特低渗油层测井精细解释与分类评价技术  

Fine Logging Interpretation and Classification Evaluation of Extra-Low Permeability Reservoirs

作　　者：侯雨庭[1] 李高仁[1] 郭清娅[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院

出　　处：《低渗透油气田》2006年第1期51-54,共4页

摘　　要：介绍了适应特低渗储层的孔隙度、渗透率解释模型，基于Archie公式变m指数的饱和度计算。利用核磁共振测井识别特低渗储层，基于特低渗储层的孔隙结构特征，利用聚类分析法把研究区的储层分为三类，并建立了表征储层原始含油饱和度上限的孔隙结构参数0．1μm进汞饱和度（SHg0．1）与常规测井的映射关系。根据储层分类结果并结合储能系数预测特低渗储层产能，减少了试油过程中的无效压裂，应用效果良好。A model of porosity and permeability interpretation for low-permeability reservoirs is introduced in the paper. So is the saturation calculation based on the changing exponent m of Archie equatioil. Extra-low permeability reservoirs are identified by using the nuclear magnetic resonance （NMR.） logging. Based on the pore structure characteristics of extra-low permeability reservoirs, we divide reservoin in the study zone into three types by using the cluster analysis. A mapping relationship is set up between the conventional well logging and pore structure parameter SHg0.1 （saturation of Hg-injection through 0.1μm diameter pore-throat） representing the upper limit of initial oil saturation. The deliverability of extra-low Permeable reservoirs is predicted according to the reservoir classification result and reservoir energy coefficient （hФSo-product of effective thickness, porosity and oil saturation）. Invalid fracturing work is minimized in testing for off, with good results of application.

关 键 词：特低渗储层 测井评价 孔隙结构 分类评价 

分 类 号：TE15[石油与天然气工程—油气勘探] P618.130.2[天文地球—矿床学]