集安盆地中新生界地层层序及油气地质条件分析  

Analysis of Mesozoic Cenozoic Stratigraphic Sequence and Oil and Gas Geological Conditions in Ji’an Basin

作　　者：高宁宁 樊欣欣 单玄龙[2] GAO Ningning;FAN Xinxin;SHAN Xuanlong(Gansu Nonferrous Metallurgy Vocational and Technical College,Jinchang 737100,China;Jilin University,Changchun 130000,China)

机构地区：[1]甘肃有色冶金职业技术学院,甘肃金昌737100 [2]吉林大学地球科学学院,吉林长春130000

出　　处：《广东石油化工学院学报》2023年第3期36-40,共5页Journal of Guangdong University of Petrochemical Technology

摘　　要：分析了集安盆地地质剖面、岩性样品、烃源岩地球化学特征、构造发育史、地层层序和油气地质条件,认为集安盆地生油层为鹰嘴砬子组、小河口组泥岩,其中鹰嘴砬子组为中等生油层,石人组煤系为较差生油层,小河口组泥岩为中等生油层。储层主要为鹰嘴砬子组、林子头组以及石人组地层。沉积盖层主要为上三叠系统、中侏罗统和下白垩统地层。盆地南边缺少大面积区域性盖层,盆地北部以断块圈闭为主,以同时期形成的河流-三角洲相砂岩为盖层,可形成较好的岩性圈闭。集安盆地推测有2套下生上储的生储盖组合:即鹰嘴砬子组-林子头组、石人组和小河口组-黑松沟组,该盆地有较大的油气资源潜力。It is believed that the source rocks are the mudstone of the Yingzuilazi Formation and the Xiaohekou Formation,based on the analysis of geological sections,lithological samples,geochemical characteristics of hydrocarbon source rocks in the Ji’an Basin,the study of the structural development history,stratigraphic sequence,and petroleum geological conditions of the basin.The Yingzuilazi Formation is a medium level source rock,the coal measures of the Shiren Formation are relatively poor source rock,and the mudstone of the Xiaohekou Formation is a medium level source rock.The main reservoirs are the Yingzuilazi Formation,Linzitou Formation,and Shiren Formation.The sedimentary cover mainly consists of the Upper Triassic,Middle Jurassic,and Lower Cretaceous strata.The south of the basin lacks a large area of regional cap rock,while the north of the basin is dominated by fault block traps,with fluvial delta facies sandstones formed during the same period as the cap rock,which can form good lithologic traps.Ji’an Basin is speculated to have two sets of source-reservoir-cap combinations of lower generation and upper reservoir:Yingzuilazi Formation(Linzitou Formation and Shiren Formation)and Xiaohekou Formation(Heisonggou Formation).This basin has a large potential for oil and gas resources.

关 键 词：集安盆地 发育史 地层层序 成藏条件 

分 类 号：P597.3[天文地球—地球化学]