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Cabinda Oil and Gas Field
The Cabinda oil and gas field is a group of producing offshore fields in shallow waters off Cabinda province, Angola, operated by Chevron in concession Block 0 since first oil in 1968.
Cactus Lake Basman-Bakken Oil Pool
The Cactus Lake Basman-Bakken Oil Pool is a heavy-oil pool in west-central Saskatchewan, Canada, discovered in 1974, producing commingled oil from the Bakken Formation and overlying Mannville sands.
Cainan Oil Field
Cainan Oil Field (彩南油田) is an onshore oil and gas field in the eastern Junggar Basin, Xinjiang, China, discovered in the early 1990s and operated by PetroChina's Xinjiang Oilfield Company.
Cairn Oil & Gas
Cairn Oil & Gas is the oil and gas exploration and production division of Vedanta Limited and India's largest private sector producer of crude oil.
California oil and gas industry
The California oil and gas industry extracts and refines crude oil and natural gas in California, producing about 245,000 barrels of crude per day in early 2026.
California Resources Corporation
California Resources Corporation is an oil and gas producer headquartered in Long Beach, spun off from Occidental Petroleum in 2014 and traded on the NYSE as CRC.
Callon Petroleum
Callon Petroleum was an American independent oil and gas exploration and production company founded in 1950 in Natchez, Mississippi, and acquired by APA Corporation in 2024 for about $4.5 billion.
Caltex
Caltex is a petroleum brand created in 1936 as California Texas Oil Co., a joint venture of Standard Oil of California and Texaco, owned today by Chevron and used across Asia, the Middle East, and Africa.
Caltex Australia
Caltex Australia was the Australian petroleum refining and marketing company formed by the 1995 Ampol–Caltex merger and renamed Ampol Limited in May 2020 after Chevron terminated the Caltex brand license.
Caño Limón Oil and Gas Field
Caño Limón is a giant oil field in Arauca, Colombia, about six miles south of the Venezuelan border, discovered by Occidental Petroleum in July 1983.
Caño Sur Este Oil Field
Caño Sur Este Oil Field, also known as Fauno, is an operating onshore oil field in Puerto Gaitán, Meta, Colombia, operated by Ecopetrol, which discovered it in 2011.
Cantarell Field
Cantarell Field is an offshore oil field complex in Mexico's Bay of Campeche, operated by Pemex, which peaked in 2004 as the world's second-largest producing field.
Caofeidian 11-1/11-2 Oil Field
Caofeidian 11-1/11-2 (曹妃甸11-1/11-2) is a pair of connected offshore oil fields in western Bohai Bay, China, discovered in 1999 and 2001 and producing since July 2004 from Block 04/36.
Caofeidian 6-4 Oil Field
Caofeidian 6-4 (曹妃甸6-4油田) is an offshore oil field in the west-central Bohai Sea, China, developed and operated by CNOOC Limited, producing light crude since March 2021.
Captain Oil and Gas Field
Captain is a billion-barrel heavy-oil field in UK North Sea Block 13/22a, about 90 miles northeast of Aberdeen, producing since 1997 and operated by Ithaca Energy.
Carapeba Oil Field
Carapeba is an offshore oil field in the Campos Basin, Brazil, off Rio de Janeiro, discovered in 1982 with an estimated 184 million barrels of recoverable oil.
Caratinga Oil and Gas Field
Caratinga (Campo de Caratinga) is a deepwater oil and gas field in the south-central Campos Basin, offshore Rio de Janeiro, Brazil, discovered in 1994 and operated by Petrobras.
Carmópolis Oil and Gas Field
Carmópolis is an onshore oil and gas field in the Sergipe-Alagoas Basin in Sergipe, Brazil, discovered by Petrobras in 1963 and sold to Carmo Energy in 2022 for $1.1 billion.
Cartagena refinery
The Cartagena refinery is Repsol's largest industrial complex in Spain, a petroleum refining and petrochemical site in the Escombreras valley near Cartagena, Murcia, operating since 1950.
Casabe Oil and Gas Field
Casabe is a mature crude oil field in Yondó, Antioquia, Colombia, discovered by Shell in 1941, once among Colombia's most productive fields, and operated by Ecopetrol since 1975.
Casing cementing
Casing cementing is the process of pumping cement slurry down a well's steel casing and up the annulus, bonding the casing to the formation and sealing fluid zones.
Casing while drilling
Casing while drilling, also called casing drilling, is a well-construction technique in which the steel casing serves as the drillstring, drilling and casing the well in one operation.
Casper refinery
The Casper refinery is an oil refinery in Casper, Wyoming, owned and operated by HF Sinclair, with a crude capacity of 30,000 barrels per day.
Castilla Oil Field
Castilla Oil Field (Campo Castilla) is a giant heavy-oil field in the Llanos Basin of eastern Colombia, discovered in 1969 and Ecopetrol's main producing field at close to 100 thousand barrels per day.
Castleton Commodities
Castleton Commodities International is a privately held American energy merchant based in Stamford, Connecticut, founded in 1997 and known for buying Morgan Stanley's physical oil business in 2015.
Castrol
Castrol is a British lubricants brand founded in 1899 by Charles Wakefield, named for the castor oil in its early motor oils, and owned by bp since 2000.
Catalytic cracking
Catalytic cracking is a petroleum refining process that uses acid catalysts to break large hydrocarbon molecules into gasoline, light fuel oil, and petrochemical feedstocks like propylene.
Catcher Oil and Gas Field
Catcher is a producing oil field in the UK Central North Sea about 170 km southeast of Aberdeen, developed with the Varadero and Burgman fields through the BW Catcher FPSO.
Cathedral Energy Services
Cathedral Energy Services was a Calgary, Alberta oilfield services company providing directional drilling and MWD services in Canada and the United States, renamed ACT Energy Technologies in July 2024.
Cerro Dragon Oil and Gas Field
Cerro Dragón (Spanish for Dragon Hill) is Argentina's largest conventional oil and gas field, in the Golfo San Jorge basin of Patagonia, operated by Pan American Energy since 1997.