A method, apparatus, and equipment for automatic three-dimensional tomographic tracking based on directed tracing.

By optimizing the seed point growth method using a directed tracing approach and combining time constraints and dynamic threshold values, the problem of accuracy and efficiency in stratigraphic interpretation in fault regions was solved, achieving higher accuracy and more efficient stratigraphic tracing.

CN117590460BActive Publication Date: 2026-06-30PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2022-08-08
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing automatic interpretation algorithms for three-dimensional stratigraphy, especially the seed point growth method, are prone to problems such as time travel and low accuracy when dealing with faults.

Method used

A 3D automatic stratigraphic tracking method based on directed tracking is adopted. By using a pre-determined original seed point vector, combined with time constraints and dynamic correlation thresholds, the priority of growth point diffusion is optimized, the reference correlation threshold of adjacent seismic traces is increased, and the seed point method is constrained step by step to improve the accuracy and efficiency of stratigraphic interpretation.

Benefits of technology

It improves the accuracy and efficiency of stratigraphic interpretation, especially in stratigraphic tracing in fault regions, avoiding time-lapse phenomena and improving computational efficiency.

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Abstract

This invention relates to a method, apparatus, and device for automatic three-dimensional stratigraphic tracking based on directed tracing. It obtains a seed point from a pre-determined original seed point vector and performs stratigraphic tracking on this seed point according to a preset directed tracing method to obtain at least one corresponding growth point. For each growth point that meets the stratigraphic connection criteria, stratigraphic tracking is performed according to the preset directed tracing method. This invention adds time constraints to the seed point growth method, changing the priority of growth point diffusion, improving the interpretation accuracy of stratigraphic layers across faults, and avoiding stratigraphic time travel. It changes the fixed correlation threshold value approach of the classic seed point growth method, instead adopting a cyclically decreasing floating correlation threshold value approach to further optimize the growth point diffusion priority. Simultaneously, it employs a multiple seed point update method, continuously improving stratigraphic interpretation accuracy through step-by-step constraints, reducing the number of iterations, and improving stratigraphic tracking efficiency.
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