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| Keywords | |
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quality factor (Q) inversion |
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L- BFGS method |
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visco- acoustic equation |
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full waveform inversion |
| Authors | |
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SUN Hui-Qiu |
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HAN Li-Guo |
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XU Yang-Yang |
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GAO Han |
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ZHOU Yan |
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ZHANG Pan |
| PubMed | |
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Article by Sun, H. Q. |
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Article by Han, L. G. |
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Article by Xu, Y. Y. |
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Article by Gao, H. |
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Article by Zhou, Y. |
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Article by Zhang, P. |
Method of Q through full waveform inversion based on L- BFGS algorithm
SUN Hui-Qiu, HAN Li-Guo, XU Yang-Yang, GAO Han, ZHOU Yan, ZHANG Pan
College of Geo- exploration Science and Technology��Jilin University��Changchun 130026��China
Estimating the stratigraphic quality factor Q is important for the description of tectonic distribution and the prediction of oil and gas�� Considering the viscous property of the medium when the wave propagation is modeled��2D visco- acoustic equation is used to full waveform inversion�� The observed wave field and the other wave field obtained by forward modeling construct an objective function��and L- - BFGS algorithm is used to inverse seismic quality factor�� To test the efficiency of this method (L- BFGS) in FWI��an abnormal model and a Marm- ousi model are examined from surface seismic data�� The results show that the inversion model is closer to the theori- cal model��high in the computational accuracy and good in inversion effect��