Table 4.3  Crude Oil, Natural Gas, and Natural Gas Liquids Proved Reserves, 1949-2010


Year
Crude Oil 1 Natural Gas (Dry) Natural Gas Liquids 1 Total
Thousand Barrels Million Cubic Feet 2 Thousand Barrels COE 3 Thousand Barrels Thousand Barrels COE 3  Thousand Barrels COE 3
  American Petroleum Institute and American Gas Association Data
1949
24,649,489 179,401,693 32,013,150   3,729,012 3,069,146 59,731,785  
1950
25,268,398 184,584,745 32,938,034   4,267,663 3,495,219 61,701,652  
1951
27,468,031 192,758,910 34,396,665   4,724,602 3,859,969 65,724,665  
1952
27,960,554 198,631,566 35,444,605   4,996,651 4,055,723 67,460,882  
1953
28,944,828 210,298,763 37,526,546   5,437,922 4,399,613 70,870,987  
1954
29,560,746 210,560,931 37,573,328   5,244,457 4,215,801 71,349,876  
1955
30,012,170 222,482,544 39,700,668   5,438,565 4,354,335 74,067,174  
1956
30,434,649 236,483,215 42,199,003   5,902,332 4,710,560 77,344,213  
1957
30,300,405 245,230,137 43,759,839   5,687,360 4,535,375 78,595,619  
1958
30,535,917 252,761,792 45,103,817   6,204,018 4,959,247 80,598,981  
1959
31,719,347 261,170,431 46,604,288   6,522,308 5,168,231 83,491,867  
1960
31,613,211 262,326,326 46,810,551   6,816,059 5,388,189 83,811,951  
1961
31,758,505 266,273,642 47,514,925   7,049,096 5,554,843 84,828,274  
1962
31,389,223 272,278,858 48,586,520   7,311,517 5,757,100 85,732,843  
1963
30,969,990 276,151,233 49,084,826   7,673,978 6,033,002 86,087,818  
1964
30,990,510 281,251,454 50,044,743   7,746,632 6,090,119 87,125,372  
1965
31,352,391 286,468,923 50,973,118   8,023,534 6,297,907 88,623,416  
1966
31,452,127 289,332,805 51,528,549   8,328,966 6,522,291 89,502,968  
1967
31,376,670 292,907,703 52,118,808   8,614,231 6,719,369 90,214,847  
1968
30,707,117 287,349,852 51,075,338   8,598,108 6,680,737 88,463,192  
1969
29,631,862 275,108,835 48,899,544   8,143,174 6,273,632 84,805,038  
1970
39,001,335 290,746,408 51,679,063   7,702,941 5,893,604 96,574,002  
1971
38,062,957 278,805,618 49,556,633   7,304,227 5,537,701 93,157,291  
1972
36,339,408 266,084,846 47,111,340   6,786,559 5,098,842 88,549,590  
1973
35,299,839 249,950,207 43,997,572   6,454,707 4,824,146 84,121,557  
1974
34,249,956 237,132,497 41,866,613   6,350,449 4,704,036 80,820,605  
1975
32,682,127 228,200,176 40,169,015   6,267,830 4,605,312 77,456,455  
1976
30,942,166 216,026,074 37,992,626   6,401,967 4,683,224 73,618,016  
1977
29,486,402 208,877,878 36,767,801   5,994,365 4,372,257 70,626,461  
1978
27,803,760 200,301,707 35,190,040   5,925,852 4,306,578 67,300,378  
1979
27,051,289 194,916,624 34,310,267   5,655,323 4,143,094 65,504,649  
  U.S. Energy Information Administration Data
1977
31,780,000 207,413,000 36,511,840   NA NA NA  
1978
31,355,000 208,033,000 36,549,246   6,772,000 5,047,672 72,951,918  
1979
29,810,000 200,997,000 35,382,403   6,615,000 4,886,607 70,079,010  
1980
29,805,000 199,021,000 35,206,129   6,728,000 4,958,616 69,969,744  
1981
29,426,000 201,730,000 35,720,122   7,068,000 5,216,869 70,362,991  
1982
27,858,000 201,512,000 35,716,265   7,221,000 5,270,024 68,844,289  
1983
27,735,000 200,247,000 35,595,631   7,901,000 5,691,574 69,022,205  
1984
28,446,000 197,463,000 35,100,751   7,643,000 5,466,250 69,013,001  
1985
28,416,000 193,369,000 34,406,346   7,944,000 5,647,356 68,469,702  
1986
26,889,000 191,586,000 34,023,031   8,165,000 5,766,899 66,678,930  
1987
27,256,000 187,211,000 33,278,369   8,147,000 5,753,272 66,287,642  
1988
26,825,000 168,024,000 29,809,775   8,238,000 5,804,431 62,439,206  
1989
26,501,000 167,116,000 29,706,310   7,769,000 5,525,755 61,733,065  
1990
26,254,000 169,346,000 30,044,316   7,586,000 5,375,594 61,673,911  
1991
24,682,000 167,062,000 29,667,907   7,464,000 5,262,334 59,612,241  
1992
23,745,000 165,015,000 29,304,388   7,451,000 5,245,328 58,294,716  
1993
22,957,000 162,415,000 28,758,656   7,222,000 5,082,074 56,797,730  
1994
22,457,000 163,837,000 29,038,696   7,170,000 5,027,545 56,523,241  
1995
22,351,000 165,146,000 29,213,758   7,399,000 5,194,188 56,758,946  
1996
22,017,000 166,474,000 29,448,677   7,823,000 5,482,661 56,948,337  
1997
22,546,000 167,223,000 29,581,172   7,973,000 5,573,290 57,700,462  
1998
21,034,000 164,041,000 29,159,702   7,524,000 5,288,030 55,481,732  
1999
21,765,000 167,406,000 29,642,407   7,906,000 5,528,230 56,935,637  
2000
22,045,000 177,427,000 31,355,634   8,345,000 5,819,467 59,220,101  
2001
22,446,000 183,460,000 32,516,703   7,993,000 5,572,642 60,535,346  
2002
22,677,000 186,946,000 33,005,639 [R] 7,994,000 5,550,585 61,233,223 [R]
2003
21,891,000 189,044,000 33,506,419   7,459,000 5,177,382 60,574,801  
2004
21,371,000 192,513,000 34,054,886   7,928,000 5,464,201 60,890,087  
2005
21,757,000 204,385,000 36,225,479   8,165,000 5,628,926 63,611,406  
2006
20,972,000 211,085,000 37,412,997   8,472,000 5,834,861 64,219,858  
2007
21,317,000 237,726,000 42,093,897 [R] 9,143,000 6,297,888 69,708,784 [R]
2008
19,121,000 244,656,000 43,320,985   9,275,000 6,369,647 68,811,632  
2009
20,682,000 272,509,000 48,158,918   10,190,000 6,995,508 75,836,426  
2010
23,267,000 304,625,000 53,729,547   11,723,000 8,028,494 85,025,042  
1To the extent that lease condensate is measured or estimated it is included in "Natural Gas Liquids";
otherwise, lease condensate is included in "Crude Oil."
Notes:  ·  Data are at end of year.  ·  See "Proved Reserves, Crude Oil," "Proved Reserves, Natural
Gas," and "Proved Reserves, Natural Gas Liquids" in Glossary.
2The American Gas Association estimates of natural gas proved reserves include volumes of natural
gas held in underground storage.  In 1979, this volume amounted to 4.9 trillion cubic feet.  U.S. Energy
Information Administration (EIA) data do not include natural gas in underground storage.
Web Page:  For related information, see http://www.eia.gov/petroleum/.
3Natural gas is converted to crude oil equivalent (COE) by multiplying by the natural gas dry production
approximate heat content (see Table A4) and then dividing by the crude oil production approximate heat
content (see Table A2).  The lease condensate portion of natural gas liquids is converted to COE by
multiplying by the lease condensate production approximate heat content (5.5 million Btu per barrel) and
then dividing by the crude oil production approximate heat content.  Other natural gas liquids are converted
to COE by multiplying by the natural gas plant liquids production approximate heat content (see Table A2)
and then dividing by the crude oil production approximate heat content.
Sources:  American Petroleum Institute and American Gas Association Data:  American Petroleum
Institute, American Gas Association, and Canadian Petroleum Association (published jointly), Reserves of
Crude Oil, Natural Gas Liquids and Natural Gas in the United States and Canada as of December 31,
1979, Volume 34 (June 1980).  U.S. Energy Information Administration Data:  ·  1977-2008—EIA, U.S.
Crude Oil, Natural Gas, and Natural Gas Liquids Reserves, annual reports.  ·  2009 and 2010—EIA,
Summary: U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves 2010 (August 2012), Tables 7
and 17.
R=Revised.  NA=Not available.