辽河盆地深层地震资料处理技术
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摘要
针对辽河盆地深层地震资料反射不清，信噪比及偏移成像精度低的情况，采用振幅补偿、叠前去噪、剩余静校 正、多次波压制及叠后去噪等技术提高信噪比；采用ＤＭＯ、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。使 信噪比及偏移成像精度均有明显提高，极大地提高了深层地震资料的质量。
The deep seismic data from Liaohe basin assumed indistinct reflectance signature and poor accuracy of signal/noise ratio and migrated imaging. For improving signal/noise ratio, such techniques are applied as amplitude compensation, pre-stack noise removal, residual static correction, multiple rejection and post-stack noise removal. For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used. By means of these processing techniques, both signal/signal ratio and migrated imaging accuracy have been obviously enhanced, this making the quality of deep seismic data improved greatly.
The deep seismic data from Liaohe basin assumed indistinct reflectance signature and poor accuracy of signal/noise ratio and migrated imaging. For improving signal/noise ratio, such techniques are applied as amplitude compensation, pre-stack noise removal, residual static correction, multiple rejection and post-stack noise removal. For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used. By means of these processing techniques, both signal/signal ratio and migrated imaging accuracy have been obviously enhanced, this making the quality of deep seismic data improved greatly.
引文
[1]渥·伊尔马滋.地震数据处理(黄绪德,袁明得,等译)[M].北京:石油工业出版社,1994.
[2]何樵登.地震勘探原理和方法[M].北京:地质出版社,1985
[2]何樵登.地震勘探原理和方法[M].北京:地质出版社,1985
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