双源距密度测井响应关系的研究  

Research on Logging Response Relation of Dual-Detector Density Tool

作　　者：郭华[1] 

机构地区：[1]中原油田测井公司,河南濮阳457000

出　　处：《工程地球物理学报》2008年第3期304-310,共7页Chinese Journal of Engineering Geophysics

基　　金：中原石油勘探局2003年局级项目(编号:2003904)

摘　　要：现在使用的双源距密度测井响应关系较理想化,很多影响因素都忽略了。为了推导双源距密度测井仪刻度的响应关系,采取对测井仪器进行一级刻度,得到仪器响应地层的计数率"脊-肋"图版。然后对图版进行研究和分析,选用最小二乘拟合法对图版数据进行拟合,并针对"肋"线分段精细拟合。经过多次反复拟合,得出了密度值和校正密度值的测井响应算法。将新测井算法应用于数控测井系统中并同现在的算法进行对比,用实测数据进行验证,结果表明,新算法准确度较高,提高了工程测井的质量。The dual--detector density logging response relation has been widely used, but some factors have been neglected. In order to make the response relations of density logging tool, the calibration of logging tool is studied. And the ＂spine--and--rib＂ plot of response relation of the tool is obtained to make a father research and analysis. Then the least square fitting method is selected to fit the chart board data. Fitted many times, the dual--detector density logging response relations are set up. Compared with the traditional method, the results from the new method shows that the algorithms of logging are more accurate.

关 键 词：双源距密度测井 最小二乘拟合法 核测井技术 测井响应关系 

分 类 号：P631.8[天文地球—地质矿产勘探]