利用主成分曲线进行地层对比

直接运用多条测井曲线进行地层对比,会产生地层信息的冗余,而且不能消除无用信息。为此,采用对岩性反应较灵敏的自然伽玛能谱测井、岩性密度测井及对孔隙度、饱和度较灵敏的补偿地层密度、补偿中子、感应、侧向等测井曲线的主成分曲线,用有序元素最佳匹配法进行地层对比。通过调整两类曲线的权系数,能提高区域岩性对比或油层对比的准确性。

An approach to Stratigraphic Correlation by Using Main Component of Well Logs

Using multiple well logs directly for stratigraphic correlation can result in the redundance of some geolo-gy information, and the unused information can not be elimilated. For this reason, besed on sequential ele-ment optimun match, a method for stratigraphic correlation by using main component of well logs were pro-posed. The well logs used include natural gamma-ray spectrometry, litho-density, compensated formationdensity, compensated neutron, induction and lateral logs, which are sensitive to lithology, porosity and fluidsaturtion, respectively. The accuracy of regional correlation can be enhanced by adjusting the weights oftwo kinds of curves.