摘要
地震波传播速度是地震数据处理中最基础、最重要的参数之一。在地表及地下地质构造复杂地区,计算效率、提高速度分析精度和消除浅层速度异常影响等是偏移速度分析方法研究的关键。介绍了叠前爆炸反射面模拟偏移速度分析方法、相似谱判断标准非线性反演的全波动方程速度模型建立、基于射线理论关系速度模型的时深转转以及消除浅层速度异常体影响等几种新方法技术的方法原理及应用效果,并分析了各自的特点。
Seismic-wave propagation velocity is one of the most important and basic parameters in seismic data processing.In areas of complex surface and subsurface,improving computational efficiency and velocity analysis precision,as well as diminishing the influences of shallow velocity anomaly are the core of development of migration velocity analysis methods.This paper introduces the theory and applications of several newly developed velocity analysis methods: prestack generalization of exploding reflectors modeling,full wave-equation velocity model building based on non-linear inversion under semblance criterion,time-to-depth conversion based on raypath theory,and elimination of the effect of shallow velocity anomaly.
出处
《勘探地球物理进展》
2008年第3期172-177,共6页
Progress in Exploration Geophysics
关键词
速度分析
计算效率
计算精度
浅层速度异常
时深转换
velocity analysis
computational efficiency
computational precision
shallow velocity anomaly
time-to-depth conversion
