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Natural gas reserves in Iran

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Title: Natural gas reserves in Iran  
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Subject: Iran, Energy in Iran, South Pars / North Dome Gas-Condensate field, Iranian Offshore Engineering and Construction Company, Iran LNG
Collection: Natural Gas Fields in Iran
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Natural gas reserves in Iran

Proved natural gas reserves in Iran (data from OPEC)
Iran Gas Fields Location Map
Iran's oil & gas production (1970-2030)

According to the Iran Petroleum Ministry, the proved natural gas reserves of Iran are about 1,046 trillion cubic feet (29.6 trillion cubic metres) or about 15.8% of world's total reserves, of which 33% are as associated gas and 67% is in non associated gas fields. It has the world's second largest reserves after Russia.[1][2] As it takes approximately 5,850 cubic feet (166 m3) of gas to equal the energy content of 1-barrel (0.16 m3) of oil, Iran's gas reserves represent the equivalent of about 216 billion barrels (3.43×1010 m3) of oil.

The US Energy Information Administration estimated Iran's proved gas reserves as of the start of 2013 as 1,187 trillion cubic feet (33.6 trillion cubic metres).,[3] rendering it 1st the world, surpassing Russia's.

Iran is one of the most hydrocarbon-rich areas in the world. Since the nation's first oil well in 1908, 145 hydrocarbon fields and 297 oil and gas reservoirs have been discovered in Iran, with many fields having multiple pay zones. A total of 102 fields are oil and the remaining 43 are gas, and there are 205 oil reservoirs and 92 natural gas reservoirs. According to Iran Energy Balance Sheet (2009, in Persian), 78 of these fields are currently active, with 62 onshore and 16 offshore, leaving 67 fields inactive at present. Some 23 hydrocarbon fields lie in border areas and are shared between Iran and adjacent countries, including Kuwait, Iraq, Qatar, Bahrain, UAE, Saudi Arabia and Turkmenistan.[4]

The Permo-Triassic successions (the Dehram group in Iran and its lateral equivalent, the Khuff formation), are major gas-producing intervals in these basins. The supergiant North Dome/South Pars field alone is estimated to hold about 19% of the world’s total gas reserves, producing gas and condensate from these intervals.[5]

Iran still has huge potential for new significant gas discoveries: areas such as Caspian Sea, North East, Central Kavir and especially areas starting from Aghar and Dalan gas fields in Fars province up to the Strait of Hormuz and Central Persian Gulf have considerable potential for undiscovered gas.[6] According to Exploration Directorate of NIOC, there are about 150 unexplored anticlines in Iran.[7]

In 1998, the US Geological Survey estimated Iran's undiscovered gas resources to be in the range of 226 to 820 trillion cubic feet, with a probability-weighted average of 465 trillion cubic feet (13.2 trillion cubic metres)[8]

In January 2008, Iranian Minister of Petroleum Gholam-Hossein Nozari said, "NIOC has a target of producing one billion cubic meters of gas per day.[9]

Composition of Iranian Natural Gas Reserves[10]
Onshore Associated 13.5%
Onshore Non-Associated 18.4%
Offshore Associated 1%
Offshore Non-Associated 67.1%

Iran's ten biggest non-associated gas fields:

Iran’s ten biggest Non-Associated Gas Fields.[11]
Field Gas in place Recoverable reserve
South Pars 500×10^12 cu ft (14,000 km3) 360×10^12 cu ft (10,000 km3)
Kish[12] 66×10^12 cu ft (1,900 km3) 50×10^12 cu ft (1,400 km3)
North Pars[13] 60×10^12 cu ft (1,700 km3) 47×10^12 cu ft (1,300 km3)
Golshan[14] 55×10^12 cu ft (1,600 km3) 45×10^12 cu ft (1,300 km3) to 25×10^12 cu ft (710 km3)
Tabnak NA 21.2×10^12 cu ft (600 km3)
Kangan NA 20.1×10^12 cu ft (570 km3)
Khangiran NA 16.9×10^12 cu ft (480 km3)
Nar NA 13×10^12 cu ft (370 km3)
Aghar NA 11.6×10^12 cu ft (330 km3)
Farsi (B-Structure) NA 11×10^12 cu ft (310 km3) - 22×10^12 cu ft (620 km3)

There are also several discovered gas fields in Iran which hold low portion of CH4 and high portion of N2. These gas fields are Kabir Kuh, Milatun, Samand, Holeylan and Ahmadi. The Kabir Kuh gas field located in Lurestan province has 21 trillion cubic feet (590 billion cubic metres) of gas in place. The field gas consists of N2 64.33%, CH4 33.64%, CO2 2% and He 0.03%.

NIOC Natural Gas Discoveries Since 1995.[15]
Field's Name Gas in Place Recoverable Gas Reserve
Trillion cubic feet Billion cubic meters Trillion cubic feet Billion cubic meters
Kish [12] 66 1,900 50 1,400
Sardar-e Jangal [16] 50 1,400 NA
Tabnak 30 850 NA
Forouz [17] 24.7 700 NA
Madar 17.5 500 NA
Farsi (B-Structure)[18] 11-23 310-650 NA
Halegan[19] 12.4 350 9 250
Ghir (Sefid Zakhur)[20][21] 11.4 320 8.5 240
Yadavaran-Gas Layer 9.75 276 NA
Lavan 9.1 260 NA
Balal-Dahroum Formation 8.8 250 NA
Homa 7.6 220 NA
Sefid-Baghon [22][23] 6.3 180 4.45 126
Marun Gas Layer 6.2 180 NA
Gardan 5.7 160 NA
Day 4.4 120 NA
Binak Gas Layer 3.5 99 NA
Karanj Gas Layer 2.9 82 NA
BiBi hakime Gas Layer 2.4 68 NA
Tous[24] 2.19 62 1.6 45
Zireh 1 28 NA
Kuh-e-Asmari(Masjed Soleiman)[25] 1 28 0.739 20.9
Arash 0.79 22 NA
Kheyr Abad 0.17 4.8 NA
Total 277.3 7,850 NA

Iran's proven oil and gas reserves are 137 billion barrels (2.18×1010 m3) (10% of world's total) and 41.14 trillion cubic meters (15% of world's total) respectively, which give it a unique status in the global energy supply. Iran also owns 50% of the offshore gas field of Rhum in the North Sea, which is Britain's largest untapped gas field. Natural gas production in Iran will reach 900 million cubic meter/day by 2015.[26]


  • Development 1
  • See also 2
  • References 3
  • External links 4


Iranian marketed natural gas production and consumption (2000-2010)

At present, Iran is producing only a small share of its gas reserves, about 5.5 trillion cubic feet (160 billion cubic metres) per year. This means that Iran is one of the few countries capable of supplying much larger amounts of natural gas in the future. Iran's overall gas exports in 2009/10 reached a record high of 6.8 billion cubic meters, increasing 44% over the previous year.[27]

Iran’s net export of gas in 2010 was 1.57 billion cubic metres. In 2010, Iran’s exports and imports of natural gas were 8.42 and 6.85 billion cubic metres respectively. In 2010, Iran exported 0.4, 0.25, and 7.77 billion cubic metres of gas to Armenia, Azerbaijan and Turkey respectively. In terms of imports, Iran has received 0.35 and 6.5 billion cubic metres from Azerbaijan and Turkmenistan respectively.[28] Iran has approximately 29.6 trillion cubic meters of proven gas reserves which accounts for 16% of the world’s total reserves. This places Iran behind Russia with the second largest gas reserves worldwide. In 2009, Iran’s natural gas production stood at 116 billion cubic metres. In 2010, this number rose to 138.5 billion cubic metres which shows a 19% increase. Most of Iran’s gas is consumed domestically and has been increasing at an average annual rate of 12% for the past 15 years.

Iran plans to invest $15 billion a year to expand its annual gas output capacity to 300 billion cubic metres (11 trillion cubic feet) by 2014, from 170 billion in 2009.[29] It will invest $50 billion from 2010 until 2020 on LNG projects. Iran plans to export 8 million tons of LNG by 2012. The country also aims to increase natural gas exports by fivefold to 60 billion cubic metres (2.1 trillion cubic feet) a year by 2014.[29] Global gas demand is projected to rise between 2 percent and 3 percent a year for the next 20 to 25 years, with India and China the main markets for Iran’s gas exports.[30]

A recent report (December 11, 2011) from Iran's Petroleum Minister indicates that a large natural gas reserve was discovered inside Iran's side of the Caspian Sea. These reserves are estimated at 50 trillion cubic feet (1.42 trillion cubic meter).[31]

See also


  1. ^ Iran Oil Ministry Annual Bulletin, 5th Edition, pages 190-193 (available in persian)(كتاب نفت و توسعه).[1]
  2. ^
  3. ^ US Energy Information Administration, Proved natural gas reserves, accessed 3 Sept. 2013.
  4. ^ Persia Land of Black Gold, Retrieved 2012-4-14.
  5. ^ Iranian Discoveries Continue, Retrieved 2012-4-14.
  6. ^ Undiscovered Oil and Gas Resources of Lower Silurian Qusaiba-Paleozoic Total Petroleum Systems [2]
  7. ^ 17 Apr 2008
  8. ^ US Geological Survey, World Conventional Gas Resources, by Basin.
  9. ^ The Weekly Publication of the Iranian Petroleum Industry, Jan 13 , 2008 [3]
  10. ^
  11. ^ Iran Oil Ministry Annual Bulletin, 5th Edition, pages 190-193 (available in persian)(كتاب نفت و توسعه).[4] and Iran Energy Balance Sheet (ترازنامه انرژی ایران ) (available in Persian) Published by; Iran’s Energy Ministry, Secretariat of Energy and Electricity,2000 [5]
  12. ^ a b NIOC Official News Agency,(
  13. ^ POGC website
  14. ^ POGC website
  15. ^ Iran Oil Ministry Annual Bulletin, 5th Edition, pages 190-193 (available in persian)(كتاب نفت و توسعه).[6] and Iran Energy Balance Sheet (ترازنامه انرژی ایران ) (available in Persian), Page 175, Published by; Iran’s Energy Ministry, Secretariat of Energy and Electricity,2006 [7]
  16. ^
  17. ^ NIOC Official News Agency,(
  18. ^ IHS International Oil Letter, Vol 24 issue 6, published 15 February 2008 [8]
  19. ^
  20. ^ NIOC Official News Agency,(,6/2/2009
  21. ^ NIOC Official News Agency,(,September 30, 2007
  22. ^ NIOC Official News Agency,(,9/5/2009
  23. ^ NIOC Official News Agency,(,25/4/2009
  24. ^ NIOC Official News Agency,(, 2010 June 20
  25. ^ NIOC Official News Agency,(, 2008 April 17
  26. ^ PressTV: Iran to up gas production capacity Retrieved January 6, 2011
  27. ^
  28. ^
  29. ^ a b
  30. ^
  31. ^

External links

  • Methodology in estimating the size of oil and gas fields
  • Iran Oil & Gas Directory -
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