National Iranian Oil Company
The National Iranian Oil Company is located in Tehran, Iran
The NIOC is one the largest oil companies in the world. Currently, the company estimates 137 billion barrels of liquid hydrocarbons and 29 trillion cubic meters of natural gas under company holding. NIOC consists of seventeen production companies, eight technical service companies, seven managements, six divisions (administrative units) and five organizational units. This accounts for roughly a 10% global share of oil reserves, and an 18% global share of natural gas reserves.