Natural gas is a gaseous combustible substance which mainly consists of hydrocarbon, normally methane. It is an important raw material to make ammonia, ethylene etc. It has high heat and can burn completely, so it is an environment friendly clean fuel. By the end of 2007, Sinopec Corp. has proved gas reserve 6330.8 bcf and yearly output 282.6 bcf.

Most gas fields of Sinopec Corp. are located in the northeast region of Sichuan. With the development of Gas-to-East China project, the company and local economy will be benefited from it.
 
This project starts from Dazhou City in Sichuan Province in the west, runs across 6 provinces and 2 municipalities, before ending on Shanghai. Its trunk line has a total length of 1,700 km, and constitutes a primary component part of China's backbone natural gas pipeline network. The Puguang Gas Field, being a major gas field under this project, has its economic reserves known as 356.1 billion cubic meters, and is the largest-scale integral gas field in the southern marine facies domain of the day, while boasting a rosy future of resources development. The gas from this project will mainly supply Sichuan, Jiangsu, Zhejiang, Anhui and Jiangxi.