Abu Dhabi
http://www.adnoc.com/
Ancap,
Uruguay
http://www.ancap.com.uy
Bharat
Petroleum
http://www.bharatpetroleum.com/
China
offshore oil corporation
http://www.cooprc.com/
China NPC
http://www.cnpc.com.cn/
China
Petroleum Corporation, Taiwan
http://www.cpc.com.tw
DONG
http://www.dong.dk/
Ecopetrol, Colombia
http://www.ecopetrol.com.co/
EGPC
http://www.egpc.com.eg/
ENAP,
Chile
http://www.enap.cl
ETAP Tunisia
http://www.etap.com.tn/
Gail, India
http://www.gail.nic.in/
GE petrol
http://www.equatorialoil.com
Hellenic
Petroleum
http://www.dep.gr
and alternatively http://www.hellenic-petroleum.gr
JNOC Japan
http://www.jnoc.go.jp/
Kazakhoil
http://www.kazakhoil.kz/eng/
Korean
National oil company
http://www.knoc.co.kr
Kuwait,
NPC
http://www.knpc.com.kw/
Kufpec
http://www.kufpec.com
Libyan NOC
http://www.noclibya.com/eng
Mossgas
http://www.mossgas.com
Nigerian
National petroleum company
http://www.nigerianoil-gas.com/upstream/nnpc.htm
NIOC Iran
http://www.nioc.org
NISOC
http://www.nisoc.com
OKIOC
http://www.okioc.kz/
Onarep, Morocco
http://www.onarep.com
ONGC India
http://www.ongcindia.com/
Pakistan
State oil company
http://www.psocl.com
PDO Oman
http://www.pdo.co.om
PDVSA, Venezuala
http://www.pdvsa.pdv.com/
Pemex, Spain
http://www.pemex.com/
Pertamina, Indonesia
http://www.pertamina.com/
Perupetro, Peru
http://www.perupetro.com.pe
Petoro, Norway
http://www.petoro.no/eng/
Petrobras, Brazil
http://www.petrobras.com.br/
PetroEcuador
http://www.petroecuador.com.ec
Petroguin, Guinea Bissau
http://www.petroguin.com/
Petronas, Malaysia
http://www.petronas.com/
PetroSA, South Africa
http://www.petrosa.co.za
Petrotrin, Trinidad and Tobago
http://www.petrotrin.com/
Petro, Vietnam
http://www.petrovietnam.com.vn
PNOC, Philippines
http://www.pnoc.com.ph/
POGC, Poland
http://www.pgnig.com.pl/
POGC, Geonafta, Poland
http://ww.pgnig.com.pl/geonafta
PTT, Thailand
http://www.ptt-ep.com/
Qatar General
Petroleum Corporation
http://www.qgpc.com.qa/
Rompetrol, Romania
http://www.petrom.ro
Rosneft, Russia
http://www.rosneft.ru/english/main.html
Sasol, South Africa
http://www.sasol.com/
Saudi Aramco, Saudi Arabia
http://www.saudiaramco.com/
Sinopec, China
http://www.sinopec.com/
Sonatrach, Algeria
http://www.sonatrach-dz.com/
Statsolie, Suriname
http://www.statsolie.com
Sudan
http://www.spc-sudan.com
Tanzanian PDC
http://www.tpdc-tz.com
TPAO, Turkey
http://tpao.gov.tr/
Yemen
Petroleum
Exploration Authority
http://www.pera.com.ye
