Compaction disequilibrium or hydrocarbon generation is main controlling factor of different phases for the development and evolution of overpressure.
压实不均衡和生烃作用分别是本区超压发育、演化不同阶段的主控因素。
Overpressure mechanism is researched from the aspects of compaction disequilibrium, hydrocarbon generation and rock salt sealing according to the geophysical and geochemical data.
低渗透性的沉积物在快速沉降过程中 ，上覆岩层产生的不均衡压实可产生相当大的超压 ，这是沉积盆地形成高压的主要机制。
Results The mechanism of abnormal pressure is related with disequilibrium compaction, increasing of fluid volume and decreasing of pores.
结果超压异常的形成与不均衡压实、孔隙流体增加、孔隙体积减小有关；
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