“…The tectonic activity of the basin is strong. Following the Caledonian, Hercynian, Indosinian, Yanshan, and Himalayan tectonic movements, a fault‐fold tectonic pattern was gradually formed and has persisted until the present‐day (Nie et al, 2023; Tong, 2000). The basement of the basin comprises middle‐upper Proterozoic magmatic and metamorphic rocks with a thickness of 1000–10,000 m. The basin can be divided into four oil‐gas accumulation areas according to their morphological characteristics: east Sichuan, south Sichuan, west Sichuan, and central Sichuan (Figure 1) (Wang et al, 2020; Wu et al, 2013; Zhang et al, 2015).…”