Towed Seismic Spread Element 3D Structure Determination
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Solution Overview
Problem
In marine seismic surveys, determining the three-dimensional structure of a towed seismic spread element is challenging due to its dynamic geometry changes caused by sea environments and vessel movements, which affects the accuracy of seismic data processing and hydrocarbon deposit identification.
Innovation Solution
A system and method that involve obtaining multiple sets of distance measurements between nodes on the seismic spread element using various locator sources, such as acoustic and optical systems, to determine its three-dimensional structure while in tow, incorporating GPS, pingers, and depth sensors for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple locator sources and measurement systems are used to determine the three-dimensional structure, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system divides the measurement task into multiple independent locator sources (acoustic pingers, optical cameras, GPS receivers) that each perform specific measurement functions. This segmentation allows high precision through multiple specialized sensors while managing complexity by making each component relatively simple and modular.
Solution Approach 2:
The patent employs multiple types of locator sources (acoustic, optical, satellite-based) that can all perform distance and position measurements. This multi-functionality approach improves measurement precision by providing redundant and complementary measurement methods, while the universal nature of these systems reduces overall complexity compared to a single complex measurement system.
2Adaptability or versatility
If the seismic spread element is towed in dynamic marine environments, then adaptability is improved, but stability of the object's composition deteriorates
Solution Approach 1:
The patent explicitly accounts for the dynamic nature of the towed seismic spread element by using multiple locator sources that continuously track and measure the positions of nodes as they move. The system adapts to changing geometries caused by vessel movements and sea conditions, determining the three-dimensional structure in real-time despite the element's non-rigid, dynamic composition.
Solution Approach 2:
The system uses multiple locator sources to continuously monitor and measure the positions of nodes on the seismic spread element. This feedback from multiple independent measurement systems allows the system to track and adapt to dynamic changes in the element's geometry, maintaining measurement accuracy despite environmental disturbances and vessel movements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables accurate determination of the three-dimensional structure of the seismic spread element, improving the processing of seismic data and enhancing the identification of hydrocarbon deposits by providing precise source positions and array geometries, even in dynamic marine environments.
Implementation Method 1
acoustic pingers and hydrophones to obtain a plurality of sets of measurements of distances between nodes
Implementation Method 2
incorporating GPS, pingers, and depth sensors for precise positioning
Implementation Method 3
depth sensors for precise positioning
Data Source
AI summary
A technique includes obtaining a plurality of sets of measurements of distances between nodes located on a seismic spread element while the element is in tow. Each set is acquired in response to the operation of a different set of sources. The technique includes determining a three-dimensional structure of the seismic spread element while in tow based at least in part on the sets of measurements.