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Iranian Central Oil Fields Company

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An operating company of the National Iranian Oil Company responsible for developing and producing onshore oil and natural gas fields across central and western Iran.

Last updated August 25, 2026

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Overview

The Iranian Central Oil Fields Company, commonly abbreviated as ICOFC, is one of the five principal production companies within the National Iranian Oil Company, Iran’s state petroleum enterprise. Established in 1999, it was created to organize the development and operation of onshore oil and natural-gas resources outside the principal operating territories managed by other major NIOC production companies. Its remit covers exploration-related development, field production, processing and the transmission of hydrocarbons produced from a geographically dispersed portfolio of inland reservoirs. ICOFC’s resource base has been described as comprising 76 reservoirs, including 45 gas fields and 31 oilfields. The company’s operating model is based on using available technical knowledge and production technology to bring onshore fields into operation and sustain output from mature assets. The company’s fields extend across numerous Iranian provinces, giving it an important role in connecting regional field operations with refineries, power plants, petrochemical facilities and local residential and industrial gas systems. The company’s operating structure includes regional production organizations. Southern Zagros Oil & Gas Production Company, based in Shiraz, manages operations in Fars, Bushehr, Hormozgan, Kohgiluyeh and Boyer-Ahmad, and Chaharmahal and Bakhtiari. Its producing regions include Nar-Kangan, Aghar-Dalan, Parsian and Qeshm-Sarkhun. The fields associated with this regional system include Aghar, Dalan, Nar, Kangan, Tabnak, Gavarzin, Sarkhun, Homa, Varavi and Shanol. Production from these assets is supplied to facilities including the Farashband, Fajr, Sarkhun and Parsian refineries. West Oil & Gas Production Company, established in 2000 and based in Kermanshah, covers parts of Ilam, Kermanshah, Lorestan, Qom and northern Khuzestan. Its named operating regions include Cheshmeh Khosh, Dehloran, Sarkan, Naftshahr and Tang-e-Bijar. East Oil & Gas Production Company, established in 2001 and based in Mashhad, focuses on gas and condensate production from the Khangiran and Gonbadli fields in Razavi Khorasan. Its output supports the Hashemi-Nejad refinery as well as residential, industrial, petrochemical and power-sector consumers across several northeastern and northern provinces. A reference account identified ICOFC as Iran’s largest natural-gas producer in 2015. That description reflects the company’s broad gas-field portfolio and its role in supplying regional energy infrastructure rather than a consumer-facing brand identity. Publicly available reference material also described a long-term plan under which the company could reach 89 fields across 19 provinces. Production totals and field status vary by year and operating unit; therefore, the company is best understood as a national upstream and gas-production platform whose importance lies in field management, regional supply and integration with Iran’s state petroleum system.

History

The Iranian Central Oil Fields Company was established in 1999 as one of the major production companies of the National Iranian Oil Company. Its formation reflected an effort to organize the management of Iran’s inland oil and natural-gas resources through dedicated operating companies. ICOFC was assigned responsibility for developing and producing hydrocarbons from onshore fields, using available engineering expertise and production technology. The company’s portfolio spans multiple provinces and includes both oil and gas reservoirs. Reference material describes 76 reservoirs under its remit: 45 gas fields and 31 oilfields. Not all fields were producing at the same time. The cited account identified 14 gas fields and 13 oilfields as operational at the time of description, while a longer-term outlook envisioned expansion to 89 fields distributed across 19 provinces. These figures describe a changing development program rather than a fixed inventory, since Iranian field portfolios and operating assignments can be revised as projects progress. ICOFC developed a regional operating structure to manage geographically separate production areas. Southern Zagros Oil & Gas Production Company was established to handle production in five southern provinces. Its assets include gas-producing areas such as Aghar-Dalan, Nar-Kangan, Parsian and Qeshm-Sarkhun, with associated output directed to regional processing and refining facilities. The unit’s production system includes the Aghar, Dalan, Nar, Kangan, Tabnak, Gavarzin, Sarkhun, Homa, Varavi and Shanol fields. West Oil & Gas Production Company was established in 2000 in Kermanshah. It operates in a central and western area that includes Ilam, Kermanshah, Lorestan, Qom and parts of Khuzestan. Its operating regions include Cheshmeh Khosh, Dehloran, Sarkan, Naftshahr and Tang-e-Bijar. The unit produces oil, gas and condensate from onshore assets and has been associated with efforts to increase production through operational and engineering measures. East Oil & Gas Production Company was established in 2001 in Mashhad. Its initial role was to produce, separate and transmit gas and condensate for the Hashemi-Nejad refinery. Its main field area is in Razavi Khorasan, particularly around Khangiran and Gonbadli near Sarakhs. The company’s gas supply supports households and industrial users in a number of northern and northeastern provinces, and it also supplies energy-related customers including a petrochemical complex and the Neka power plant. By 2015, ICOFC was described in the reference material as Iran’s largest natural-gas producer. Its significance therefore extends beyond individual oilfield operations: it is part of the domestic gas-supply chain linking inland reservoirs with refineries, power generation, petrochemical production and regional distribution networks. The available public material does not provide a reliable current executive roster, current production statement or confirmed corporate website, so those details remain unspecified here.

  • 2015

    Identified as Iran’s largest natural-gas producer

    [1]

    Reference material described ICOFC as the largest natural-gas producer in Iran at that time.

  • 2001

    East Oil & Gas Production Company established

    [1]

    The eastern regional production subsidiary began operations around the Khangiran and Gonbadli fields and the Hashemi-Nejad gas-supply system.

  • 2000

    West Oil & Gas Production Company established

    [1]

    The western regional production subsidiary was established in Kermanshah to manage oil and gas operations in parts of western and central Iran.

  • 1999

    Company established

    [1]

    ICOFC was created as one of the five major production companies of the National Iranian Oil Company, with responsibility for onshore oil and gas development and production.

Products and positioning

A state-owned upstream and regional production platform within the National Iranian Oil Company, focused on onshore oil and gas fields and the supply of hydrocarbons to Iran’s domestic energy infrastructure.

  • Upstream energy production

    Natural gas

    Natural gas is ICOFC’s most prominent output. The company manages production from a broad portfolio of onshore gas fields and supplies gas into refinery, domestic distribution, industrial, petrochemical and power-generation systems. Its regional units connect fields such as Aghar, Dalan, Kangan, Tabnak, Khangiran and Gonbadli with processing and transmission infrastructure.

  • Upstream energy production

    Crude oil

    ICOFC also produces crude oil from inland fields operated through its regional production companies. The western operating area includes fields such as Cheshmeh Khosh, Dehloran, Sarkan and Naftshahr, while additional southern oilfield development has been associated with fields including Sarvestan, Sa’adat Abad and Khesht.

  • Hydrocarbon liquids

    Gas condensate

    Gas condensate is produced alongside natural gas in several ICOFC operating regions. It is handled as part of integrated gas-field production and is delivered with gas output to regional processing and refining facilities.

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