中国石油大学学报（自然科学版）2018，Vol.42Issue(2)：50-59,10.DOI:10.3969/j.issn.1673-5005.2018.02.006
基于频率-波数滤波的联合多尺度全波形反演方法及其实现策略
A hybrid multi-scale full waveform inversion method based on frequency-wavenumber filter and its implementation strategies
摘要
Abstract
Multi-scale inversion proceeding sequentially from low frequency data to high frequency data is an efficient strategy to improve the stability of full waveform inversion(FWI). However the performance of multi-scale FWI strongly relies on the quality of low frequency data. In real case,limited by the data acquisition and quality, the inversion result of conventional multi-scale VWI is usually not accurate enough due to the low quality of or sometimes missing low frequency data. In order to improve the inversion stability of FWI when the low frequency data is not available,we propose a multi-scale inversion meth-od based on the relationship between the wavenumber recovered by FWI and the scatter angle. By inverting for the low wave-number component using the wide scatter angle component rather than the low frequency data,the proposed method is capa-ble of mitigating the dependence of FWI on low frequency data. The hybrid multi-scale inversion strategyis suggested based on the frequency-wavenumber filter. The synthetic data test on SEG/EAGE overthrust model verifies that the proposed meth-od not only can recover the low wavenumber component which cannot be inverted by the conventional multi-scale FWI, but also is capable of avoiding the cycle-skipping issues.The new method can invert for the model successfully without the low frequency data,which significantly outperforms the conventional method.关键词
多尺度全波形反演/Poynting矢量/频率-波数滤波/地震数据Key words
multi-scale full waveform inversion/Poynting vector/frequency-wavenumber filter/seismic data分类
天文与地球科学引用本文复制引用
黄建平,崔超,刘梦丽..基于频率-波数滤波的联合多尺度全波形反演方法及其实现策略[J].中国石油大学学报（自然科学版）,2018,42(2):50-59,10.基金项目
山东省重大创新工程项目(2017CXGC1608,2017CXGC1602) （2017CXGC1608,2017CXGC1602）
中国科学院战略性先导科技专项(XDA14010303) （XDA14010303）
国际合作重点项目(41720104006) （41720104006）
国家油气重大专项(2016ZX05006-004,2016ZX05014001,2016ZX05002) （2016ZX05006-004,2016ZX05014001,2016ZX05002）
