珠江口盆地惠州凹陷HZ25-3-2井珠江组沉积相特征  

Characters of the sedimentary facies of Paleogene Zhujiang Formation in Huizhou depression,Zhujiangkou basin,China

作　　者：李潇雨[1] 郑荣才[1] 魏钦廉[1] 王峻[1] 耿威[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,成都610059

出　　处：《成都理工大学学报（自然科学版）》2007年第3期251-258,共8页Journal of Chengdu University of Technology: Science & Technology Edition

摘　　要：以岩心描述、岩石学特征和剖面结构分析为依据,以HZ25-3-2井为代表,详细研究了珠江口盆地惠州凹陷新近系中新统珠江组砂岩储层的沉积相类型,从中划分出海相河控三角州和陆棚两种沉积体系,探讨了此两种沉积体系的基本特征,识别出连续进积型、连续退积型和加积型三角洲沉积演化序列和陆棚沉积演化序列。在此基础上,建立了珠江组海相河控三角洲沉积模式,提出水下分流河道微相、河口坝微相以及前缘席状砂微相是砂岩储层分布和发育的最有利相带。This paper studies the sedimentary facies types of sandstone reservoir in the Miocene Zhujiang Formation in Huizhou depression in Zhujiangkou basin. Based on the analyses of the core description, the petrology characteristic and section structure and taking Well HZ25-3-2 as a representative, the authors divide the sedimentary systems into two types, that is, the marine facies fluvial-dominated delta and continental shelf, discuss the essential features of the tow sedimentary systems, and then further recognize two delta sedimentary evolution sequence, that is, the continuous progradational and retrograding types. On this basis, the marine facies fluvial-dominated delta sedimentary pattern of the Zhujiang Formation is constructed and the submerged distributary river course microfacies, debouch bar microfacies and frontal sheet sand microfacies are considered as the most favorable facies belts for sandstone reservoir distribution and development.

关 键 词：惠州凹陷 新近系珠江组 河控三角洲 陆棚 相模式 储层沉积学 

分 类 号：TE121.3[石油与天然气工程—油气勘探]