“…The high acoustic time difference of mudstone may be due to the existence of micro‐cracks containing gas and water in the mudstone, which reduces the propagation ability of the acoustic wave (Li, Zhang, Yi, Shan, & Yin, 2014). The low resistivity value of the mudstone may be due to the formation of a large number of micro‐fractures in the mudstone (Hisham, Muztaza, & Jia, 2017). The high AC and low resistivity values of mudstone were detected at 5,965–5,990 m and 6,002–6,020 m, respectively, in Well Y6, suggesting that two sections of abnormal overpressure developed in the Jurassic–Cretaceous interval of Well Y6 (Figure 15).…”