波阻抗模型正演技术在砂岩储层预测中的应用  

Using forward impedance modeling to trace the sandstone reservoir

作　　者：李显贵[1] 邵吉华[1] 张涛[1] 

机构地区：[1]中国石化西南分公司物探研究院,四川德阳618000

出　　处：《石油物探》2004年第6期584-586,共3页Geophysical Prospecting For Petroleum

摘　　要：介绍了利用P波阻抗模型正演技术进行浅层砂体追踪的实用方法技术。这些方法技术具有如下特点:①根据已知井的岩性特征和声波、密度测井资料等参数制作砂体模型;②利用P波阻抗模型正演方法计算砂体模型的地震记录;③根据P波阻抗模型正演方法计算出的地震响应特征(低频、强振幅)来追踪砂体。在川西地区,利用P波阻抗模型正演技术进行浅层砂体追踪,获得了很好的效果。The forward P-wave impedance modeling has been succeeded in tracing sandstone in the shallow stratum forseismic prospecting in West Sichuan. Some methods and technologies on how to use the P-wave impedance forward modeling technology to trace sandstone in West Sichuan will be described. The characters of this modeling technology are: ①using the known log parameters such as the llthology character, the ac and the density to form the sandstone model; ②using the forward modeling technology for P-wave impedance to compute the seismic data for the sandstone; ③according to seismic response character (low frequency, strong amplitude) of computed seismic data, tracing sandstone reservoir.

关 键 词：正演 砂体 波阻抗 P波 方法技术 地震记录 密度测井 砂岩储层 浅层 川西地区 

分 类 号：TE122[石油与天然气工程—油气勘探] P631[天文地球—地质矿产勘探]