定量评价储层孔隙结构的新方法  

Novel Method to Quantitatively Evaluate Pore Structures by Sphere-cylinder Model

作　　者：薛苗苗[1] 章海宁 刘堂晏[1] 孙佩 罗燕颍 

机构地区：[1]海洋地质国家重点实验室(同济大学),上海200092 [2]中国石油集团测井有限公司技术中心,陕西西安710077

出　　处：《测井技术》2014年第1期59-64,共6页Well Logging Technology

基　　金：国家863计划(2006AA06Z214);中国石油集团公司研究项目(2011B-4000)联合资助

摘　　要：孔隙结构与油气的渗流和储集密切相关,因而成为复杂储层评价的重要内容。基于球管模型方法,提出了利用核磁共振实验资料定量评价储层孔隙结构的方法。根据经过压汞数据刻度的核磁共振实验数据,应用球管模型把储层的孔隙结构分解成管形孔和球形孔,计算管形孔和球形孔的分布曲线,再定量计算这2类孔隙的分选系数、歪度和峰态等孔隙结构参数。基于球管模型计算的孔隙结构定量参数与岩心常规分析得到的物性参数对储层物性具有一致的评价结论。Pore structures or pore distribution is closely relative to oil percolation capacity ot reservoir, so, they are important parameters for complex reservoir evaluation. Based on sphere cylinder model, this paper presents a novel method to quantitatively calculate reservoir pore structures by Nuclear Magnetic Resonance（NMR） lab data. According to the NMR lab data scaled by mercury injection data, reservoir pore structures are divided into spherical pores and cylindrical pores with sphere-cylinder model method so as to calculate spherical pores and cylindrical pores curves. Then, based on this, we can quantitatively calculate the two kinds of pore structures parameters, including sorting coefficient, skewness and kurtosis and so on. All the pore structures constants show a satisfactorily agreement with rock lab analysis.

关 键 词：测井解释 孔隙结构 核磁共振 回波反演 球管模型 压汞分析 

分 类 号：P631.84[天文地球—地质矿产勘探]