海相油气地质2017，Vol.22Issue(4)：19-26,8.DOI:10.3969/j.issn.1672-9854.2017.04.003
珠江口盆地惠州凹陷南部珠江组混合沉积作用
Mixed Clastic and Carbonate Deposits of Zhujiang Formation in the Southern Huizhou Depression, Zhujiangkou Basin
摘要
Abstract
Mixed clastic and carbonate deposits developed extensively in L levels of Zhujiang Formation in the southern Huizhou Depression, Zhujiangkou Basin. Based on seismic sections, drilling data, and core data, the lithological character, spacial distribution and depositional model are studied. The mixed deposits can be subdivided into two types, namely facies mixing and in-situ mixing. The facies mixing deposits the fine grain mixing of layers of siliciclastic shale and micritic carbonates in the overlapping boundary area between shallow marine delta and carbonate platform in a low-energy environment. The in-situ mixing deposits the sand-size particle mixing of siliciclastic sand and bioclastic limestone in a unique layer of delta front in a high-energy environment. The carbonate layers deposited by in-situ mixing play a complex role in the storage capacity and flow performance of reservoirs in L levels. The facies sequence of shale-carbonate-sand-carbonate-shale is identified in in-situ mixing. The factors such as input of terrigenous clastic deposits, paleo-topography, sea-level fluctuation and delta migration influenced the euphotic zone, and controlled the origin and distribution of clastic-carbonate mixing.关键词
混合沉积/三角洲前缘/生物礁/珠江组/惠州凹陷/珠江口盆地Key words
Mixed deposit/Delta front/Zhujiang Formation/Huizhou Depression/Zhujiangkou Basin分类
能源科技引用本文复制引用
昌建波,邹晓萍,余国达,黄映仕..珠江口盆地惠州凹陷南部珠江组混合沉积作用[J].海相油气地质,2017,22(4):19-26,8.基金项目
本文受中国海洋石油总公司重大科技专项 "南海东部海域低孔低渗油气藏勘探开发关键技术研究与实践 (编号: CNOOC-KJ 125 ZDXM 07LTD)"资助 （编号: CNOOC-KJ 125 ZDXM 07LTD）
