National Iranian Oil Company-Exploration Directorate
(NIOC-EXP)
National Iranian South Oil Company
(NISOC)
Iranian Central Oil Fields Company
(ICOFC)
Iranian Offshore Oil Company
(IOOC)
National Iranian Oil Company-Exploration Directorate
(NIOC-EXP)
National Iranian South Oil Company
(NISOC)
Iranian Central Oil Fields Company
(ICOFC)
Iranian Offshore Oil Company
(IOOC)