Gachsaran oil field

The Gachsaran oil field is an Iranian oil field located in Kohgiluyeh and Boyer-Ahmad Province and is around Gachsaran city or Dogonbadan.^[1] It was discovered in 1928 and developed by Anglo-Persian Oil Company. It began production of crude oil in 1930. The total proven reserves of the Gachsaran field are around 52.9 billion barrels (9.394 billion tonnes), and production is centered on 560,000 barrels per day (89,000 m³/d).^[2] The field is owned by National Iranian Oil Company (NIOC) and operated by National Iranian South Oil Company (NISOC).^[3]

Gachsaran oil field
Location of the Gachsaran oil field within Iran
Country	Iran
Region	Kohgiluyeh and Boyer-Ahmad
Offshore/onshore	onshore
Coordinates	30°21′N 50°48′E
Operator	NISOC
Partners	NIOC
Field history
Discovery	1928
Start of production	1930
Peak year	1976
Production
Current production of oil	560,000 barrels per day (~2.8×10^7 t/a)
Estimated oil in place	52,900 million barrels (~7.22×10^9 t)
Recoverable oil	23,700 million barrels (~3.23×10^9 t)
Producing formations	Miocene Cretaceous

Production History

Gachsaran is a mature oil field that experienced its peak production in 1976. Production from the Gachsaran oil field is declining due to its mature status, with peak production occurring in 1976. Contributing factors include a lack of investment, sanctions, and the natural decline rate of mature fields.