摘要
建立在盆地叠加改造分析基础上的TSM盆地模拟,揭示了渤海湾盆地上古生界多套不同类型烃源岩的生烃演化。济阳、临清坳陷上古生界烃源岩在中三叠世末之前大体进入生烃门限,印支运动造成区域性生烃停滞,中新生代盆地演化差异导致了坳陷内不同凹陷上古生界源岩"二次生烃"过程的差异,从而也影响了对上古生界生烃潜力的评价。模拟结果表明,济阳坳陷上古生界源岩经历了燕山期、早喜山期2个"二次生烃"过程,早喜山期生烃量最大,并且生烃中心随时间呈迁移变化;东濮凹陷在早喜山期开始"二次生烃"过程,平均生烃强度较高。
The TSM basin model software based on analysis of basin superposition and reformation has illustrated hydrocarbon evolution of different source rocks of Upper Paleozoic in the Bohai Bay Basin.The Upper Paleozoic source rocks in the Jiyang and Linqing Depressions have reached hydrocarbon threshold before the end of Middle Triassic and are regionally stagnated by the Indosinian movement.Differences of Meso-Cenozoic basin evolution have resulted in differences of ＇secondary hydrocarbon generation＇ of the Upper Paleozoic source rocks in different sags,hence influencing evaluation of hydrocarbon generation potential of the Upper Paleozoic source rocks.Studies have indicated that,the Upper Paleozoic source rocks in the Jiyang Depression have experienced 2 processes of ＇secondary hydrocarbon generation＇ during Yanshan and early Himalayan epoch,respectively.During the early Himalayan epoch,hydrocarbon generation amount has reached the maximum and the center of hydrocarbon generation migrates at any time.As to the Dongpu Sag,＇secondary hydrocarbon generation＇ starts in the early Himalayan epoch and the average hydrocarbon generation intensity is high.
出处
《石油实验地质》
CAS
CSCD
北大核心
2010年第1期58-63,共6页
Petroleum Geology & Experiment
基金
中国石油化工股份有限公司科技部项目(P03076)
关键词
TSM盆地模拟
二次生烃
生烃强度
烃源岩
上古生界
渤海湾盆地
TSM basin model
secondary hydrocarbon generation
hydrocarbon generation intensity
source rock
Upper Paleozoic
Bohai Bay Basin
