Characteristics and Origin of Methane Adsorption Capacity of Marine, Transitional, and Lacustrine Shales in Sichuan Basin, China

Figure 1

Stratum characteristics and sampling locations in the Sichuan Basin. Shales are primarily developed in the Cambrian Qiongzhusi Formation, the Ordovician Wufeng Formation, the Silurian Longmaxi Formation, the Permian Longtan Formation, the Triassic Xujiahe Formation, and the Jurassic Ziliujing Formation. A total of 10 wells and 152 samples were selected for analysis.