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Raguba oil field
The Raguba oil field is an onshore oil field in Concession 20 of Libya's central Sirte Basin, producing since 1963 and operated by state-owned Sirte Oil Company.
Rajagopal S. Raghavan
Rajagopal S. Raghavan is a petroleum reservoir engineer known for well test analysis, who retired from Phillips Petroleum in 2002 and joined the National Academy of Engineering in 2004.
Ramadan oil field
The Ramadan oil field is an offshore oil field in the central Gulf of Suez, Egypt, discovered in 1974 with reserves of several hundred million barrels and operated by GUPCO.
Ramshir oil field
The Ramshir oil field is an onshore oil field in Khuzestan province, southwest Iran, southeast of Ahvaz, discovered in 1961 and producing from the Asmari Formation.
Raphia oil field
The Raphia oil field is an operating onshore oil field in Chad's Bongor Basin, operated and 90 percent owned by CNPC and 10 percent by Chad's state oil company.
Ras Fanar oil field
Ras Fanar is an offshore oil field in the Gulf of Suez, Egypt, about 3.5 km east of Ras Gharib, producing from the Nullipore carbonate reservoir since 1984.
Ras Tanura Refinery
The Ras Tanura Refinery is a 550,000-barrel-per-day crude oil refinery on Saudi Arabia's Persian Gulf coast, owned and operated by Saudi Aramco and the largest refinery in Saudi Arabia.
Ratawi oil field
The Ratawi oil field is a major oil field in Basra Governorate, southern Iraq, and since 2023 the centerpiece of TotalEnergies' $27 billion Gas Growth Integrated Project.
Rate transient analysis
Rate transient analysis (RTA) is a petroleum engineering method that uses production rates and flowing pressures to estimate permeability, fracture properties, and oil or gas in place without shutting in the well.
Ratqa and Lower Fars oil fields
Ratqa, also called South Ratqa, is a heavy oil field in northern Kuwait, where the Lower Fars reservoir holds up to 15 billion barrels of oil.
Ravva oil and gas field
The Ravva oil and gas field is a shallow offshore field in the Krishna Godavari Basin off Andhra Pradesh, India, discovered by ONGC in 1987.
Recovery factor
The recovery factor is the percentage of hydrocarbons originally in a reservoir that can be produced with current technology, ranging from 1% for tight reservoirs to 80%.
Redwater fractionation complex
The Redwater fractionation complex is a natural gas liquids fractionation and storage facility in Redwater, Alberta, owned by Pembina Pipeline and the largest in Canada.
Reformulated gasoline blendstock
Reformulated gasoline blendstock, or RBOB, is a low-volatility, low-octane petroleum blendstock shipped to fuel terminals, where ethanol is blended in to produce reformulated gasoline under the Clean Air Act.
Renqiu oil field
The Renqiu oil field is a giant buried-hill oil field in Hebei Province, China, discovered in 1975 in the Jizhong subbasin, the first Precambrian reservoir found in China.
Resalat oil field
Resalat is an offshore oil field in the Persian Gulf, about 90 kilometers south of Lavan Island, Iran, discovered in 1967 and operated by IOOC.
Reserve replacement ratio
The reserve replacement ratio (RRR) is an upstream oil and gas measure dividing net proved reserves added by production; above 100% means the reserve base grew.
Reservoir characterization
Reservoir characterization is the process of integrating geological, geophysical, petrophysical, and reservoir engineering data to describe petroleum reservoir properties, particularly at locations between wells, using well logs, cores, and seismic data.
Reservoir engineering
Reservoir engineering is the branch of petroleum engineering that applies engineering principles to oil and gas reservoirs, estimating reserves and predicting fluid flow and recovery.
Reshadat oil field
Reshadat is an offshore oil field in the Persian Gulf, about 100 km southwest of Iran's Lavan Island. It was known as Rostam before the 1979 revolution.
Residue hydroconversion
Residue hydroconversion is the catalytic upgrading of petroleum residua, the heavy bottoms of crude distillation, with hydrogen, converting heavy molecules into lighter fractions while removing sulfur, nitrogen, and metals.
Resistivity logging
Resistivity logging is a well-logging technique that measures the electrical resistivity of rock formations around a borehole, used with Archie's equation to estimate porosity and water saturation in petroleum exploration.
Rex NE oil field
Rex NE is a conventional onshore oil field in Arauca, Colombia, discovered in late 2017 and declared commercial in 2018, operated by SierraCol Energy near Caño Limón.
Rhourde El Baguel oil field
Rhourde El Baguel is a large onshore oil field in eastern Algeria, about 90 km southeast of Hassi Messaoud, once the country's second largest oil field after Hassi Messaoud.
Rhourde El Krouf oil field
Rhourde El Krouf (RKF) is an onshore oil field in the Berkine Basin of eastern Algeria, discovered in 1992 and producing light oil since 1996.
Ringhorne oil field
Ringhorne is an oil field in the Norwegian sector of the North Sea, in the southern Viking Graben, producing since 2003 from a platform and operated by Vår Energi.
Rodnikovoye field
Rodnikovoye field (Родниковое месторождение) is an oil field in the Surgut district of Khanty-Mansi Autonomous Okrug, Western Siberia, discovered in 1977, developed from 1986, and operated by Surgutneftegas.
Rogozhnikovskoye field
Rogozhnikovskoye field (Рогожниковское месторождение) is an oil field in the Khanty-Mansi Autonomous Okrug of Western Siberia, Russia, discovered in 1988, in production since 2005, and operated by Surgutneftegas.
Rolf oil field
Rolf is a small oil field in the Danish sector of the North Sea, discovered in 1981, producing from a chalk reservoir, and operated by TotalEnergies as a satellite to the Gorm field.
Romashkino field
The Romashkino field, also spelled Romashkinskoye, is a giant oil field in Tatarstan, Russia, discovered in 1948 and developed from 1952 as the centerpiece of the Volga-Ural oil province.