发明名称 |
DETECTING AND ESTIMATING ANISOTROPY ERRORS USING FULL WAVEFORM INVERSION AND RAY BASED TOMOGRAPHY |
摘要 |
Anisotropy errors in seismic velocity data for a geophysical structure are detecting by obtaining seismic data for the geophysical structure, using conventional ray-based tomography to generate an initial model of the geophysical structure, the initial model containing initial values for Thomsen parameters velocity along an axis of symmetry, epsilon and delta, using a first inversion process preferably transmission-based full waveform inversion of the seismic data to obtain updated values for epsilon and using a second inversion process preferably ray-based reflection tomography of the seismic data to obtain updated values for velocity along the axis of symmetry. |
申请公布号 |
US2016187512(A1) |
申请公布日期 |
2016.06.30 |
申请号 |
US201514908103 |
申请日期 |
2015.01.13 |
申请人 |
CGG SERVICES SA |
发明人 |
MOTHI Sabaresan;BI Hongbo;CHEN Guang |
分类号 |
G01V1/36;G01V1/30;G01V1/40;G01V1/28 |
主分类号 |
G01V1/36 |
代理机构 |
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代理人 |
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主权项 |
1. A method for detecting and correcting anisotropy errors in seismic velocity data for a geophysical structure, the method comprising:
obtaining seismic data for the geophysical structure; obtaining an initial model of the geophysical structure, the initial model containing initial values for Thomsen parameters velocity along an axis of symmetry, epsilon and delta; using a first inversion process of the seismic data to obtain updated values for epsilon; and using a second inversion process separate from the first inversion process of the seismic data to obtain updated values for velocity along the axis of symmetry. |
地址 |
Massy FR |