Homayoon Kazemeini said drilling of 18 wells at the field have finished and installation of completion string of 15 rigs have also been finished.
National Iranian Drilling Company (NIDC), Puya Energy Kish, Naft Kar and Khatam al-Anbia Construction Headquarters are in charge of drilling.
Yaran oilfield, divided into South and North, is estimated to contain 2 billion barrels of in-situ crude oil in its reserves.
Iraq is already recovering 200,000 b/d from South Yaran field which the two neighbors share.
The field is being developed in Iran for production of 50,000 to 60,000 b/d of crude oil, 60 mcm of natural gas and drilling of 30 wells.
Hazemeini, however, said production target of the field has been halved by Iran based on the latest studies.
He also said early production from the field was start during the current Iranian calendar year which began on March 20.
Iran started production of crude oil from Yadavaran, North Azadegan and North Yaran oilfields in November.