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US 2012/0236686 A1Published application
Seismic imaging apparatus without edge reflections and method for the same
AssigneeSeoul National University R&Db Foundation
InventorChangsoo Shin
Life of this patent
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Abstract
A seismic imaging technology for imaging a subsurface structure is provided. The seismic imaging technology is applied to modeling parameters of a wave equation redefined in a new coordinate system resulting from converting space axes into a logarithmic scale. The redefined wave equation is applied to wave inversion or reverse-time migration.
Claims10
A seismic imaging apparatus comprising:
- a waveform inversion unit configured to obtain a modeling parameter of a wave equation redefined in a new coordinate system resulting from converting space axes into a logarithmic scale, while continuously updating the modeling parameter in the direction of minimizing a residual function regarding an error between modeling data and measured data, wherein the modeling data is a solution of the wave equation to which the modeling parameter has been applied and the measured data has been measured by a receiver;
- and
- a subsurface structure display unit configured to image a subsurface structure from the modeling parameter.
A seismic imaging method comprising:
- obtaining a modeling parameter of a wave equation redefined in a new coordinate system resulting from converting space axes into a logarithmic scale, while continuously updating the modeling parameter in the direction of minimizing a residual function regarding an error between modeling data and measured data, wherein the modeling data is a solution of the wave equation to which the modeling parameter has been applied and the measured data has been measured by a receiver;
- and
- imaging a subsurface structure from the modeling parameter.
Dependencies are inferred from the claim text.