| Name | Address | Country | Phone | Website |
| BP | 1 St. James Square, London | Britain | 44-20-7496-4000 | http://www.bp.com/home.do |
| Exxon Mobil | 5959 Las Colinas Blvd., Irving | TX | 972-444-1000 | http://www.exxon.mobil.com |
| Royal Dutch/Shell Group | : Carel van Bylandtlaan 30, The Hague | Britain/Netherlands | 31-70-377-9111 | http://www.shell.com |
| Total | 2 Pl. de la Coupole, Courbevoie | France | 33-1-4744-5853 | http://www.total.com |
| ChevronTexaco | 6001 Bollinger Canyon Rd., San Ramon | CA | 925-842-1000 | http://www.chevrontexaco.com |
| ConocoPhillips | 600 N. Dairy Ashford Rd., Houston | TX | 281-293-1000 | http://www.conocophillips.com |
| Sinopec | A6 Huixindong St., Beijing | China | 86-10-6499-9929 | http://www.sinopec.com.cn |
| ENI | Piazzale E. Mattei 1, Rome | Italy | 39-06-59821 | http://www.eni.it |
| China National Petroleum | 6 Liupukang St., Beijing | China | 86-10-6209-4420 | http://www.cnpc.com.cn |
| Valero Energy | 1 Valero Way, San Antonio | TX | 210-345-2000 | http://www.valero.com |
| Marathon Oil | 5555 San Felipe Rd., Houston | TX | 713-629-6600 | http://www.marathon.com |
| Statoil | Forusbeen 50, Stavanger | Norway | 47-51-99-0000 | http://www.statoil.no |
| Repsol YPF | Paseo de la Castellana 278 Madrid | Spain | 34-91-348-8100 | http://www.repsol-ypf.com |
| SK | 99 Seorin-dong, Jongro-gu, Seoul | South Korea | 82-2-2121-5114 | http://www.sk.com |
| Petrobr?/a> | Ave. Rep. do Chile 65, Rio de Janeiro | Brazil | 55-21-3224-2040 | http://www.petrobras.com.br |
| Petronas | Tower 1,Petronas Twin Tower, KLCC, Kuala Lumpur | Malaysia | 60-3-205-15000 | http://www.petronas.com.my |
| Nippon Oil | 1-3-12 Nishi-Shimbashi, Minato-ku Tokyo | Japan | 81-3-3502-1131 | http://www.eneos.co.jp |
| Indian Oil | 3079/3 Sadiq Nagar, New Delhi, | India | 91-11-2626-0101 | http://www.iocl.com |
| Lukoil | 11 Sretenski Blvd., Moscow | Russia | 7-95-927-4444 | http://www.lukoil.com |
| Sunoco | 1801 Market St., Philadelphia | PA | 215-977-3000 | http://www.sunocoinc.com |
| Idemitsu Kosan | 3-1-1 Marunouchi, Chiyoda-ku Tokyo | Japan | 81-3-3213-3150 | http://www.idemitsu.co.jp |
| Nippon Mining Holdings | 2-10-1 Toranomon, Tokyo | Japan | 81-3-5573-5170 | http://www.shinnikko-hd.co.jp |
| Amerada Hess | 1185 Sixth Ave | New York | 212-997-8500 | http://www.hess.com |
| PTT | 555 Vibhavadi Rangsit Rd., Bangkok | Thailand | 66-2-537-2000 | http://www.pttplc.com |
| Cepsa | Ave. del Parten?n 12, Madrid | Spain | 34-91-337-6000 | http://www.cepsa.es |
| Premcor | 1700 E. Putnam Ave., Old Greenwich | CT | 203-698-7500 | http://www.premcor.com |
| Cosmo Oil | 1-1-1 Shibaura, Minato-ku Tokyo | Japan | 81-3-3798-3211 | http://www.cosmo-oil.co.jp |
| Chinese Petroleum | 3 Songren Rd., Taipei | Taiwan | 886-2-8789-8989 | http://www.cpc.com.tw |
| Reliance Industries | 222 Nariman Point, Mumbai | India | 91-22-3032-5000 | http://www.ril.com |
| Fortum | Keilaniementie 1, Espoo | Finland | 358-10-4511 | http://www.fortum.com |
| Bharat Petroleum | 4 & 6 Currimbhoy Rd., Mumbai | India | 91-22-2271-3000 | http://www.bharatpetroleum.com |
| Hindustan Petroleum | 17 Jamshedji Tata Rd., Mumbai | India | 91-22-2202-6151 | http://www.hindpetro.com |
