发明名称 |
Fast viscoacoustic and viscoelastic full-wavefield inversion |
摘要 |
A method, including: obtaining an initial geophysical model; modeling a forward wavefield with viscoacoustic or viscoelastic wave equations; modeling an adjoint wavefield with adjoint viscoacoustic or adjoint viscoelastic wave equations, wherein the adjoint viscoacoustic wave equations are based on an auxiliary variable that is a function of both pressure and a memory variable or the adjoint viscoelastic wave equations are based on a combination of stress and a memory variable, respectively; obtaining a gradient of a cost function based on a combination of a model of the forward wavefield and a model of the adjoint wavefield; and using the gradient of the cost function to update the initial geophysical model and obtain an updated geophysical model. |
申请公布号 |
AU2015280633(A1) |
申请公布日期 |
2016.12.22 |
申请号 |
AU20150280633 |
申请日期 |
2015.04.22 |
申请人 |
ExxonMobil Upstream Research Company |
发明人 |
Denli, Huseyin;Kanevsky, Alex |
分类号 |
G01V1/28 |
主分类号 |
G01V1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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