TI介质中与自由界面有关多次波的产生和衰减

This project systematically tracked and partially developed the theory and technology of wave-equation-based multiple attenuation. On the base of the theory and method, the mathematic model of modeling and inversion was designed, and the corresponding software was also developed. Comparing with conventional methods, Synthetic and real marine seismic data demonstrated its better effect and stronger applicability. By the way, the shortcomings and developing direction of current methods was also known.. The research achievements are domestically original. This project implemented the surface-related multiple attenuation on pre-stack multi-shot gathers and post-stack trace, and it also developed the multi-channel Wiener filter for adaptive filtering. The researches totally fostered five high class graduate students, published two compositions and ten science papers. The continuing research content and method are designed on current achievements..

本项目将从各向异性介质地震波动方程出发，研究与自由界面有关的一次和多次波，构造多次波场贡献的马尔可夫链，分析介质各向异性在一次和多次波场上的运动学与动力学影响；采用非线性方法反演多次波，进而衰减多次波，提高地震资料的信噪比、分辨率、保真度及其后续处理与解释的可靠性，对海上裂缝和底劈区油气勘探和开发有重要意义。.