
244,123
570,495
272,806
4,016
14,234
35,833
16,336
 Gas Fields
          
357,012
1,230,163
2,676,245
1,338,455
9,476
 34,374
81,427
38,470
Total
1.00
35,601
107,036
225,654
115,985
429,164
1,474,286
3,246,740
1,611,262
13,491
48,608
117,260
54,806
2        Middle East and North Africa
Oil Fields
1.00
73,286
215,651
432,178
229,882
90,484
295,235
678,796
329,248
3,947
13,571
33,943
15,595
 Gas Fields
          
334,887
982,973
1,929,100
1,040,684
20,029
61,249
128,731
66,152
Total
1.00
73,286
215,651
432,178
229,882
425,371
1,278,208
2,607,896
1,369,933
23,976
74,820
162,673
81,747
3        Asia Pacific
Oil Fields
1.00
8,726
27,392
58,653
29,780
17,495
60,806
144,713
68,314
922
3,423
8,876
3,971
 Gas Fields
          
91,573
289,545
601,331
311,025
3,101
10,361
23,278
11,407
Total
1.00
8,726
27,392
58,653
29,780
109,068
350,350
746,044
379,339
4,023
13,784
32,153
15,379
4        Europe
Oil Fields
1.00
6,339
20,091
45,407
22,292
8,328
31,217
80,413
36,134
525
2,121
5,894
2,519
 Gas Fields
          
36,378
238,842
652,999
276,231
1,059
9,205
28,340
11,148
Total
1.00
6,339
20,091
45,407
22,292
44,706
270,060
733,412
312,365
1,584
11,326
34,233
13,667
 
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U. S. Geological Survey Digital Data Series - DDS-60