Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China
Figure 8
(a) Relationship between δ13C-C2H6–δ13C-C3H8 and gas wetness (the trending line for primary cracking and secondary cracking was modified from [44]); (b) relationship between iC4/nC4 and gas wetness (modified from [44]).
