NIOC's Oil Reserves
According to OPEC, NIOC recoverable liquid hydrocarbon reserves at the end of 2006 was 1,384 billion barrels (2.2×1011 m3).
NIOC oil reserves at the beginning of 2001 was reported to be about 99 billion barrels (1.57×1010 m3), however in 2002 the result of NIOC’s study showed huge reserves upgrade adding about 317 billion barrels (5.04×1010 m3) of recoverable reserves to the Iranian oil reserves.
After 2003 Iran has made some significant discoveries which lead to addition of another 7.7 billion barrels (1.22×109 m3) of oil to the recoverable reserves of Iran.
The vast majority of Iran's crude oil reserves are located in giant onshore fields in the south-western Khuzestan region near the Iraqi border. Overall, Iran has 40 producing fields – 27 onshore and 13 offshore. Iran's crude oil is generally medium in sulfur and in the 28°-35 °API range.
As at 2012, 98 rigs are in operation in onshore fields, 24 in offshore fields and a single rig is in operation in the Caspian Sea. Iran plans to increase the number of its drilling rigs operating in its onshore and offshore oilfields by 36 units to reach 134 units by March 2014.
Table 1- The five biggest NIOC oil fields;
| Rank | Field Name | Formation | Initial Oil in Place |
Initial Recoverable Reserves |
Production |
|---|---|---|---|---|---|
| 1 | Ahwaz | Asmari & Bangestan | 65.5 | 25.5 | 945 |
| 2 | Marun | Asmari | 46.7 | 21.9 | 520 |
| 3 | Aghajari | Asmari & Bangestan | 30.2 | 17.4 | 200 |
| 4 | Gachsaran | Asmari & Bangestan | 52.9 | 16.2 | 560 |
| 5 | Karanj | Asmari & Bangestan | 11.2 | 5,7 | 200 |
| Field's Name | Thousand barrels per day |
Thousand cubic meters per day |
|---|---|---|
| Ahwaz (Asmari Formation) | 700 | 110 |
| Gachsaran | 560 | 89 |
| Marun | 520 | 83 |
| Bangestan | 245 | 39.0 |
| AghaJari | 200 | 32 |
| Karanj-Parsi | 200 | 32 |
| Rag-e-Safid | 180 | 29 |
| BibiHakimeh | 130 | 21 |
| Darquin | 100 | 16 |
| Pazanan | 70 | 11 |
| Dorood | 130 | 21 |
| Salman | 130 | 21 |
| Abuzar | 125 | 19.9 |
| Sirri A&E | 95 | 15.1 |
| Soroush/Nowruz | 60 | 9.5 |
Read more about this topic: National Iranian Oil Company
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