One-way wave equation seismic prestack forward modeling with irregular surfaces  

作　　者：Xiong Xiaojun He Zhenhua Huang Deji 

机构地区：[1]State Key Lab. of Oil and Gas Reservoir Geology and Exploration, Chengdu Universi＇ty of Technology, Chengdu 610059,China.

出　　处：《Applied Geophysics》2006年第1期13-17,共5页应用地球物理（英文版）

基　　金：This work was funded by National Natural Science Foundation of China （No. 40474044）.

摘　　要：Mathematical geophone （MG） and equal-time stacking （ETS） principles are used to implement seismic prestack forward modeling with irregular surfaces using the oneway acoustic wave-equation. This method receives seismic primary reflections from the subsurface using a set of virtual MGs. The receivers can be located anywhere on an irregular observing surface. Moreover, the ETS method utilizes the one-way acoustic wave equation to easily and quickly image and extrapolate seismic reflection data. The method is illustrated using high single-noise ratio common shot gathers computed by numerical forward modeling of two simple models, one with a flat surface and one with an irregular surface, and a complex normal fault model. A prestack depth migration method for irregular surface topography was used to reoroduce the normal fault model with high accuracy.数学地震检波器(MG )(et ) 并且相等时间的叠原则被用来实现向前用单程的声学的波浪方程与不规则的表面当模特儿的地震 prestack。这个方法从表面下的使用受到地震主要思考一套虚拟 MG。接收装置能位于在任何地方不规则的观察表面。而且， ETS 方法利用单程的声学的波浪方程到容易并且快速想象并且外推地震思考数据。方法用普通射击集合由二个简单模型，的数字前面的建模计算了的高单个噪音的比率被说明有扁平的表面的和有不规则的表面的，和复杂正常指责模型。为不规则的表面地形学的一个 prestack 深度迁居方法被用来与高精确性复制正常差错模型。

关 键 词：mathematical geophone equal-time stacking principle seismic prestack forward modeling irregular surfaces and one-way wave-equation. 

分 类 号：P631.4[天文地球—地质矿产勘探]