摘要
野外地质调查、地震剖面解释及双参1井钻探资料分析表明:吉林省双阳盆地下白垩统长安组湖相暗色泥岩分布广且厚度稳定,有机质丰度高,有机质类型以Ⅱ1型干酪根为主,有机质演化处于成熟阶段,生烃潜力好,是盆内好-最好烃源岩的有利烃源岩层位;此外,分布广泛的盆地基底中二叠统范家屯组暗色泥岩也有一定的生气能力。其与长安组发育的扇三角洲非常规致密储集层砂体及具有一定储集性能的安民组、金家屯组中酸性火山建造,形成了自生自储、上生下储、下生上储等有利生储盖组合;并与盆地中部的次级隆起共同构架了较为有利的中部油气聚集区带,具有一定的勘探前景。
Field geological surveys, interpretation of seismic sections and Shuangcan 1 drilling data show that the dark mudstone of the Lower Cretaceous Chang an Formation in Shuangyang Basin of Jilin province is widely distributed, with stable thickness and high organic matter content. The organic matter type is mainly Ⅱ 1 type kerogen, the organic matter evolution is at the mature level, and with better hydrocarbon-generating potential. It is considered to be the favorable source rock formation for good-best source rocks in Shuangyang Basin. Additionally, the dark mudstone of the Middle Permian Fanjiatun Formation which is widely distributed in the basement of the basin has good gas-generating potential. Fan-delta unconventional tight reservoir sand bodies were developed in the Chang an Formation, while medium-acid volcanic structures with certain reservoir properties were developed in the Anmin Formation and Jinjiatun Formation. Favorable self-sourcing and self-reservoiring, lower-sourcing and upper-reservoiring, upper-sourcing and lower-reservoiring assemblages were formed. Together with the secondary uplift in the central part of the basin, a favorable central oil and gas accumulation zone with certain exploration prospects was formed.
作者
梁本营
刘玉梅
周新桂
李世臻
董清水
刘卫彬
张文浩
LIANG Ben-ying;LIU Yu-mei;ZHOU Xin-gui;LI Shi-zhen;DONG Qing-shui;LIU Wei-bin;ZHANG Wen-hao(College of Earth Sciences,Jilin University,Changchun 130061,China;College of Applied Technology,Jilin University,Changchun 130022,China;Oil and Gas Survey,China Geological Survey,Beijing100083,China;Key Laboratory for Oil Shale and Coexistent Energy Minerals of Jilin Province of Jilin University,Changchun 130061,China)
出处
《世界地质》
CAS
2019年第2期420-429,共10页
World Geology
基金
中国地质调查局项目(12120115001701)资助
关键词
双阳盆地
地层-构造格架
油气地质条件
生储盖组合特征
油气勘探前景
Shuangyang Basin
stratigraphic-structral framework
geological conditions for oil and gas accumulation
characteristics of source-reservoir-cap assemblage
prospects for oil and gas exploration
