Minimum Bounding Box Grid for Seismic Surveys
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Solution Overview
Problem
Existing seismic data processing methods often result in bounding boxes that are larger than necessary, leading to inefficient use of space and increased computational resources, as well as impacting the accuracy of subsurface geological modeling.
Innovation Solution
The method involves constructing a convex hull of the seismic survey area, determining a minimum bounding box containing the minimum convex hull area, and generating two linear maps based on this bounding box using a rotation angle and axis origin. These linear maps are then used to generate a grid populated by geological models of the subsurface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a conventional bounding box method is used for seismic survey area, then the grid coverage is simple to implement, but the bounding box area is larger than necessary leading to inefficient space utilization
Solution Approach 1:
The method segments the bounding box determination process into distinct steps: constructing convex hull from survey points, determining minimum bounding box containing the convex hull, and generating linear maps. This segmentation allows for optimized area calculation while maintaining manageable computational complexity through systematic processing of intermediate results.
Solution Approach 2:
The invention introduces rotational transformation by determining a minimum bounding box based on a minimum convex hull area with specific orientation. By considering the rotational dimension and optimizing the bounding box orientation relative to the convex hull, the method achieves minimal area coverage that adapts to the actual survey geometry rather than forcing axis-aligned boundaries.
2Area of moving object
If a minimum bounding box is determined based on convex hull, then the space utilization is optimized, but the computational processing time increases
Solution Approach 1:
The method performs preliminary construction of the convex hull from survey points before determining the minimum bounding box. By pre-processing the survey data into a convex hull representation, the subsequent bounding box optimization operates on a simplified geometric form, reducing the computational burden compared to directly optimizing from raw survey points.
Solution Approach 2:
The invention extracts the essential geometric characteristics of the survey area by constructing a convex hull that captures the boundary definition. This extraction separates the critical spatial information from the complete survey dataset, enabling efficient bounding box determination while discarding redundant internal point information.
3Manufacturing precision
If the grid is not aligned with the minimum bounding box, then the implementation is simpler, but the accuracy of subsurface geological modeling decreases
Solution Approach 1:
The method changes the coordinate system parameters by generating linear maps that transform between the minimum bounding box coordinate system and the survey grid coordinate system. These linear maps incorporate rotation angles and scaling factors that align the grid with the optimized bounding box orientation, thereby improving modeling accuracy while managing complexity through mathematical transformation.
Solution Approach 2:
The linear maps serve as intermediary transformations between the minimum bounding box coordinate system and the actual survey grid. Rather than directly aligning the grid with the bounding box, the linear maps mediate the coordinate transformation, allowing the grid to maintain its implementation simplicity while achieving alignment benefits through the intermediary mathematical relationship.
Data Source
AI summary
A method and a system for determining a minimum bounding box-based grid are disclosed. The method includes obtaining a seismic survey of an area and constructing a convex hull of the seismic survey area. Further, the method includes determining a minimum bounding box containing a minimum convex hull area and generating two linear maps based on the minimum bounding box using a rotation angle and an axis origin. The two linear maps are used to generate a grid populated by geological models of a subsurface.