The existence of lots of advantages in Iran geopolitically, abundant reservoirs, necessary infrastructures being ready and the codification of the required laws and regulations in accordance with the development plans have provided the adequate conditions for the investment and participation of the international companies in the Iran's gas industry and among them is the necessary preparation for the participation and investment in the natural gas production, transmission and underground storage sectors and also the sale and export of gas through the pipelines or as LNG and other commodities.