辽西低凸起东营组储集层特征与发育控制因素  

Reservoir Characteristics and Development Control Factors of Dongying Formation in the Low Uplift of Western Liaoning

作　　者：周庆安 罗顺社[2] 官玉龙 归航 王国超 刘艺妮 Zhou Qing’an;Luo Shunshe;Guan Yulong;Gui Hang;Wang Guochao;Liu Yini(School of Geosciences,Yangtze University,Wuhan Hubei 430100,China;Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Yangtze University,Wuhan Hubei 430100,China)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]长江大学非常规油气湖北省协同创新中心,湖北武汉430100

出　　处：《石油化工高等学校学报》2019年第1期52-59,共8页Journal of Petrochemical Universities

基　　金：国家重点基础研究发展973计划(2014CB239003)(2011ZX05030-005);国家自然科学基金项目(41672099)

摘　　要：辽西低凸起有较大的油气勘探潜力,是未来油气勘探的有利区。针对该区地质、地层和层序方面等认识不清的问题,应用层序地层学、物源体系分析和沉积岩石学等方法,建立了层序地层格架,探讨了主要目的层东营组的沉积体系展布规律。通过构造-层序地层和沉积相开展整体和系统性研究。根据体系域不同的地质特征和各体系域界面不同的地震反射特征变化,划分出东二层序中低位体系域、湖泛体系域和高位体系域。在此基础上对层序格架内沉积相类型及其有利砂体展布和分布进行了深入的探讨。研究区主要发育三角洲、湖泊和湖底扇等沉积体系。分析层序、构造活动和沉积环境,不同体系域沉积体系域发育特点和有利砂体展布规律,在此基础上综合储层物性特征、有机地球化学特征,指出了研究区下一步有利的油气藏勘探方向。Liaoxi salient has great potential for oil and gas exploration,and it is a favorable area for oil and gas exploration in the future.A view of the unclear understanding of geology,stratigraphy and sequence in this area,the sequence stratigraphic framework was established by using the methods of sequence stratigraphy,sedimentary petrology and provenance system analysis,and the distribution law of the sedimentary system of the main target sequence Dongying formation was discussed.Through structural sequence stratigraphy and sedimentary facies,a comprehensive and systematic study is carried out.According to the different geological characteristics of the system domain and the seismic reflection characteristics of different system interfaces,the middle and lower sequence system tracts,the Lake flood system tract and the high system tract of the eastern two sequence are divided.On this basis,the types of sedimentary facies and the distribution and distribution of favorable sand bodies in sequence framework are discussed.The delta,lake and sublacustrine fan systems are mainly developed in the study area.and the distribution regularity of favorable sand bodies,the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs.Based on the analysis of sequence,tectonic activity and sedimentary environment,the development characteristics of sedimentary system tracts in different system tracts and the distribution regularity of favorable sand bodies,the favorable exploration direction for oil and gas reservoirs in the study area is pointed out by synthesizing the physical and organic geochemical characteristics of reservoirs.

关 键 词：辽西低凸起 层序地层 东营组 体系域 三角洲 

分 类 号：TE122[石油与天然气工程—油气勘探]