Relationships of the iC4/nC4 and iC5/nC5 ratios with maturity of coal-derived gases of Triassic Xujiahe Formation in central Sichuan Basin, SW China |
QIN Shengfei,HUANG Chunhu,ZHANG Benjian,YANG Yu,YUAN Miao |
Fig. 1. Distribution of the Xujiahe Formation gas fields and petroleum system in the Central Sichuan Basin. |