基于地震属性的冲积扇沉积微相研究  

Analysis of Alluvial Fan Sedimentary Microfacies Based on Seismic Attributes

作　　者：纪璇[1] 黄凤祥[2] 胡志鹏[1] 龚福华[1] 蔡伟祥[2] Ji Xuan;Huang Fengxiang;Hu Zhipeng;Gong Fuhua;Cai Weixiang(School of Geosciences,Yangtze University,Wuhan 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources,Ministry of Education,Yangtze University,Wuhan 430100,China)

机构地区：[1]长江大学地球科学学院,武汉430100 [2]长江大学油气资源与勘探技术教育部重点实验室,武汉430100

出　　处：《科技通报》2017年第4期56-60,共5页Bulletin of Science and Technology

基　　金：国家自然科学基金(编号:41074104)

摘　　要：利用地震资料将沉积与地震属性相结合,是目前针对钻井资料较少的区域,开展沉积相研究最有效的方法。研究区主要以冲积扇砂砾岩沉积为主,地震反射杂乱,利用常规砂泥岩储层沉积相分析方法较难准确识别各沉积相带特征。通过岩心特征、测录井资料等地质分析,结合地震属性解释结果,确定了目的层沉积特征及演化规律:五3东区上乌尔禾组属于冲积扇沉积体系,物源来自西北方向,主要发育扇根、扇中亚相,有利微相以粗粒度、强振幅的主河道、主槽、辫流线为主。It is the most effective method to carry out the research of sedimentary microfacies by using thetechnic of seismic attribution analysis with the principle of sedimentology in the study area with lessdrilling data.The mainly deposition in Wusandong area,located in the northwestern margin of JunggarBasin,is glutenite from alluvial fan.Because of the desultory interior reflections,it is difficult toaccurately identify the facies characteristics by using conventional sedimentary facies analysis method ofsand mudstone reservoir.Based on the data of cores,mud-logging,assay and logging data,the authorconfirmed sedimentary characteristics and evolution law of Upper Wuerhe Formation in this area.Theresults showed that alluvial facies was the main sediment type of this formation,including main channel,main trough,braided stream sand island,sheetflood,etc,whose provenance mainly from the northwest.

关 键 词：准格尔盆地 上乌尔禾组 冲积扇 地震属性 均方根振幅 

分 类 号：TE122[石油与天然气工程—油气勘探]