Oil & Gas Geology ›› 2004, Vol. 25 ›› Issue (1): 102-105,114.doi: 10.11743/ogg20040119

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Application of pattern recognition in stratigraphic division

Chen Qinghua1,2, Zhang Fengqi2, Sun Shupeng3, Liu Chiyang1   

  1. 1. Department of Geology, Northwest University, Xi'an, Shaanxi;
    2. Petroleum Resource Science Department, University of Petroleum, Dongying, Shandong;
    3. Library of University of Petroleum, Dongying, Shandong
  • Received:2003-06-02 Online:2004-02-25 Published:2012-01-16

Abstract:

Pattern recognition is to subsume undetermined patterns with computer technologies based on study and classification of the known patterns.Pattern recognition can be performed in three steps.First,preprocess data through Fourier analysis,regression analysis and multi-point smoothing;then calculate frequency spectrum of the known wells' geological data by using cyclical strategraphy and perform feature study and extraction and pattern classification with Milankovitch cyclic components;and finally classify strata in other wells by using the established patterns.Strategraphic division has been performed in 40 wells in Dagang oilfield with the pattern recognition method and the results are in good agreement with the original ones and have better accuracy.

Key words: pattern recognition, stratigraphic division, cyclical stratigraphy

CLC Number: