鄂尔多斯盆地南部Y地区测井曲线标准化及其效果  

The Standardization of Well Logs in the Y Area of the Southern Ordos Basin

作　　者：周万勇[1] 董亮[2] 李功强 骆淼[4] Zhou Wanyong;Dong Liang;Li Gongqiang;Luo Miao(Coal Geological and Geophysical Survey Team of Hubei Province,Wuhan Hubei 430200,China;Changjiang Institute of Detection and Survey,Ministry of Water Resources,Wuhan Hubei 430010,China;NorthChina Measurement and Control Company of Sinopec Matrix Corporation,Zhengzhou Henan 450006,China;School of Geophysics and Geomatics,China University of Geosciences,Wuhan Hubei 430074,China)

机构地区：[1]湖北煤炭地质物探测量队,湖北武汉430200 [2]水利部长江勘测技术研究所,湖北武汉430010 [3]中石化经纬有限公司华北测控公司,河南郑州450006 [4]中国地质大学地球物理与空间信息学院,湖北武汉430074

出　　处：《工程地球物理学报》2025年第1期109-117,共9页Chinese Journal of Engineering Geophysics

基　　金：国家自然科学基金(编号:41574121)。

摘　　要：为了实现区域大量测井数据的标准化,消除不同井之间测井数据存在的系统误差,本文以鄂尔多斯南部地区Y地区的测井数据为例,研究了测井数据标准化的方法。针对研究区域的地层特点,本文选取延安组延7中部的泥岩层作为标准层,使用频数直方图法分析了标准层测井曲线值的分布特征,得到虚拟参考井的测井值,其他井根据虚拟参考井的测井值进行校正。以W2-2井和W2-3井为例,绘制了自然伽马、声波时差、密度和补偿中子测井曲线标准化前后的对比图,使用岩心测试孔隙度、密度与标准化前后的测井孔隙度、密度进行对比,结果表明:经过标准化处理之后的密度、孔隙度测井值更加接近岩心测试的结果。In order to eliminate the systematic error of logging data from Y area of Southern Ordos Basin and achieve the standardization of well logs,this paper explored the standardization method for the study area.According to the litholoy sequence of the study area,the mudstone layer in the middle of Yan 7 Formation of Yan’an group was selected as the standard layer,then a virtual reference well was constructed to compute the correction value for each well.The comparison diagram of natural gamma ray,acoustic,density and compensated neutron logging curves of W2-2 and W2-3 before and after standardization was drawn.The porosity and density obtained by core analysis were compared with those obtained by logging data before and after the standardization.The results showed a better accuracy and consistency of density and porosity after the standardization.

关 键 词：测井曲线 标准化 标准层 频数直方图 效果分析 

分 类 号：P631.8[天文地球—地质矿产勘探]