 Jiang was made Deputy Director of the Shengli Petroleum Administration Bureau in March 1993, Senior Executive of the Qinghai Petroleum Administration Bureau in June 1994, and Director of the Qinghai Petroleum Administration Bureau in November 1994.In February 1999 he was made Assistant to the General Manager and the team leader in charge of the preparation for the initial public offering of China National Petroleum Corporation (CNPC).In November of that year he was promoted again, to Director and Vice President of PetroChina, a subsidiary of CNPC.