摘要
辽河坳陷大民屯凹陷的超压很发育。大民屯凹陷的超压属于典型的动态超压系统,是“生压速率或生压强度”大于“泄压速率或泄压强度”的结果,“生压”过程终止后超压逐渐消失。在分析构造沉降史、沉积埋藏史、热史及生烃史的基础上,模拟了剩余压力的演化过程,讨论了超压发育和演化的多因素耦合关系,认为压实不均衡和生烃作用分别是大民屯凹陷超压发育、演化不同阶段的主控因素。
The overpressure states of sedimentary basin are rgultiform, and their evolutions are systematic. In the Damintun Sag, when ＂the rate of overpressure generation＂ was higher than ＂the rate of overpressure release＂, overpressure built up, contrarily, with the termination of ＂overpressure generation＂, overpressure diminished. The evolution of overpressure was dynamic in nature. On the basis of analyzing burial histories, hydrocarbon generation histories and heat flow histories, the process of overpressure evolution was simulated. Multiple-factor coupling of the overpressure evolution suggests that the compaction disequilibrium and hydrocarbon generation are the main controlling factors in different phases of the development and evolution of overpressure in this region.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2006年第1期40-43,48,共5页
Petroleum Exploration and Development
基金
国家杰出青年科学基金(40125008)
教育部重大科技项目(10419)
关键词
大民屯凹陷
动态超压
栅合
成因机制
Damintun Sag
dynamic overpressure
coupling
formation mechanism
