[中國石油天然氣股份有限公司 PETROCHINA COMPANY LIMITED (a joint stock limited company incorporated in the People’s Republic of China with limited liability) (Stock Code: 857) Connected Transaction Formation of a Joint Venture Company Since the applicable percentage ratio for the formation of the Joint Venture Company is more than 0.1% but less than 5%, the formation of the Joint Venture Company is only] [99.1 Announcement dated January 4, 2012 relating to formation of a joint venture by and between the Company and CNPC. PetroChina Company Limited Dated: January 4, 2012]