The Main Control Factors for Shale Gas Accumulation and Exploration Problems in Shale Gas of South China

The shale gas exploration in China has achieved remarkable profits, and four national shale gas demonstration zones （Fuling Jiaoshiba, Changning - Weiyuan, Zhaotong, and Yanchang） have been established. Recently, nearly 400 drilling wells have been accomplished, including 143 vertical wells and 130 horizontal wells. But the shale gas production varies widely, as the main control factors of enrichment conditions and accumulation mechanism of shale gas is still not enough studied, which fundamentally restricts the shale gas exploration and development process.