Improving computation efficiency of full waveform inversion based on multi-step preferred optimization in multi-source domain

被引：2
|
作者：
Guo Y. [1 ,2 ]
Huang J. [1 ,2 ]
Li Q. [1 ,3 ]
Li Z. [1 ,2 ]
Cui C. [1 ,2 ]
机构：
[1] School of Geosciences in China University of Petroleum (East China), Qingdao
[2] Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao
[3] Geophysical Exploration Research Institute of Zhongyuan Oilfield Company, SINOPEC, Puyang
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2019年 / 43卷 / 02期
关键词：
Full waveform inversion; Multi-source modeling; Parabolic fitting; Step optimization;
D O I：
10.3969/j.issn.1673-5005.2019.02.005
中图分类号：
学科分类号：
摘要：
Full waveform inversion(FWI) needs large amount of calculation, which is one of the key constraints for production. The calculation of step length with parabolic interpolation method requires at least two addition forward simulations, which directly influences the efficiency of the inversion. In order to improve the efficiency of step-size calculation, this paper combines amulti-source modeling into the step-length calculation. Combining parallel computing and adaptive algorithm, multiple steps can be calculated simultaneously, which then leads to a new acoustic full waveform inversion of multi-step preferred optimization based on multi-source. Applying the new method into Zhongyuan model and Marmousi model, we can draw the conclusions that, firstly, the new method has basically achieved the same inversion precision; and secondly, the computational efficiency has increased by 43.75% and 44.32% for the two models, respectively. © 2019, Periodical Office of China University of Petroleum. All right reserved.
引用
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页码：45 / 52
页数：7
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