Histogram-Guided Frequency Representation of a Seismic Isochronous Surface
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Solution Overview
Problem
Human interpreters face challenges in analyzing seismic images due to the overwhelming amount of processing data, making it difficult to identify relevant information for geological formations.
Innovation Solution
A method is proposed to automatically process seismic images by determining an isochronous surface, converting pixel intervals to frequency-domain representations, computing histograms, and selecting a reference frequency-domain representation for display to a human interpreter, thereby reducing the data volume while focusing on relevant geological time information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple processing data are derived from seismic image, then information completeness is improved, but data volume increases making it difficult for human interpreters to identify relevant information
Solution Approach 1:
The patent extracts only the most relevant frequency-domain representation (reference frequency-domain representation) from the multiple possible representations. By selecting a single representative frequency-domain representation based on histogram analysis rather than presenting all possible representations, the system extracts only the essential information needed for geological formation analysis, reducing data volume while maintaining information completeness.
Solution Approach 2:
The patent applies local quality by focusing the frequency-domain conversion on specific intervals of pixels centered on intersection points with the isochronous surface. This localized approach ensures that only the most relevant local regions are processed and displayed, rather than converting the entire seismic image, thereby reducing overall data volume while preserving critical geological information.
2Loss of information
If frequency-domain conversion is performed on all seismic traces, then analysis completeness is improved, but processing time and computational load increase
Solution Approach 1:
The patent segments the seismic traces into specific intervals centered on intersection points with the isochronous surface. Instead of performing frequency-domain conversion on all traces throughout the entire seismic image, the system processes only the segmented intervals that intersect with the isochronous surface, significantly reducing processing time while maintaining analysis completeness for the relevant geological features.
Solution Approach 2:
The patent applies partial action by performing frequency-domain conversion only on the necessary portions of the seismic data (intervals centered on isochronous surface intersections) rather than the entire dataset. This partial processing approach achieves sufficient analysis completeness without the excessive computational load of processing all traces.
3Loss of information
If multiple frequency-domain representations are generated, then information richness is improved, but ease of operation decreases due to difficulty in selecting relevant data
Solution Approach 1:
The patent implements self-service by having the system automatically select and display the reference frequency-domain representation without requiring human interpreters to manually choose from multiple representations. The histogram-based selection mechanism automatically identifies and presents the most relevant frequency-domain representation, making the system self-serve the information selection task and significantly improving ease of operation.
Solution Approach 2:
The patent uses histogram analysis as a feedback mechanism to automatically evaluate and select the most appropriate frequency-domain representation. The histograms provide quantitative feedback about the distribution of frequency values, enabling the system to automatically determine which representation is most relevant for geological formation analysis, thereby improving ease of operation while maintaining information richness.
Data Source
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AI summary
The present disclosure relates to a computer implemented method (30) for processing a seismic image comprising seismic traces obtained from seismic measurements performed on a geological formation, said method comprising: - (S30) determining an isochronous surface of the geological formation, based on the seismic image; - (S31) determining an intersection point between each of a plurality of seismic traces and the isochronous surface; - (S32) selecting an interval of pixels of each of the plurality of seismic traces, said interval of pixels being centered on the intersection point; - (S33) converting to frequency-domain the values of each interval of pixels, thereby obtaining a plurality of frequency-domain representations of the isochronous surface associated to respective analysis frequencies; - (S34) computing a histogram of the values of each of a plurality of frequency-domain representations of the isochronous surface; - (S35) selecting a reference frequency-domain representation of the isochronous surface based on the computed histograms.