论文详情
基于矢量波动理论的多波地震技术在解决各向异性地层的精确勘探方面具有理论基础优势,纵、横波深度域成像是多波地震资料处理的关键之一,多分量联合逆时偏移是实现纵、横波深度域成像的重要方法之一。总结了横向各向同性(TI)介质中弹性波逆时偏移技术的研究现状,重点分析了弹性波延拓和纵、横波成像中各个环节的实现思路与存在的主要问题,在此基础上探讨了该领域未来的研究方向。TI介质中弹性波方程逆时偏移领域重点技术主要包括:三分量地震数据之间的频谱一致性处理技术、各向异性随机边界构建技术、各向异性逆时偏移的噪声压制技术、数据驱动的TI介质中的纵、横波解耦技术、更准确的纵、横波传播方向求取技术和横波三叉区的处理与成像技术等。
The multi-component seismic exploration technology based on vector wave theory has inherent advantages in the accurate characterization of anisotropic strata.The imaging of P-waves and S-waves in the depth domain is the key to multi-component seismic data processing,and multi-component reverse-time migration is an important method to realize such imaging.In this paper,the implementation methods and outstanding issues of the existing technology were analyzed,and the directions of future research were discussed.In particular,research on the elastic wave reverse time migration of transversely isotropic media should be devoted to establishing a method for ensuring the spectral consistency across the three components of the data.Furthermore,techniques for constructing anisotropic random boundaries and suppressing the elastic reverse time migration noise should be developed.In transversely isotropic media,a data-driven technique for decoupling P-waves and S-waves is required,and so is a method for calculating the direction of propagation of these waves.Finally,techniques for processing and imaging the shear wave trigeminal region need to be developed.
基金项目：国家重点研发计划(2018YFC1405900)、中央高校基本科研业务费专项(201822011)、国家自然科学基金(41674118)和国家重大科技专项(2016ZX05027-002)共同资助。