1,466 articles
Cerro Negro Oil Field
Cerro Negro is an extra-heavy oil field in the Orinoco Oil Belt of Monagas State, Venezuela, developed from 1998 by PDVSA, ExxonMobil, and Veba Oel.
Ceuta Oil Field
Ceuta Oil Field (Campo Ceuta) is a giant oil field in central-eastern Lake Maracaibo, Venezuela, discovered in April 1956 by the Mene Grande Oil Company.
ChampionX
ChampionX was an American oilfield technology company in The Woodlands, Texas, formed in 2020 from Apergy and Ecolab's upstream energy business, and acquired by SLB in 2025.
Chaoyanggou Oil Field
Chaoyanggou Oil Field (朝阳沟油田) is an onshore oil field in the Songliao Basin, Heilongjiang, China, and the largest low-permeability component of the Daqing Oilfield complex, producing since 1980.
Charles S. Matthews
Charles S. Matthews was an American chemical engineer and reservoir engineer who spent over 40 years at Shell Oil and co-authored SPE's first monograph, Pressure Build-Up and Flow Tests in Wells (1967).
Cheiron Petroleum Corp
Cheiron Petroleum Corp is a privately held Egyptian independent oil and gas company, formerly PICO International Petroleum, that revitalizes mature fields in Egypt, Mexico, and Romania.
Chengdao Oil Field
Chengdao Oil Field (埕岛) is an offshore oil field in the extra-shallow waters of southern Bohai Bay, Shandong, China, operated by Sinopec's Shengli Oilfield and discovered in 1988.
Chepaizi Oil Field
The Chepaizi Oil Field (车排子油田) is an oil field in Xinjiang, China, at the southern end of the Junggar Basin's northwestern margin, producing since 2005.
Cheshmeh-Khosh Oil Field
Cheshmeh-Khosh Oil Field, also written Cheshmeh Khosh, is an Iranian oil field in southwestern Iran whose reservoir is the Asmari formation, operated by ICOFC under NIOC.
Chevron Corporation
Chevron Corporation, also known as ChevronTexaco and Standard Oil of California, is an American integrated energy company in Houston that produces oil and gas under the Chevron, Texaco, and Caltex brands.
Chichimene Oil and Gas Field
Chichimene is a heavy-oil field in Colombia's Llanos Orientales basin in Meta department, discovered in 1969 and operated by Ecopetrol as a testing ground for in-situ combustion.
Chicontepec Field
Chicontepec Field, also called the Chicontepec Paleochannel, is a giant onshore tight oil field in Veracruz and Puebla, Mexico, holding one of Mexico's largest volumes of oil in place yet recovering under one percent.
Chillingar Oil Field
Chillingar Oil Field (میدان نفتی چلینگر) is an onshore conventional oil field in the Dezful embayment of southwest Iran, discovered in 1974 and operated by the National Iranian Oil Company.
China National Oil and Gas Exploration and Development Co
China National Oil and Gas Exploration and Development Co (CNODC) is a Chinese state-owned company that holds China National Petroleum Corporation's stakes in overseas oil and gas joint ventures.
China National Petroleum Corporation (中国石油天然气集团有限公司)
China National Petroleum Corporation (中国石油天然气集团有限公司), abbreviated CNPC, is China's wholly state-owned oil and gas company and parent of PetroChina, with assets in 33 countries and 6th place in the Fortune Global 500 in 2024.
China Sonangol International Holding Ltd
China Sonangol International Holding Ltd is a Hong Kong-incorporated joint venture, formed in 2004 between Beiya International Development and Angola's state oil company Sonangol, and core company of the 88 Queensway Group.
China ZhenHua Oil Co
China ZhenHua Oil Co, commonly shortened to ZhenHua Oil, is a Chinese state-owned oil company established in 2003 under the defense conglomerate NORINCO and headquartered in Beijing.
Chinarevskoye Oil and Gas Field
The Chinarevskoye field (Чинаревское) is an onshore oil and gas condensate field in north-western Kazakhstan, discovered in 1991 and operated since 1997 by Zhaikmunai LLP.
Chirag Oil and Gas Field
Chirag (Azerbaijani: Çıraq, meaning lantern) is an offshore oil and gas field about 100 km east of Baku, and part of the ACG block, where first oil was produced in November 1997.
Chord Energy Corp
Chord Energy Corp is an American oil and gas company formed in 2022 from the merger of Oasis Petroleum and Whiting Petroleum, operating in the Williston Basin.
Christina Lake oil sands project
The Christina Lake oil sands project is a Cenovus Energy steam-assisted gravity drainage (SAGD) bitumen operation in the Athabasca oil sands region of Alberta, south of Fort McMurray.
Chuc Oil and Gas Field
The Chuc Oil and Gas Field is an offshore light crude and natural gas field in the Bay of Campeche off Tabasco and Campeche, Mexico, discovered in 1982.
Chunfeng Oil Field
Chunfeng Oil Field (春风油田, "Spring Wind") is a shallow heavy-oil field on the Chepaizi Uplift in the Junggar Basin, Xinjiang, China, discovered in 2010 and operated by Sinopec's Shengli Oilfield.
Chunguang Oil and Gas Field
Chunguang Oil and Gas Field (春光) is an onshore oil field in the Junggar Basin, Xinjiang, China, discovered in 2005 and operated by Sinopec Henan Oilfield.
Chutyrsko-Kiyengopskoye Oil and Gas Field
Chutyrsko-Kiyengopskoye is an oil and gas field in central Udmurtia, Russia, 50 to 60 km north of Izhevsk, discovered in 1962, the republic's largest, operated by Udmurtneft and producing since 1970.
Citgo
Citgo, formally Citgo Petroleum Corporation, is an American oil refiner headquartered in Houston, Texas, founded as Cities Service in 1910 and owned by Venezuela's PDVSA since 1990.
Clair oil field
The Clair oil field is the largest oil field on the UK Continental Shelf, west of Shetland in the North Sea. Discovered in 1977, it is operated by BP.
Claymore oil field
Claymore is an oil field in the UK sector of the North Sea, discovered in 1974 and producing oil since November 1979 through a fixed steel platform.
CO2 injection
CO2 injection places carbon dioxide into subsurface reservoirs, used for enhanced oil recovery and for geologic carbon storage; the first commercial flood began at SACROC, Texas, in 1972.
Cobalt molybdate catalyst
A cobalt molybdate catalyst, usually called a CoMo catalyst, is an alumina-supported catalyst used with hydrogen in refineries to remove sulfur from gasoline, diesel, and jet fuel feedstocks.