珠江口盆地富油层段地球物理识别方法研究——以恩平凹陷为例  

Study on geophysical identification method of "rich oil segment" in the Pearl river mouth basin——Taking Enping sag as an example

作　　者：刘铮 汪瑞良 刘军 罗伟 罗泽 LIU Zheng;WANG Ruiliang;LIU Jun;LUO Wei;LUO Ze(CNOOC Ltd._Shenzhen,Shenzhen 518054,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司,深圳518054

出　　处：《物探化探计算技术》2018年第1期36-43,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家科技重大专项(2016ZX05024-004)

摘　　要：受地震资料分辨率的限制和薄层干涉的影响,单一的薄油层与水层的地球物理特征难以区分。当油层较为富集时,地球物理特征会较明显。在珠江口盆地恩平凹陷,根据钻井实际资料及地震数据并结合地球物理正演模型,确定了油层的富集层段的门槛值。并在此基础上,进一步分析了油层的富集层段的地球物理属性,并采用多属性融合技术代替单一属性技术在恩平凹陷进行了盲井验证,取得了比较理想的预测效果。Subject to seismic resolution and thin-layer interference effects,geophysical characteristics of the single thin oil layer and water layer are difficult to differentiate.But if several thin oil layer gathered together to form a"rich oil segment",geophysical characteristics would be more obvious.The threshold value of"rich oil segment"has been found according to well data,seismic data and geophysical model in ZHUYI.Based on this,analysis geophysical properties of"rich oil segment",several properties instead of single property is used to predict"rich oil segment"in Enping sag,and the result turn out to be right in most places.

关 键 词：富油层段 地球物理特征 属性分析 属性融合 

分 类 号：P631.4[天文地球—地质矿产勘探]