Broadband seismic amplitude variation with offset inversion

Broadband seismic amplitude variation with offset inversion
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偏移反演的宽带地震振幅变化

DOI:
10.1190/geo2016-0306.1
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发表时间:
2017-03
期刊:
影响因子:
3.3
通讯作者:
Zhang Weiwei
Zhang Weiwei
中科院分区:
地球科学2区
文献类型:
--
作者:
Zong Zhaoyun;Li Kun;Yin Xingyao;Zhu Ming;Du Jiayuan;Chen Weitao;Zhang Weiwei

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地震振幅随炮检距变化(AVO)是目前公认的预测地学弹性参数的实用工具。常规地震资料遗漏的低频通常是从其他地球物理信息(如测井数据)中恢复的,用于估计绝对岩性,这导致在复杂的非均质地质目标或稀疏测井数据的情况下,如海相或深层,导致有偏的反演结果。宽带地震数据为在没有测井资料的情况下估计弹性参数的低频分量带来了新的机会。针对宽带地震资料,提出了一种基于贝叶斯推理的AVO反演方法。由于复频域的地震反演是有效的,因此本文提出的基于贝叶斯推理的宽带AVO复频域反演方法可以初步估计出弹性参数的低频分量。
ABSTRACTSeismic amplitude variation with offset (AVO) inversion is well-known as a popular and pragmatic tool used for the prediction of elastic parameters in the geosciences. Low frequencies missing from conventional seismic data are conventionally recovered from other geophysical information, such as well-log data, for estimating the absolute rock properties, which results in biased inversion results in cases of complex heterogeneous geologic targets or plays with sparse well-log data, such as marine or deep stratum. Broadband seismic data bring new opportunities to estimate the low-frequency components of the elastic parameters without well-log data. We have developed a novel AVO inversion approach with the Bayesian inference for broadband seismic data. The low-frequency components of the elastic parameters are initially estimated with the proposed broadband AVO inversion approach with the Bayesian inference in the complex frequency domain because seismic inversion in the complex frequency domain is he...
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