叠前反演在西湖凹陷A构造低渗气层边界识别中的应用  

Application of Pre-stack Inversion to Identification of the Boundary of Low Permeability Gas Reservoir in Xihu Sag

作　　者：邹玮 张雷 姜勇 王超 

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200030

出　　处：《海洋石油》2015年第2期46-49,共4页Offshore Oil

摘　　要：西湖凹陷A构造花港组储层埋藏深,具有低孔渗和横向变化快的特点。通过对构造区已钻井低渗气层的岩石物理分析,研究了弹性参数与岩性、物性和含油气的关系,优选Vp/Vs作为低渗气层识别的敏感参数,并针对构造区开展叠前同步反演,结合Vp/Vs岩性反演和构造解释成果,精细合理地刻画了低渗气层的边界,建立了一套有效的低渗气层识别的技术系列。The Huagang Fm. reservoir in Structure A in Xihu sag is characterized by deep burial depth, with low porosity and low permeability, and quick lateral variation. By analyzing the petrophysics of low permeability gas layers in drilled wells, the relation- ship between elastic parameter with lithology, and physical property with oil-gas bearing conditions has been studied. The parameter of Vp/Vs has been selected as the sensitive parameter to identify low-permeability gas reservoir, and pre-stack inversion has been conducted for the structural area. Combining with lithologic inversion of VpNs and results of structural interpretation, the boundary of low permeability gas reservoir has been determinate, and a set of effective technology has been established for identification of the boundary of the low permeability gas reservoir.

关 键 词：西湖凹陷 低渗储层 叠前同步反演 气层边界 

分 类 号：P631.46[天文地球—地质矿产勘探]