渤海湾盆地济阳、临清坳陷上古生界烃源岩生烃史分析

HYDROCARBON GENERATION HISTORY OF UPPER PALEOZOIC SOURCE ROCKS OF JIYANG AND LINQING DEPRESSIONS, BOHAI BAY BASIN

朱建辉 胡宗全 吕剑虹 王保华 周新科

Zhu Jianhui Hu Zongquan Lü Jianhong Wang Baohua Zhou Xinke

油气藏地质及开发工程国家重点实验室(成都理工大学), 成都, 610059 2. 成都理工大学能源学院, 成都, 610059 3. 中国石油化工股份有限公司, 石油勘探开发研究院, 无锡石油地质研究所, 江苏, 无锡, 214151 4. 中国石油化工股份有限公司, 石油勘探开发研究院, 北京, 100083

State Key Laboratory of Oil-and-gas Reservoirs Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China 2. School of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059, China 3. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China 4. Research Institute of Petroleum Exploration and Production, SINOPEC, Beijing 100083, China

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.

中国石油化工股份有限公司科技部项目(P03076)

https://doi.org/10.11781/sysydz201001058