| 三维不规则地震数据重建方法 |
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| 引用本文： | 高建军,陈小宏,李景叶. 三维不规则地震数据重建方法[J]. 石油地球物理勘探, 2011, 0(1) |
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| 作者姓名： | 高建军 陈小宏 李景叶 |
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| 作者单位： | 中国石油大学(北京)油气资源国家重点实验室;中国石油大学(北京)CNPC物探重点实验室;中国石油大学(北京)石油天然气成藏机理教育部重点实验室; |
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| 基金项目： | 国家高技术研究发展计划(863)(No.2006AA09A102-09); 国家重点基础研究发展计划(973)(No.2007CB209606); 油气资源与探测国家重点实验室课题(No.PRPDX200807)联合资助 |
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| 摘 要： | 不规则采样地震数据会对多道处理技术产生不良影响,降低地震资料的处理质量。本文针对有限带宽三维不规则地震数据,将二维空间非均匀Fourier变换理论和贝叶斯参数反演方法相结合,进行反演重建。首先,采用分频重建策略,对每一个时间频率依据最小视速度确定出待重建数据的空间频率带宽,从不规则地震数据中估计出重建数据的空间Fourier谱。然后,将不规则地震数据重建视为谱重建的地球物理反演问题,运用贝叶斯参数反演理论估计出空间Fourier谱。在反演求解时,采用Delaunay三角网格剖分方法来确定不规则采样点的权值。此外,为避免复数矩阵求逆,使用预条件共轭梯度算法来保证求解的稳定性和收敛速度。理论模型和实际资料处理结果验证了本文方法的有效性和实用性。
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| 关 键 词： | 不规则地震数据 非均匀傅里叶变换 地震数据重建 贝叶斯反演 |
The reconstruction method for irregular seismic data |
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| Gao Jian-jun,,Chen Xiao-hong, Li Jing-ye,.State Key Lab of Oil,gas Resource,China University of Petroleum,Beijing City,,China.CNPC Key Lab of Geophysics,China.Ministry of Education Key Lab of Natural Gas Accumulation Mechanism,China. The reconstruction method for irregular seismic data[J]. Oil Geophysical Prospecting, 2011, 0(1) |
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| Authors: | Gao Jian-jun Chen Xiao-hong Li Jing-ye .State Key Lab of Oil&gas Resource China University of Petroleum Beijing City China.CNPC Key Lab of Geophysics China.Ministry of Education Key Lab of Natural Gas Accumulation Mechanism China |
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| Affiliation: | Gao Jian-jun1,2,Chen Xiao-hong1,2 and Li Jing-ye1,31.State Key Lab of Oil&gas Resource,China University of Petroleum,Beijing City,102249,China2.CNPC Key Lab of Geophysics,China3.Ministry of Education Key Lab of Natural Gas Accumulation Mechanism,China |
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| Abstract: | Irregular sampling seismic data could cause problems for multi-channel seismic data processing and also could decrease data processing quality.For 3D irregular seismic data with the limited bandwidth inversion reconstruction was conducted by integration of 2D space non-uniform Fourier transform theory and Bayesian parameter inversion method.At first by using frequency division method and based on minimum apparent velocity for every time frequency the spatial frequency bandwidth was determined for the data w... |
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| Keywords: | irregular seismic data non-uniform Fourier Transform(NUFT) seismic data reconstruction Bayesian inversion |
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