| National Historical Proved Reserves of Crude Oil, NGL and Natural Gas |
| Year |
Crude Oil
(million bbl) |
Crude Oil
and NGL (million bbl) |
Crude Oil
and NGL (million m3) |
Natural Gas (million boe) |
Natural Gas (million m3) |
Crude Oil,
NGL and
Natural Gas (million boe) |
Crude Oil,
NGL and Natural Gas (million m3) |
| 1953 |
11.7 |
11.7 |
1.9 |
5.1 |
808.6 |
16.8 |
2.7 |
| 1954 |
173.6 |
173.6 |
27.6 |
- |
- |
173.6 |
27.6 |
| 1955 |
254.7 |
254.7 |
40.5 |
- |
- |
254.7 |
40.5 |
| 1956 |
311.4 |
311.4 |
49.5 |
62.5 |
9,933.0 |
373.9 |
59.4 |
| 1957 |
409.4 |
409.4 |
65.1 |
67.7 |
10,762.0 |
477.1 |
75.8 |
| 1958 |
443.8 |
443.8 |
70.6 |
95.5 |
15,183.0 |
539.3 |
85.7 |
| 1959 |
506.5 |
506.5 |
80.5 |
- |
- |
506.5 |
80.5 |
| 1960 |
563.1 |
563.1 |
89.5 |
114.0 |
18,129.2 |
677.1 |
107.6 |
| 1961 |
583.2 |
583.2 |
92.7 |
124.1 |
19,722.4 |
707.3 |
112.4 |
| 1962 |
627.9 |
627.9 |
99.8 |
86.0 |
13,671.7 |
713.9 |
113.5 |
| 1963 |
618.9 |
618.9 |
98.4 |
85.4 |
13,578.3 |
704.3 |
112.0 |
| 1964 |
677.4 |
677.4 |
107.7 |
109.9 |
17,475.8 |
787.3 |
125.2 |
| 1965 |
676.3 |
676.3 |
107.5 |
142.8 |
22,709.1 |
819.1 |
130.2 |
| 1966 |
713.4 |
713.4 |
113.4 |
168.4 |
26,770.9 |
881.8 |
140.2 |
| 1967 |
815.3 |
815.3 |
129.6 |
165.5 |
26,305.0 |
980.8 |
155.9 |
| 1968 |
871.6 |
871.6 |
138.6 |
184.8 |
29,386.3 |
1,056.5 |
168.0 |
| 1969 |
923.8 |
923.8 |
146.9 |
179.2 |
28,484.9 |
1,103.0 |
175.4 |
| 1970 |
882.1 |
882.1 |
140.2 |
181.7 |
28,888.3 |
1,063.8 |
169.1 |
| 1971 |
879.8 |
879.8 |
139.9 |
183.1 |
29,117.6 |
1,063.0 |
169.0 |
| 1972 |
822.8 |
822.8 |
130.8 |
176.7 |
28,092.7 |
999.5 |
158.9 |
| 1973 |
792.2 |
792.2 |
125.9 |
176.3 |
28,035.5 |
968.6 |
154.0 |
| 1974 |
773.8 |
773.8 |
123.0 |
181.5 |
28,854.5 |
955.3 |
151.9 |
| 1975 |
788.4 |
788.4 |
125.3 |
189.6 |
30,140.2 |
978.0 |
155.5 |
| 1976 |
904.9 |
904.9 |
143.9 |
243.3 |
38,683.1 |
1,148.2 |
182.5 |
| 1977 |
1,147.7 |
1,147.7 |
182.5 |
283.4 |
45,060.9 |
1,431.1 |
227.5 |
| 1978 |
1,158.0 |
1,158.0 |
184.1 |
312.7 |
49,715.8 |
1,470.8 |
233.8 |
| 1979 |
1,283.8 |
1,283.8 |
204.1 |
316.0 |
50,243.0 |
1,599.8 |
254.3 |
| 1980 |
1,364.6 |
1,364.6 |
216.9 |
353.6 |
56,210.4 |
1,718.1 |
273.2 |
| 1981 |
1,600.0 |
1,600.0 |
254.4 |
420.0 |
66,770.1 |
2,020.0 |
321.1 |
| 1982 |
1,855.2 |
1,855.2 |
295.0 |
505.4 |
80,348.7 |
2,360.6 |
375.3 |
| 1983 |
2,128.3 |
2,128.3 |
338.4 |
603.8 |
95,992.9 |
2,732.0 |
434.3 |
| 1984 |
2,379.5 |
2,379.5 |
378.3 |
623.0 |
99,047.8 |
3,002.5 |
477.3 |
| 1985 |
2,655.4 |
2,655.4 |
422.2 |
694.3 |
110,374.7 |
3,349.7 |
532.5 |
| 1986 |
2,904.6 |
2,904.6 |
461.8 |
723.5 |
115,029.3 |
3,628.1 |
576.8 |
| 1987 |
3,013.2 |
3,013.2 |
479.1 |
774.6 |
123,153.5 |
3,787.9 |
602.2 |
| 1988 |
4,816.2 |
4,848.4 |
770.8 |
1,111.9 |
176,768.9 |
5,960.3 |
947.6 |
| 1989 |
4,777.8 |
4,836.1 |
768.9 |
1,148.8 |
182,643.4 |
5,984.9 |
951.5 |
| 1990 |
4,451.1 |
4,513.2 |
717.5 |
1,082.0 |
172,018.6 |
5,595.2 |
889.5 |
| 1991 |
4,750.8 |
4,818.5 |
766.1 |
1,141.8 |
181,522.6 |
5,960.3 |
947.6 |
| 1992 |
4,891.9 |
4,965.9 |
789.5 |
1,211.0 |
192,534.1 |
6,176.9 |
982.0 |
| 1993 |
4,886.8 |
4,982.3 |
792.1 |
1,201.8 |
191,071.0 |
6,184.1 |
983.2 |
| 1994 |
5,281.8 |
5,374.6 |
854.5 |
1,250.2 |
198,760.8 |
6,624.8 |
1,053.2 |
| 1995 |
6,126.9 |
6,223.2 |
989.4 |
1,308.1 |
207,963.7 |
7,531.3 |
1,197.3 |
| 1996 |
6,595.7 |
6,680.9 |
1,062.1 |
1,406.2 |
223,561.7 |
8,087.1 |
1,285.7 |
| 1997 |
7,021.5 |
7,106.2 |
1,129.8 |
1,431.9 |
227,650.0 |
8,538.1 |
1,357.4 |
| 1998 |
7,265.8 |
7,357.5 |
1,169.7 |
1,421.2 |
225,943.8 |
8,778.7 |
1,395.7 |
| 1999 |
8,041.4 |
8,081.4 |
1,284.8 |
1,438.5 |
228,691.5 |
9,519.8 |
1,513.5 |
| 2000 |
8,240.0 |
8,288.7 |
1,317.8 |
1,359.0 |
216,051.6 |
9,647.7 |
1,533.8 |
| 2001 |
8,275.2 |
8,321.7 |
1,323.0 |
1,348.5 |
214,390.5 |
9,670.2 |
1,537.4 |
| 2002 |
9;509.8 |
9;556.8 |
1,519.4 |
1,451.8 |
230,811.9 |
11,008.5 |
1,750.2 |
| 2003 |
10,535.45 |
10,612.80 |
1,687.30 |
1,988.80 |
316,182.60 |
12,601.60 |
2,003.40 |
| 2004 |
10,977.18 |
11,053.45 |
1,757.31 |
1,969.10 |
313,051.83 |
13,022.53 |
2,070.36 |
2005 |
11,302.55 |
11,364.75 |
1,806.80 |
1,867.76 |
296,941.32 |
13,232.52 |
2,103.74 |
| 2006 |
11,591.45 |
11,671.11 |
1,855.50 |
2,082.16 |
331,026.58 |
13,753.27 |
2,186.53 |
| 2007 |
11,722.46 |
11,801.72 |
1,876.27 |
2,117.94 |
336,714.81 |
13,919.66 |
2,212.98 |
Data based on the SPE (Society of Petroleum Engineers) criterion for estimating reserves, wich was implemented from 1998 onwards.
For previous years, a conversion rule was used, in line with the reserves classification method formerly adopted by Petrobras. The code used previously placed greater emphasis on volume (the certainty of the existence of volumes) rather than economic (certainty of the economic viability of the reserve) aspects, with greater detail in the classification of volume of proven reserves.
The values shown by Petrobras relate only to its interest in the concessions, that is the volume of the reserves corresponding to the percentage participation contractually established together with the other partners in a given production concession.
Annual update
Last updated: January 2008
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