锦州南油田古近系辫状河三角洲前缘沉积特征及砂体叠置模式  

Sedimentary characteristics and sand body superimposition model of Paleogene braided river delta front in Jinzhou south oilfield

作　　者：王双龙 程奇 房娜 文佳涛 李广龙 WANG Shanglong;CHENG Qi;FANG Na;WEN Jiatao;LI Guanglong(Tianjin Company,CNOOC(China)Co.,Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《石油地质与工程》2020年第6期20-27,共8页Petroleum Geology and Engineering

摘　　要：综合利用岩心、测井、录井、地震以及生产动态资料,建立了锦州南油田沙河街组二段辫状河三角洲前缘沉积模式,明确砂体的展布规律及叠置类型。研究表明,锦州南油田沙河街组二段主要发育辫状河三角洲前缘亚相沉积,局部发育滩坝亚相沉积,其中水下分流河道砂体和河口坝砂体为主要储集体;岩性以细-中粗粒长石岩屑砂岩、岩屑长石砂岩为主,沉积构造类型丰富,平面上发育3个朵叶体;研究区发育5种砂体叠置模式:孤立型、垂向不接触型、垂向接触型、侧向接触型、拼接接触型。In order to clarify the superimposition relationship of braided river delta front sandbodies in the second member of Shahejie formation in south Jinzhou oilfield,by comprehensively using core,logging,logging,seismic and production performance data,the sedimentary model of braided river delta front is established,and the distribution law and superimposed types of front sandbodies are clarified.The study results show that the braided river delta front subfacies are mainly developed in the second member of Shahejie formation in south Jinzhou oilfield,and beach bar subfacies are developed locally.Among them,underwater distributary channel sand body and mouth bar sand body are the main reservoir bodies;the lithology is mainly of fine medium coarse feldspathic lithic sandstone and lithic arkose,with rich sedimentary structure types,and three lobes are developed on the plane.There are five types of sand body superimposition modes in the study area:isolated type,vertical non-contact type,vertical contact type,lateral contact type and splicing contact type.

关 键 词：锦州南油田 辫状河三角洲前缘 沉积特征 砂体叠置模式 

分 类 号：TE111.3[石油与天然气工程—油气勘探]