东濮凹陷文留、桥口与白庙地区地层超压对有机质演化的影响

东濮凹陷内普遍发育超压。笔者从演化的各个反应过程进行了详细分析比较,认为东濮凹陷深层超压对有机质热演化过程的抑制作用主要表现在对烃类热裂解、烃类结构或构型的抑制,而对干酪根热降解过程并没有产生可识别的抑制作用。深层超压对烃类热裂解的抑制作用,直接扩大了勘探层位,有利于东濮凹陷深层的勘探与开发。

Effect of Overpressure on Organic matter Evolution in Wenliu, Qiaokou and Baimiao Regions of Dongpu Depression

There exists overpressure within Dongpu Depression. It is analyzed and contrasted from each process of evolution. It is considered that the deep overpressure in Dongpu Depression controls the thermal evolution of organic matter that presents the control on thermal cracking of hydrocarbon, hydrocarbon structure and its constrain, but no recognizable constrain is produced in the process of thermal degradation of Kerogen. The constrain of deep overpressure to thermal cracking of hydrocarbon directly expands to exploration zones, which is beneficial for exploration and production in Dongpu Depression.