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Target-oriented waveform inversion based on Marchenko redatumed data
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DOI：10.1190/GEO2021-0669.1.png)
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摘要
En 中文
Target-oriented inversion (TOI) can resolve subsurface reservoir parameters based on surface waveform data. More-over, virtual data at the datum level and a precise local for-ward operator are required to accurately perform inversion in the target area. The Marchenko redatuming, a state-of-the-art seismic redatuming method, is used to obtain the virtual data of the target area. Local forward operators of crosscor-relation and cross-convolution forms are used to generate the local wavefields. A subsurface-domain interferometric ob-jective function and the corresponding inversion algorithm are developed. A simple model is used to demonstrate the accuracy of this approach. This technique is applied to the Chevron 2014 benchmark data set to invert a specific area, indicating that the method can achieve accurate high-resolution inversion results with reduced computa-tional costs. Finally, a time-lapse inversion is performed to exhibit the practicality of the new approach in 4D seismic exploration. These numerical results demonstrate great ap-plications of the TOI based on the redatumed data and local forward operators of crosscorrelation or convolution forms.
Keyword:
MULTIDIMENSIONAL DECONVOLUTION
CROSS-CORRELATION
GREENS-FUNCTION
DOMAIN
FIELD
期刊
IF:
3.2
论文数:
8.4K
被引数:
3.3W
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