摘要
松辽盆地南部浅层天然气主要赋存于晚白垩纪地层中。通过分析研究松辽盆地南部浅层实测天然气组分和同位素地球化学数据,对天然气成因类型进行划分,对松辽盆地南部浅层气分布、成因类型和成藏主控因素等进行研究。结果表明,松辽盆地南部存在三套烃源岩,为不同成因类型的浅层气成藏提供气源;圈闭为天然气成藏提供有利的场所,存在4种圈闭类型;青山口组和嫩江组泥岩提供了良好的盖层条件;多期次的构造运动、断层重新活动,提供了浅层气运移通道和遮挡物。在此基础上优选出了4个浅层气有利目标区,对松辽盆地南部浅层气勘探具有指导意义。
The shallow natural gas in the south of Songliao basin mainly occurs in the late Cretaceous strata.Based on the analysis and study of the measured gas composition and isotopic geochemical data in the southern part of Songliao basin,the genetic types of natural gas are classified,and the distribution,genetic types and main controlling factors of shallow gas accumulation in the southern part of Songliao basin are studied.The results show that there are three sets of source rocks in the south of Songliao basin,which provide gas sources for shallow gas accumulation of different genetic types;traps provide favorable places for natural gas accumulation,and there are four types of traps;mudstone of Qingshankou formation and Nenjiang formation provide good caprock conditions;multiple tectonic movements and fault reactivation provide shallow gas migration channels and barriers.On the basis mentioned above,four favorable target areas of shallow gas are selected,which is of guiding significance for the exploration of shallow gas in the south of Songliao basin.
作者
王建强
WANG Jianqiang(Qingdao Institute of Marine Geology,China Geological Survey,Qingdao,Shandong 266071,China;Functional Laboratory of Marine Mineral Resources Evaluation and Exploration Technology,Qingdao National Laboratory of Marine Science and Technology,Qingdao,Shandong 266071,China)
出处
《石油地质与工程》
CAS
2020年第3期36-42,共7页
Petroleum Geology and Engineering
基金
国家自然科学基金项目“南黄海崂山隆起中南部海底渗漏烃类源区示踪与运移路径重建”(41776075)
山东省基金项目“南黄海盆地崂山隆起海底烃类渗漏成因及其三维模型构建”(ZR2019BD067)。
关键词
松辽盆地南部
浅层气
天然气成因类型
主控因素
有利目标区
southern Songliao basin
shallow gas
genetic type of natural gas
main controlling factors
favorable target areas
