摘要
储层非均质性、孔隙结构对油气田的勘探和开发效果影响很大,文章首先通过百色盆地东部坳陷中央凹陷带那读组大量岩心铸体薄片及物性等分析资料,分析了储层渗透率影响因素,提出根据测井资料精细解释的孔隙度(φ)、泥质含量(Vsh)、粒度中值(Md)、束缚水饱和度(Swirr)等资料,用回归法实现渗透率的预测。以渗透率为主要参数对那读组储层的非均质性进行了定量-半定量研究;根据孔隙结构(渗透率与孔隙度的比值)与孔喉半径有良好的相关性,实现对储层的孔隙结构进行评价。经系统研究,认为那读组储层层内整体表现为较强的非均质性、孔隙结构较复杂。文章最后给出了2口井的解释实例。
Reservoir heterogeneity and rock pore structure have an effect on the exploitation and development of oil-gas fields.Based on the analyzed well logging data of core in Nadu formation of centre depression in the East Col of Baise basin,the affect factors of reservoir permeability are studied.Based on careful-interpreted well logging data,which include porosity(φ),shale content(Vsh),granularity mid-value(Md),reducible water saturation(Swirr)and so on,the prediction of reservoir permeability is realized by the regression analysis method,the heterogeneity in Nadu formation is researched in definite quantity and half-definite quantity.According to the closely relation of pore structure and pore throat,the characteristics of pore structure are evaluated.In short,the whole shows an intensive heterogeneity and complicated pore structure.Two cases are given in this paper.
出处
《石油仪器》
2008年第3期50-53,101,共4页
Petroleum Instruments
关键词
渗透率
那读蛆
储层非均质性
孔隙结构
permeability
Nadu formation
reservoir heterogeneity
pore structure
