摘要
在沾车凹陷复杂的岩性条件下,按油田不同层位进行岩电资料统计分析,并建立其饱和度解释模型是合适的。沾车凹陷孔隙度与地层因素、含水饱和度与电阻增大率的相关性均良好,这种良好的相关性将会使该地区的饱和度解释模型更具有代表性,因此划分出的油水层系更加精确,其胶结指数与岩样的其它岩性参数基本上相关良好,说明它在一定程度上反映了岩样的孔隙结构特性;其饱和度指数与岩样的其它岩性参数基本上不相关,说明它主要反映了饱和度大小及其分布特征的影响,其它影响因素处于次要地位。胶结指数与均质系数基本上是相关的,因此,胶结指数m可以作为描述岩石孔隙结构均质程度的一个新的特征参数。
This article studies on lithological and electrical characters in Zhangche sag. Based on theory and practice, it＇s appropriate to establish saturation interpretation model of Zhanche sag by analyzing lithological and electrical data of different levels because of its complicated lithological condition. Porosity versus stratum factor, water saturation versus resistivity increment have good correlativity, so the saturation interpretation model for the sag is representative, and interpretation of water and oil level are more accurate. The good correlativity between cementation factor and other lithological pa- rameters shows that cementation factor reflects the pore structure character to a certain extent. The bad correlativity between saturation exponent and other lithological parameters shows that saturation exponent mainly reflects saturation magnitude and its distribution, and other factors are not so important. Basically, cementation factor is correlative with homogeneous coefficient and can be taken as a new characteristic parameter reflecting homogeneity of rock pore structure.
出处
《测井技术》
CAS
CSCD
2006年第4期294-297,共4页
Well Logging Technology
基金
中国石化科技攻关项目"济阳坳陷低电阻油层识别评价及应用技术研究"(P04020)
关键词
测井解释
岩石电性
渗透率
孔隙度
孔隙结构
阿尔奇公式
胶结指数
饱和指数
log interpretation
lithological and electrical character
permeability
porosity
pore structure
Archie formula
cementation factor
saturation exponent
