SEISMIC DATA PROCESSING TECHNOLOGY IN FUZZY REGION
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摘要: 在详细分析了底辟模糊区地震资料特点的基础上,针对崎岖海底绕射多次波干扰、浅部气层吸收造成的高频成分缺失、复杂断裂结构造成的成像效果差等问题,提出了一项有效的数据资料处理对策。通过采用信号高保真、压制多次波、提高信噪比的优势信号、高精度地震速度建模以及各向异性叠前深度偏移等关键处理技术,极大地提高了底辟模糊区地震资料的信噪比,压制了多成因多特点的多次波干扰,地震剖面的成像质量得到显著提高。Abstract: Based on the detailed analysis of the characteristics of seismic data in the diapir fuzzy region, an effective data processing strategy has been developed in order to solve the problems, such as the multiple wave interference from a rough seafloor, the absorption of high frequency components caused by shallow gas diffraction, and the poor imaging caused by complex fault structures. By using the signal fidelity technology, combined technology for suppressing multiple waves, signal enhancement technology to improve the SNR, high precision seismic velocity modeling and anisotropic prestack depth migration and other key processing technology, the seismic data in the diapir fuzzy region is greatly improved in signal-to-noise ratio and suppression of multiple wave interference, and therefore greatly improved in the imaging quality of seismic profiles.
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Key words:
- diapir fuzzy region /
- seismic data processing /
- multiple /
- anisotropy /
- pre-stack depth migration
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