基于模型数据的共反射面元叠加初步实践

Preliminary Practice of Common Reflection Surface Stack Based upon Simulating Data

共反射面元 (commonreflectionsurface ,CRS)叠加是一种不依赖于宏观速度模型的零炮检距剖面成像方法 .共反射面元的旅行时响应由三个波场属性参数确定 ,相比常规共中心点 (commonmiddlepoin ,CMP)叠加和倾角时差校正 (dipmoveout,DMO)叠加 ,CRS叠加算子能够将地下反射点附近一个邻域内的能量进行聚焦并实现同相叠加 ,因此能得到更好的零炮检距剖面 .

Common reflection surface(CRS) stack is a macro-model independent seismic imaging method.To perform CRS stack depends on the determination of three wave attributes,compared with conventional common middle point(CMP) stack and dip move out(DMO) stack,CRS stack can focus more energy in the vicinity of the reflector,therefore can obtain a better zero offset section by stacking events with same phase.Numerical tests on the simulating data proved this point.