X Multi-channel Fluorescence Instrument in Geochemical Logging Lithology Recognition

Lithologic identification methods were usually used to represent rock types of logging parameters,as determined lithology and logging parameters of the relationship between the basic data,and then by means of mathematical models to identify the establishment of lithology.The spectrometer can be used in the text of geochemical logging data by the elements in the rock to classify lithology and ANN was used to solve the problem of identifying lithological logging.First,it describes the model and algorithm of the BP and SOM network.Then an example is used to show how to build up a network model for logging lithological identification and its application in logging lithological identification.The results indicate that the chemical content through the rock to identify lithologic has a high accuracy rate,the broader scope of the identification;and prove that EDS can be used to solve the problems of lithology identification of logging,which has good prospects.