地震相分析在碳酸盐岩沉积相研究中的应用——以川东北地区PG气田为例  

Application of Seismic Facies Analysis in Carbonate Sedimentary Facies Study——A Case Study of PG Gas Field in the Northeast Area of Sichuan Basin

作　　者：游瑜春[1] 魏水建[1] 郭华军[2] 冯琼[1] 牛小芳[3] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]杭州石油地质研究所,江苏杭州310023 [3]中国石化集团国际石油工程有限公司,北京100011

出　　处：《石油天然气学报》2010年第6期248-251,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05005-002);石油化工联合基金项目(40739904)

摘　　要：针对PG气田井距大、目的层段平面相变快,单纯利用井点资料很难刻画沉积相平面展布特征的问题;利用三维地震资料平面分辨率高的优势,采用Stratimagic地震相分析技术,选取合适参数进行地震相分析,通过与主要地震相单元中单井微相分析成果结合,建立了地震相与沉积相的对应关系,将地震相转化为沉积相。该方法弥补了单纯用钻井资料进行沉积相划分的缺陷,提高了沉积相划分精度。It was difficult to characterize the distribution of sedimentary facies only using well data because of the wide well spacing and the quick lateral facies variation in PG Gas Field.To deal with the both problems,stratimagic seismic facies analysis was used to take full advantage of high resolution of 3D seismic data.It chose appropriate parameters to analyze the seismic facies of target zones,establish the relationship between seismic facies and sedimentary facies and then get the distribution of sedimentary facies through combining the single well microfacies analysis in the main seismic facies unit.This method makes up the limitation of studying sedimentary facies only using well data,and improves the accuracy of it.

关 键 词：地震相 沉积相 PG气田 碳酸盐岩 

分 类 号：P631.4[天文地球—地质矿产勘探]