摘要
以榴辉岩为例,探讨了根据常规测井曲线重建中国大陆科学钻探工程(CCSD)主孔氧化物剖面的方法,着重讨论和对比了消除或减小测井曲线中高频噪声的滤波方法,并采用经Lowess和五点平滑滤波后的测井曲线与岩芯实验室分析数据进行了多元逐步回归分析,建立了氧化物测井响应方程,进而重建了CCSD主孔100~1100 m井段榴辉岩的氧化物剖面,为高精度岩性剖面的重建打下了基础,并为地质与地球物理综合研究提供了新的基础资料。
The integrating of logging curves and experimental core analysis data is a very important step to recognize and reconstruct accurately the petrologic section for further studies.The routine for reconstructing oxide profile,based on logging curves from the main hole of the Chinese Continental Scientific Drilling(CCSD),is to eliminate or reduce noises contained in logging data by filtering methods.This paper takes eclogite as an example to illustrate the method.Using filtered logging data and results of experimental core analysis,the equations of logging response to oxide contained in eclogite section are built by multi-variable linear regression analysis progressively.The oxide profiles of eclogite,at a depth from 100 to 1 100 meters in main hole of CCSD,are then obtained.The results provide a basis for reconstructing petrologic section with high spatial resolution,and also offer new information for the study of geological and geophysical integration.