An Automatic Extraction Method of Quantitative Description Parameters of Submarine Channel Based on Seismic Data

Abstract

The invention discloses a seismic-data-based method for automatically extracting quantitative description parameters of a submarine water channel. The method comprise: step A, drawing a plane shape ofa water channel; step B, drawing a profile shape of the water channel; step C, measuring characterization parameters of the plane of the water channel; step D, measuring characterization parameters of the profile of the water channel; and step E, measuring characterization parameters of a natural barrier. Therefore, the shapes of the water channel plane and profile can be searched automatically and effectively among lots of irregular and three-dimensional seismic coordinates. According to coordinate points corresponding to the shapes of the plane and the profile, the characterization parameters of the water channel and the natural barrier are measured automatically.

Description

technical field [0001] The invention relates to geological resources and geological engineering, in particular to a method for automatically extracting quantitative description parameters of submarine waterways based on seismic data. Background technique [0002] Three-dimensional seismic exploration technology is the most important method in geophysical exploration, and it is also the main exploration technology for underground natural minerals such as oil, natural gas, and coal in the world. 3D seismic exploration can not only obtain a seismic section map, but also obtain a data volume in 3D space. The density of information points of a three-dimensional data volume can reach 12.5 meters × 12.5 meters (that is, one data is collected within an area of ​​12.5 meters × 12.5 meters), while the density of information points of a two-dimensional survey line is generally up to 1 km × 1 thousand rice. Due to the rich amount of information obtained by 3D seismic exploration and t...

AI Technical Summary

Problems solved by technology

Although some commercial software can qualitatively display the spatial shape of submarine waterways through 3D visualization methods, it cannot achieve the extraction and measurement of quantitative description parameters of submarine waterways

In the field of geological resources and geological engineering, the quantitative description parameter picking method of conventional submarine waterways is mainly through manual methods, that is, manually selecting seismic sections that cross the flow direction of the waterway, and then based on the seismic identification results of the waterway, manually measuring the width, depth and other quantitative descriptions of the waterway. Parameters, which not only have human error, but also low work efficiency, lead to problems such as unreliable channel quantitative description parameter data and less available information, which seriously restricts the pre-drilling prediction of the internal structure and quantitative scale of deep-sea sand bodies, and reduces the well location. Quality of Design and Development Conceptual Design, Increased Drilling Risk

[0004] At present, there is no technical method that can automatically track the flow direction of the outlet channel according to the three-dimensional coordinates. The identification and division of the three-dimensional configuration is mostly manual work, which leads to the inefficiency of configuration interpretation and the error of description, which hinders the use of seismic data to analyze Multidimensional and precise quantitative description of configuration units

In addition, the previous research technology also lacks the automatic description of the three-dimensional shape of the filling structure inside the channel

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