Logging Identification microphase-deposition sandy beach bar Bayes Discriminant Analysis

The present invention relates to the field of oil and gas exploration and development, in particular, to a sandy beach bar based on Bayes discriminant analysis microphase logging identification method based on the use of core drilling and exploration data identification information bar sand and sand on beaches the logging response characteristic extraction parameters reflecting sand build integrated parameter log response, stepwise discriminant analysis "culling" had no significant effect on the determination of the parameters, can be determined finally established beach bar Bayes discriminant function micro phase. The method of the present invention is to solve the well drilling and core data without a beach bar are predicted recognition problem. Geophysical well logging data with a relatively inexpensive, high continuity characteristics of the different characteristics of the micro phase sandy beach bar has a good response. Therefore, on the basis of exploration and development drilling and core data, calibration data, based on a comprehensive response by extracting logging parameters, the use of statistical methods for sandy beach and bar sedimentary facies discriminant analysis, low cost, high value.