Source Independent Velocity Recovery Using Imaginary FWI
Source Independent Velocity Recovery Using Imaginary FWI
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DOI：
10.3997/2214-4609.202112976
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
S. Qin;Y. Yang;R. Wang
中科院分区：
文献类型：
--
作者：
S. Qin;Y. Yang;R. Wang
在主动地震数据下，全波形反转（FWI）已被广泛用于地震速度反演。在被动地震数据下，FWI的使用更具挑战性，因为除了速度，源位置和激活时间也未知。被动地震数据是指在全球地震调查中收集的地震数据以及在非常规储层的液压压裂期间收集的微丝膜数据。前者用于地震检测以及地下成像，后者用于液压压裂中的裂纹监测和危害控制。
Full Waveform Inversion (FWI) has been widely used for seismic velocity inversion under active seismic data. The usage of FWI under passive seismic data is much more challenging, since aside from the velocity, the source location and activation time are also unknown. Passive seismic data refers to earthquake data collected in global seismic survey and microseismic data collected during hydraulic fracturing of unconventional reservoirs. The former is used for earthquake detection as well as subsurface imaging, and the latter is used for crack monitoring and hazard control in hydraulic fracturing.