A new method of well log stratigraphie correlation is being described. The method is based on a heuristic waveform correlation scheme uisng relational tree data structure. The relational tree is used to provide a complete description of the contexture relationaships of the waveforms and a distance measuring process incorporated with a cross-over and multiple- links elimination procedure is impletmented to optimize the waveform correlation. Results have shown that the method is capable of handling the thickening, thinning and the missing strata which normally occur in stratigraphie correlation using well log data.

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