发明名称 |
Amplitude-invertering av tilbakeböyd bölge |
摘要 |
A method for compensating for amplitude loss in a set of seismic traces, where the amplitude loss is caused by shallow attenuation anomalies. Attenuation factors are calculated from first-arrival amplitudes for long-offset seismic data traces. Those factors are calculated by numerical methods, using matrix inversion and iteration. Those factors are used to adjust upward the amplitudes of all later-arriving seismic traces. Frequency dependent attenuation is treated by dividing the seismic traces into frequency ranges using band-pass filters, then using the above-described method within each frequency range after which the adjusted amplitudes are recombined. Amplitude variations caused by inconsistencies in the data acquisition system, such as a source strength variation, are also treated by a similar approach. |
申请公布号 |
NO20023979(D0) |
申请公布日期 |
2002.08.21 |
申请号 |
NO20020003979 |
申请日期 |
2002.08.21 |
申请人 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
KIM, YOUNG C;ROMERO JR, ARTURO E;DEAL, MICHAEL M |
分类号 |
G01V1/28;(IPC1-7):G01V |
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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