A multi-well complex lithology intelligent identification method and system based on logging data
A technology of well logging data and complex lithology, applied in borehole/well parts, character and pattern recognition, measurement, etc., can solve the problems of high cost of coring, low accuracy of lithology identification results, single characteristic logging curve, etc. problem, to achieve the effect of improving speed and accuracy
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[0033] The invention relates to an intelligent identification method of multi-well complex lithology based on well logging data. Firstly, the target well logging data file is determined and the format conversion and normalization preprocessing are performed, and then according to the key core wells in the whole area in the core well Based on the known lithology of each key core well, the log curve data of each key core well is screened and / or feature combination expanded to obtain the log curve data sensitive to lithology, and then according to the known lithology of the core well section, the The logging curve data sensitive to lithological response is tagged and calibrated to form a sample database. At the same time, the unlabeled logging curve data of other wells in the whole area except key core wells are used to form a database to be tested, and then the data in the sample database is used to Combine several machine learning algorithms for machine learning training and aut...
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