1,466 articles
Hibernia Oil and Gas Field
Hibernia is an offshore oil field in the Jeanne d'Arc Basin on the Grand Banks of Newfoundland, discovered in 1979 and producing since November 1997 from a gravity base platform.
Hilcorp Energy
Hilcorp Energy is a privately held American oil and natural gas producer headquartered in Houston, Texas, founded in 1989, known for acquiring and optimizing large, mature oil and gas properties.
Hilong Group
Hilong Group (海隆石油工业集团), listed on the Hong Kong Stock Exchange as 01623.HK, is a Shanghai-based Chinese group manufacturing drill pipe and providing drilling, coating, and offshore engineering services.
Hindustan Petroleum
Hindustan Petroleum Corporation Limited (HPCL) is an Indian state-controlled oil and gas company headquartered in Mumbai that refines crude oil and markets petroleum products across India.
History of the petroleum industry
The history of the petroleum industry spans ancient use of surface oil seepages to the modern industry begun with the first commercial well in Pennsylvania in 1859.
History of the petroleum industry in the United States
The history of the petroleum industry in the United States began with Edwin Drake's 1859 well at Titusville, Pennsylvania, and includes the Standard Oil monopoly.
HKN Energy Ltd
HKN Energy Ltd is a private oil and gas exploration and production company, incorporated in the Cayman Islands, that operates the Sarsang and Atrush blocks in Iraqi Kurdistan.
HMH (drilling equipment company)
HMH is a Houston-based manufacturer of drilling equipment such as top drives and pressure control systems, formed in 2021 by merging Baker Hughes' drilling business with MHWirth.
Hod Oil and Gas Field
Hod is an oil and gas field in the southern Norwegian North Sea, 13 km south of Valhall, discovered in 1974 and producing from chalk reservoirs.
Hohenruppersdorf Oil and Gas Field
Hohenruppersdorf Oil and Gas Field is an oil field in the Vienna Basin, Lower Austria, operated by OMV and producing since around 1939 to 1941.
Hokchi Oil and Gas Field
Hokchi is a shallow-water oil and gas field in the Gulf of Mexico off Tabasco, Mexico, discovered by Pemex in 2009 and producing since 2020.
Homol Oil and Gas Field
Homol Oil and Gas Field is an offshore oil and gas field in the Gulf of Mexico off southeastern Mexico, operated by Pemex and discovered in 2002.
Hongde Oil Field
The Hongde Oil Field is a tight sandstone oil field in Huanxian County, Gansu, China, announced by PetroChina in December 2023 with reserves over 100 million tons.
Honghua Group
Honghua Group, also known as Dongfang Honghua, is a Chinese drilling rig manufacturer based in Chengdu, listed in Hong Kong since 2008 and majority-owned by Dongfang Electric.
Horizon Oil (company)
Horizon Oil is an Australian oil and gas exploration and production company headquartered in Sydney, producing about 7,300 barrels of oil equivalent per day across five countries.
Horizon Oil Sands
Horizon Oil Sands is an integrated oil sands mine and upgrading complex owned by Canadian Natural Resources, located about 70 km north of Fort McMurray, Alberta.
Horizontal drilling
Horizontal drilling is a technique that turns a wellbore sideways to run through an oil or gas formation, exposing far more reservoir rock than a vertical well.
Houston Refinery
The Houston Refinery was a 268,000-barrel-per-day full-conversion refinery on the Houston Ship Channel in Houston, Texas, built by Sinclair in 1918 and permanently shut down in 2025.
Huanjiang Oil Field
The Huanjiang Oil Field (环江) is an operating onshore oil field in Huanxian County, Gansu Province, China, in the western Ordos Basin, developed by PetroChina's Changqing Oilfield Company.
Huizhou 21-1 Oil and Gas Field
Huizhou 21-1 (惠州21-1) is an offshore oil and gas field in the South China Sea, first produced in 1990 as China's first million-tonne offshore oilfield.
Hujianshan Oil Field
Hujianshan Oil Field (胡尖山) is an onshore oil field in Dingbian County, Yulin, Shaanxi, China, in the Ordos Basin, discovered in 2001 and producing since 2006.
Humber Refinery
The Humber Refinery is an oil refinery operated by Phillips 66 at South Killingholme in North Lincolnshire, England, and the only coking refinery in the United Kingdom.
Hungo Oil Field
The Hungo Oil Field is a deepwater oil field in Block 15 off Angola, about 370 kilometers northwest of Luanda, producing since August 2004 through Kizomba A.
Husky Energy
Husky Energy was a Calgary, Alberta-based integrated oil and gas company producing crude oil, bitumen, and natural gas from 1938 until it merged with Cenovus Energy in 2021.
Husky Synthetic Blend
Husky Synthetic Blend (HSB) is a light, sweet synthetic crude oil produced at the Lloydminster Upgrader in Saskatchewan and marketed as refinery feedstock in Canada and the United States.
Hussar Oil and Gas Field
Hussar Oil and Gas Field is an operating onshore oil and gas field in Alberta, Canada, about 80 km east of Calgary, discovered in 1904.
Huwaila Oil and Gas Field
Huwaila Oil and Gas Field is an onshore oil field in Abu Dhabi, United Arab Emirates, discovered in 1965 and developed as a satellite of the Bu Hasa field.
Huyapari Oil and Gas Field
Huyapari is an extra-heavy oil field in the Ayacucho Block of Venezuela's Orinoco Heavy Oil Belt, operated by PDVSA Petropiar, a joint venture between PDVSA and Chevron.
Hydraulic stimulation
Hydraulic stimulation is a reservoir engineering method that injects fluid at high pressure to increase rock permeability, used for oil and gas recovery and enhanced geothermal systems.
Hydrodesulfurization
Hydrodesulfurization is a catalytic refining process that removes sulfur from petroleum fractions by reacting organosulfur compounds with hydrogen over sulfided molybdenum catalysts, letting refineries meet ultra-low-sulfur diesel limits.