Marun Field

Marun Field is an oil field in the Khuzestan province of Iran and is the second-largest oil field in Iran. The field was discovered in 1963, and owned by state-owned National Iranian Oil Company (NIOC) and operated by National Iranian South Oil Company (NISOC).[1]

Marun
Location of the Marun oil field within Iran
Country	Iran
Region	Asia
Offshore/onshore	Onshore
Coordinates	30°51′13″N 49°50′19″E
Operators	NISOC
Partners	NIOC
Field history
Discovery	1963
Start of production	1966
Production
Current production of oil	520,000 barrels per day (~2.6×10^7 t/a)
Estimated oil in place	46,700 million barrels (~6.37×10^9 t)
Recoverable oil	21,900 million barrels (~2.99×10^9 t)
Estimated gas in place	462,100×10^9 cu ft (13,090×10^9 m3)
Producing formations	Miocene Cretaceous Jurassic

The Marun field contains estimated recoverable oil reserves of 22 billion barrels making it the world's sixth biggest onshore oil field in the world.[2] Marun is currently producing approximately 520,000 barrels per day (83,000 m³/d) of crude oil per day. It is the second biggest producing oil field in Iran, after Ahvaz Field.[3]

The super-giant Marun field, has long been one of the most prolific oil fields in Iran. It reached a peak of 1.34 million b/d in 1976, and although it has since declined, it remains in the top three producing fields alongside Ahvaz Field and Gachsaran Field.[4] The smaller Kupal oil field and Shadegan oil field, located north and south of Marun. The Marun field was brought on stream in 1966 and its production gradually raised to more than one million barrels of oil a day in 1972.[5] It consists of two oil reservoirs and one gas reservoir named Asmari, Bangestan, and Khami, respectively.