Near-surface geological profile generation method and device

By combining satellite remote sensing imagery with digital elevation models, stratigraphic boundaries and attitude data are extracted and processed to generate accurate geological profiles. This solves the problems of low efficiency and inaccurate positioning in traditional geological exploration, and enables efficient and accurate near-surface geological profile mapping.

CN121962480APending Publication Date: 2026-05-01PETROCHINA CO LTD
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Patent Information

Application Number
CN202511255063.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-03
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Traditional geological exploration relies on manual ground surveying and drawing, which is inefficient and lacks accurate spatial positioning, making it difficult to quickly obtain precise information under complex geological conditions, thus limiting the effectiveness of geological applications.

Method used

Based on satellite remote sensing imagery and digital elevation models, stratigraphic boundaries and stratigraphic attitude vector point data are extracted. By calculating the horizontal projection of the plane normal vector, a topographic profile outline is generated and spatially intersected. The stratigraphic attitude vector point data is matched, and geological symbols and colors are automatically filled in to draw a near-surface geological profile on scale.

Benefits of technology

It improves the accuracy and efficiency of near-surface geological profile drawing, reduces mapping error rate, lowers exploration and drawing costs, and provides reliable technical support for fine exploration of oil and gas resources.

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Abstract

The invention discloses a near-surface geological section generation method and device, and the method comprises the steps: extracting a stratum boundary line and stratum occurrence vector point data of a target near-surface geological region based on a satellite remote sensing image and a digital elevation model; elevation information is obtained from the digital elevation model data, and a topographic profile contour line containing a topographic relief curve and a downward extension copy line thereof is generated; carrying out space intersection on the topographic profile contour line and the stratum boundary line to generate an extension stratum node under the contour line; matching corresponding stratum occurrence vector point data for the extended stratum nodes; calculating the downward extension direction of the stratum according to the inclination angle and the inclination angle in the matched stratum occurrence vector point data, and generating a target near-surface stratum unit; and automatically filling geologic symbols and colors according to the name of the target near-surface stratigraphic unit, and drawing the geological profile of the target near-surface geological area according to a preset proportion. The method is used for improving the drawing precision and drawing efficiency of the near-surface address profile.
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