Table 15. U.S. Methane Emissions from Oil and Gas Operations, 1990-1998
(Million Metric Tons of Methane)
| Source | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | P1998 |
| Natural Gas Systems | |||||||||
| Production | 1.47 | 1.49 | 1.49 | 1.51 | 1.55 | 1.57 | 1.58 | 1.65 | 1.67 |
| Processing | 0.65 | 0.71 | 0.70 | 0.71 | 0.71 | 0.72 | 0.73 | 0.71 | 0.71 |
| Transmission and Storage | 2.10 | 2.21 | 2.23 | 2.15 | 2.11 | 2.14 | 2.11 | 2.20 | 2.20 |
| Distribution | 1.36 | 1.39 | 1.44 | 1.48 | 1.49 | 1.52 | 1.55 | 1.55 | 1.55 |
| Total | 5.58 | 5.80 | 5.86 | 5.85 | 5.86 | 5.95 | 5.97 | 6.12 | 6.14 |
| Oil Wells | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 |
| Oil Refining and Transportation | 0.08 | 0.08 | 0.08 | 0.08 | 0.09 | 0.09 | 0.09 | 0.09 | 0.09 |
| Total | 5.70 | 5.92 | 5.99 | 5.97 | 5.99 | 6.08 | 6.10 | 6.25 | 6.27 |
| P = preliminary data. Notes: Data in this table are revised from the data contained in the previous EIA report, Emissions of Greenhouse Gases in the United States 1997, DOE/EIA-0573(97) (Washington, DC, October 1998). Totals may not equal sum of components due to independent rounding. Sources: National Risk Management Research Laboratory, Methane Emissions From the Natural Gas Industry, Vol. 2, Technical Report, GRI-94/0257.1 and EPA-600-R-96-08 (Research Triangle Park, NC, June 1996), Appendix A; World Oil (February issue, various years); American Gas Association, Gas Facts (various years); Energy Information Administration, Natural Gas Annual, DOE/EIA-0131 (various years); Radian Corporation, Global Emissions of Methane from Petroleum Sources (February 1992); Energy Information Administration, Annual Energy Review 1998, DOE/EIA-0384(98) (Washington, DC, July 1999); Energy Information Administration, Petroleum Supply Annual, DOE/EIA-0340 (Washington, DC, various years). |
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