Crosstalk-free multi-source full waveform inversion method and device independent of wavelet
A full-waveform inversion, multi-source technology, applied in seismic signal processing and other directions, can solve problems such as crosstalk noise, inaccurate wavelet estimation, inversion algorithm error convergence, etc., to achieve the effect of avoiding crosstalk noise
Active Publication Date: 2020-06-02
INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the use of source coding techniques will lead to crosstalk noise, which will lead to wrong convergence of the inversion algorithm, and even fall into the local extremum of the inversion problem
[0003] In addition, due to the existence of crosstalk noise, the conventional wavelet-independent inversion method is difficult to apply to multi-source data, especially when there are wavelet signal differences between different sources, resulting in inaccurate wavelet estimation and reducing the reliability of the inversion results
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0057] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0058] It should be noted tha...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention provides a crosstalk-free multi-seismic-source full-waveform retrieval method and device independent of wavelet. A simulated mixed seismic source wave field and a mixedaccompanying wave field are obtained through a seismic source coding technology; the obtained mixed seismic source wave field and the mixed accompanying wave field are split into a single wave field,so that the gradient of a target function can be calculated by utilizing the split single wave field; crosstalk noise is avoided; meanwhile, the wavelet is subjected to inversion, so that the influence of inaccurate wavelet estimation on a multi-seismic source inversion result is reduced.
Description
technical field [0001] The invention relates to the technical field of geophysics, in particular to a crosstalk-free multi-source full-waveform inversion method and device that do not depend on wavelets. Background technique [0002] In the process of full waveform inversion, it is usually necessary to carry out multiple forward modeling simulations to obtain as much simulated data as possible. In order to improve efficiency, multi-source encoding technology is usually used to perform forward modeling on multiple sources at the same time, thereby increasing the speed of forward modeling. However, the use of source coding technology will lead to crosstalk noise, which will lead to wrong convergence of the inversion algorithm, and even fall into the local extremum of the inversion problem. [0003] In addition, due to the existence of crosstalk noise, the conventional wavelet-independent inversion method is difficult to apply to multi-source data, especially when there are wa...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 张庆臣毛伟建
Owner INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI