摘要
共反射面元(Common Reflection Surface=CRS)叠加是一种特殊的零偏移距成像方法,实践中它具有独立于宏观速度模型和完全数据驱动实现的鲜明特色,CRS叠加理论认为在得到高质量的零偏移距剖面的同时,还可以得到三个有用的波场属性参数剖面反演宏观速度模型,CRS叠加剖面之后的叠后深度偏移质量将超过叠前深度偏移.虽然CRS叠加倡导的成像方式和承诺的上述理想境界带来了全新的启示,但是实践中这些特色同样带来了令人困扰的问题,为此我们提出了倾角分解CRS叠加方法解决这些问题.本文即是作者通过上述实践之后对CRS叠加方法形成的一些思考和总结.
Common Reflection Surface (CRS) stack is a special zero-offset imaging method. It is independent of macro-velocity model and full data-driven realization in practice. According to CRS stack theory, not only the high-quality zero-offset section is obtained, also the three useful wavefield attributes are computed to invert macro velocity model, the ideality post-stack depth migration after CRS stack will outperforms pre-stack depth migration. The above features is inspiring, but they cause problems in practice. The dip decomposing CRS stack was proposed to deal with these problems. In this paper, some thoughts are summarized after practicing the CRS imaging method.
出处
《地球物理学进展》
CSCD
北大核心
2005年第1期12-16,共5页
Progress in Geophysics
