珠江口盆地珠三坳陷西部神狐组地震相与沉积特征  

Seismic facies and sedimentary characteristics of Shenhu Formation in the west of Zhusan depression,the Pearl River Mouth Basin

作　　者：刘芳 何卫军 杨璐 徐万兴 凌涛 LIU Fang;HE Weijun;YANG Lu;XU Wanxing;LING Tao(Hainan Company of China National Offshore Oil Corporation(CNOOC)Ltd.,Haikou 570300,Hainan,China;Zhanjiang Company,CNOOC(China)Co.,Ltd.,Zhanjiang 524057,Guangdong,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海南海口570300 [2]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《石油地质与工程》2023年第5期33-37,45,共6页Petroleum Geology and Engineering

基　　金：国家科技重大专项“大型油气田及煤层气开发”子课题“南海西部海域低渗油藏勘探开发关键技术”(2016ZX05024-006)。

摘　　要：珠三坳陷神狐组由于资料匮乏,一直缺乏系统完整的研究,针对神狐组少井的情况,根据地震剖面形态与反射特征,利用地震振幅、连续性、频率等进行地震相划分,一共识别出四类地震相,通过追踪这些地震相的边界,对比已钻井岩性、古生物等地质资料,对地震相进行相约束,确定了神狐组沉积时期沉积环境以陆相为主,主要发育冲积平原、辫状河三角洲、滨湖、浅湖相,有利区为湖泊斜坡带。Due to few data,there has been a lack of systematic and complete research on Shenhu Formation in Zhusan Depression.In response to few wells in Shenhu Formation,using seismic amplitude,continuity,frequency,etc,four types of seismic facies were identified based on seismic profile morphology and reflection characteristics.By tracing the boundary,comparing the lithology,paleontology and other geological data of drilled wells,the facies constraint is carried out,and the sedimentary environment is mainly of continental facies,mainly developing Alluvial plain,braided river delta,lacustrine and shallow lacustrine facies.The lacustrine slope belt is found to be the most favorable area.

关 键 词：珠江口盆地 珠三坳陷 神狐组 地震相 沉积相 

分 类 号：TE111.3[石油与天然气工程—油气勘探]