石油实验地质2017，Vol.39Issue(3)：295-303,9.DOI:10.11781/sysydz201703295
四川盆地下寒武统烃灶动态演化分析
Dynamic evolution of the hydrocarbon kitchen in the Lower Cambrian, Sichuan Basin
摘要
Abstract
The Lower Paleozoic marine source rocks in the Sichuan Basin became mature during the early stage and are over mature now.The hydrocarbon kitchen changed from a kerogen pyrolysis type to an ancient oil reservoir cracking type, resulting in successive hydrocarbon supply, which controlled hydrocarbon accumulation in the Lower Paleozoic highly mature and over mature strata.As a result, the analysis and accurate identification of the dynamic evolution of hydrocarbon kitchen is fundamental for exploration.We studied the tectonic, sedimentary evolution and thermal systems in the Sichuan Basin, and described the distribution of the kerogen type hydrocarbon kitchen in the Lower Cambrian Niutitang Formation using a TSM basin modelling system, based on the burial, thermal evolution and hydrocarbon generation histories of source rocks.We also identified the location of the ancient oil kitchen and dynamically traced the hydrocarbon kitchen using an accumulation probability method, combined with the analyses of ancient structure, fluid potential and effective reservoir.The Niutitang source rocks generated and discharged hydrocarbon during the Caledonian and Hercynian periods, and the kitchen center was found in Ziyang, Yibin, and Chishui in the southwest, Xiushan and Lichuan in the east, and in the northeastern margin of the Sichuan Basin.At the end of Late Indosinian, most source rocks were over mature and had expelled a large amount of hydrocarbon.Ancient oil kitchens took the role of hydrocarbon supply instead of kerogen pyrolysis kitchens, and were found mainly in Ziyang, Chongqing, Yibin and the southern, northern, and northeastern margins of the basin.关键词
烃灶/动态演化/成烃成藏/下寒武统/四川盆地Key words
hydrocarbon kitchen/dynamic evolution/hydrocarbon generation and reservoir formation/Lower Cambrian/Sichuan Basin分类
能源科技引用本文复制引用
刘光祥,罗开平,张长江,管宏林,曹清古,陈拥峰..四川盆地下寒武统烃灶动态演化分析[J].石油实验地质,2017,39(3):295-303,9.基金项目
中国石化科技部项目(P11087)资助. （P11087）
