Identification of low-overpressure interval and its implication to hydrocarbon migration: Case study in the Yanan sag of the Qiongdongnan Basin, South China Sea - Fig 4

(A) Normal compaction trend constructed based on the P-velocity data from wells characterized by the normal pressure (blue line) and the interval velocities calculated from the stacking velocities (red line). (B) Relationship between the velocity deviating normal compaction trend and measured pressure coefficient of wells in the Qiongdongnan Basin.