Overpressure origin and its effects on petroleum accumulation in the conglomerate oil province in Mahu Sag, Junggar Basin, NW China

LI Jun,TANG Yong,WU Tao,ZHAO Jingzhou,WU Heyuan,WU Weitao,BAI Yubin

Fig. 8. Loading curve-unloading curve features and overpressure origin identification under two-stage linear compaction model. A—Transition point of linear decrease stage and constant stage of porosity; B—Occurrence depth of overpressures of different origins; C—Normal compaction/normal pressure; D—Equivalent depth of disequilibrium compaction.