SHANA (Assaluyeh) – The major annual overhaul operations of 13 South Pars Gas Complex (SPGC) refineries in Bushehr Province, southern Iran, begin on May 14, 2023. SPGC Managing Director Ahmad Bahoush says over 7 billion cubic meters of gas will be added to the country’s production following the overhaul and new measures by the end of current Iranian calendar year (March 19, 2024).