地质科学2017，Vol.52Issue(3)：964-979,16.DOI:10.12017/dzkx.2017.061
吉木萨尔凹陷二叠统芦草沟组地层与沉积环境特征研究
Characteristics of strata and depositional environment of the Permian Lucaogou Formation in Jimusar sag
摘要
Abstract
In recent years,Lucaogou Formation of Jimusar sag in Junggar Basin is one of the hotspots of exploration and development of tight sandstone oil reservoirs in China.Based on the analysis of main rock types of Lucaogou Formation,we use the cores,thin section,well logging and seismic data to comprehensively study on the sedimentary evolution,sequence stratigraphic framework,and the changes of sedimentary environment of the Lucaogou Formaiton.The study shows that the lithology of Lucaogou Formation is mainly composed of clastic rock and carbonate rock composition.The clastic rocks are mainly shale and siltstone (fine)sandstone,the carbonate rocks are mainly dolomite and limestone.The study of sedimentary characteristics shows that the lower,middle and upper parts of the mud shale segment were mainly developed in semi-deep-deep lake facies in the period of lake transgression,and the shale and mud are the main hydrocarbon source rock.The lower and upper parts of the tight sandstone were developed in the shallow lake facies and delta-front facies in the period of lake regression.Due to the late regional uplift,the sedimentary environment of Lucaogou Formation is gradually changed from the early open lake to the later limited lake,and this is also along with sedimentary water becoming more the salty and reductive.关键词
沉积演化/沉积环境/芦草沟组/致密油/吉木萨尔凹陷Key words
Sedimentary evolution/Sedimentary environment/Lucaogou Formation/Tight oil/Jimsar sag分类
天文与地球科学引用本文复制引用
邱振,姜琳,陶辉飞..吉木萨尔凹陷二叠统芦草沟组地层与沉积环境特征研究[J].地质科学,2017,52(3):964-979,16.基金项目
中石油廊坊分院项目(编号:XN41601,XN41603)、中国科学院先导专项(编号:XDB10010103)和福建省属高校科研专项(编号:JK2015048)资助. （编号:XN41601,XN41603）
