Complex lithologic identification method based on decision tree data mining algorithm and complex lithologic identification system thereof
A data mining and lithology identification technology, applied in knowledge expression, earthwork drilling, wellbore/well components, etc., can solve the problems of over-learning of training samples, no application value, and many variable parameters, and achieve accurate lithology The effect of recognition
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[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0036] like figure 1 As shown, in this embodiment, in order to determine the response relationship between different lithologies and logging curves, establish a high-precision, nonlinear lithology identification model, and improve the identification accuracy of complex lithologies, a complex lithology based on decision tree data mining algorithm is proposed. A method for identifying lithology, the method comprising:
[0037] Establish the lithology profile of the sealed coring section, and form the lithology identification data set according to the lithology profile;
[0038] Performing data preprocessing on the lithology identification data set;
[0039] Different logging parameters correspond to different lithol...
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