OPEC

Niger Delta Chevron Corporation List of countries by natural gas imports Blowout (well drilling) Geosteering New international economic order Arab-Israeli conflict Upstream (oil industry) Indonesia Petrodollar Warfare Kenneth S. Deffeyes Concession (contract) Nigeria Drilling engineering BP Gasoline Cartel Pumpjack Downstream (oil industry) Tracer use in the oil industry Reservoir simulation Occupation of Iraq List of oil-producing states Baghdad Algeria International Energy Agency List of countries by natural gas production Statutes Iraq National oil company September 11, 2001 attacks 1980s oil glut Oil reserves Oil well Daniel Yergin Gulf War Le Monde diplomatique Supermajor List of countries by energy consumption per capita Price fixing Drilling fluid invasion SUCRE (currency) New York Times CIA World Factbook Petroleum Underbalanced drilling Energy development Production sharing agreements Economy of Iraq Production quota Oil reserves in Russia U.S. dollar Seismic to simulation Completion (oil and gas wells) Angola Economy of Kuwait Qatar Official language Chart of exports and production of oil by nation Well intervention Athabasca oil sands Romulo Betancourt APNPP Water injection (oil production) Petroleum industry East Texas Oil Field Abdullah al-Tariki Oil reserves in Venezuela Area 2000s energy crisis Extraction of petroleum List of countries by oil exports Total S.A. ConocoPhillips ExxonMobil Agriculture Ahmed Zaki Yamani Oil price increases since 2003 Peak oil Iran Price of petroleum Middle East Western Europe Economy of Iran Austria Vienna Reflection seismology Gas reinjection 1 E12 m² Post-Soviet states Oil industry List of countries by energy intensity Hydrocarbon exploration Enhanced oil recovery Saddam Hussein 1973 energy crisis Economy of Angola

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Aragonés - OPEP
العربية - أوبك
مصرى - اوبيك
Asturianu - Organización de Países Esportadores de Petroleu
Azərbaycan - Neft İxrac Edən Ölkələr Birliyi
Žemaitėška - OPEC
Беларуская (тарашкевіца) - Арганізацыя краін-экспартэраў нафты
Български - Организация на страните износителки на петрол
বাংলা - ওপেক
Bosanski - OPEC
Català - Organització de Països Exportadors de Petroli
Česky - Organizace zemí vyvážejících ropu
Cymraeg - OPEC
Dansk - OPEC
Deutsch - OPEC
Zazaki - OPEC
Ελληνικά - Οργανισμός εξαγωγών πετρελαιοπαραγωγών χωρών
Esperanto - OPEL
Español - Organización de Países Exportadores de Petróleo
Eesti - OPEC
فارسی - اوپک
Suomi - OPEC
Français - Organisation des pays exportateurs de pétrole
Furlan - OPEC
Gaeilge - Eagraíocht Tíortha Onnmhairithe an Pheitriliam
עברית - אופ"ק
हिन्दी - ओपेक
Hrvatski - OPEC
Magyar - OPEC
Bahasa Indonesia - Organisasi Negara-negara Pengekspor Minyak Bumi
Íslenska - Samtök olíuframleiðsluríkja
Italiano - Organizzazione dei Paesi Esportatori di Petrolio
日本語 - 石油輸出国機構
Basa Jawa - OPEC
ქართული - ნავთობის ექსპორტიორ ქვეყანათა ორგანიზაცია
ಕನ್ನಡ - ಒಪೆಕ್
한국어 - 석유 수출국 기구
Kurdî / كوردی - OPEC
Latina - OPEC
Lëtzebuergesch - Organization of the Petroleum Exporting Countries
Lietuvių - OPEC
Latviešu - OPEC
Македонски - Организација на земји извознички на нафта
മലയാളം - ഒപെക്
Монгол - ОПЕК
Bahasa Melayu - Pertubuhan Negara-negara Pengeksport Petroleum
Nederlands - Organisatie van olie-exporterende landen
‪Norsk (nynorsk)‬ - OPEC
‪Norsk (bokmål)‬ - OPEC
Occitan - Organizacion dels païses exportadors de petròli
Polski - OPEC
Português - Organização dos Países Exportadores de Petróleo
Română - OPEC
Русский - ОПЕК
Sicilianu - OPEC
Srpskohrvatski / Српскохрватски - OPEC
Simple English - Organization of the Petroleum Exporting Countries
Slovenčina - Organizácia krajín vyvážajúcich ropu
Slovenščina - Organizacija držav izvoznic nafte
Shqip - OPEC
Српски / Srpski - OPEK
Svenska - Opec
Kiswahili - Jumuiya ya nchi zinazozalisha mafuta duniani
தமிழ் - ஓப்பெக்
ไทย - โอเปก
Türkçe - OPEC
Uyghurche‎ / ئۇيغۇرچە - نېفىت ئېكىسپورت قىلغۇچى دۆلەتلەر تەشكىلاتى (OPEC)
Українська - ОПЕК
اردو - اوپیک
- OPEC
Tiếng Việt - Tổ chức các nước xuất khẩu dầu lửa
Winaray - Katig-uban han mga Nasod nga Nageexport hin Lana
中文 - 石油输出国组织
Bân-lâm-gú - Chio̍h-iû Su-chhut Kok-ka Cho͘-chit