叠前深度偏移

裂步Hartley变换叠前深度偏移

Split - step Hartley transform prestack depth migration

在波动方程基准面校正的基础上，波动方程叠前深度偏移的精度明显高于Kirchhoff偏移法的精度；

On the basis of wave equation datuming correction , the precision of wave equation prestack depth migration is distinctively higher than that of Kirchhoff migration ;

三维Born近似波动方程炮域叠前深度偏移

Wave equation pre-stack depth migration with 3D Born approximation in shot gathers

基于拟线性Born近似的叠前深度偏移方法

Prestack depth migration method based on quasi-linear Born approximation

本文根据共偏移距道集数据的具体物理特性，采用Green函数法实现共偏移距道集数据的波动方程叠前深度偏移。

Based on the special physical character of common-offset gathers , the paper carries out the wave equation prestack depth migration on common-offset gathers by Green function method .

混合法VSP共炮记录叠前深度偏移

VSP common shot pre - stack depth migration with hybrid method

为了提高算法的稳定性，提出了基于最优Born近似的叠前深度偏移方法。

In order to improve the stability of the algorithm , a prestack depth migration method based on the optimized Born approximation was proposed .

三维VSP资料波动方程叠前深度偏移研究

Wave equation of prestack depth migration of 3-D VSP data

波动方程保幅叠前深度偏移与AVO响应

Wave equation preserved-amplitude prestack depth migration and AVO response

旋转变换和viterbi算法在波动方程叠前深度偏移预处理中的应用

Application of Rotation Transform and Viterbi Algorithm in Prestack Depth Migration Preprocessing of Wave Equation

包括了叠前深度偏移、正演模拟、CFP偏移、和CRS叠加。

It includes Pre-SDM , forward-modeling , CFP migration and CRS stack .

本文针对基于波动方程的优化参数分裂步Fourier叠前深度偏移方法进行了较深入的理论分析和理论模型试算研究。

In this paper , more in-depth theoretical analysis and the study of theoretical model have been done for wave equation depth migration with optimum split-step Fourier method .

介绍了利用克希霍夫叠前深度偏移进行CRP速度扫描求取γ道集的快速方法。

This paper introduces a high efficient algorithm for γ gathers computing by means of Kirchhoff prestack depth migration to do CRP velocity scan .

P-P波及P-SV波叠前深度偏移速度模型建立方法

A method of creating P-P and P-SV wave prestack depth migration velocity model

三维共反射点（CRP）道集百分比扫描技术，是一种基于剥层法的叠前深度偏移速度分析方法。

The percentage scanning technique of 3 D CRP ( Common Reflection Point ) gathers is a velocity analysis method of prestack depth migration based on layer stripping .

Sirius叠前深度偏移在莺歌海盆地泥拱模糊带处理中的应用

Application of Sirius pre-stack depth migration in the processing of " mud diapir fuzzy reflection zone " in Yinggehai Basin

基于沉降观测概念的DSR方程叠前深度偏移已经成为了一类重要的地震波成像方法。

According to the concept of Settling Observation , the DSR equation prestack depth migration has become an important seismic imaging method .

实际应用表明，优化参数分裂步Fourier叠前深度偏移是解决横向速度剧烈变化情况下复杂构造成像的一种有效的成像方法。

According to the actual practice it is shows that wave equation depth migration with optimum split-step Fourier is an effective way to solve the problem of complex geology imaging when the lateral velocity changes strongly .

文章提出的混合波场延拓法VSP共炮记录单程波动方程叠前深度偏移，就是一种VSP对复杂构造精确成像的方法。

In order to accurately image complex subsurface structures , one-way-wave-equation-based hybrid wave field extrapolation method is used to perform VSP common shot pre-stack depth migration .

根据Fourier变换与Hartley变换的内在关系，具体推导了裂步Hartley变换（SSH）的叠前深度偏移公式。

The split-step Hartley ( SSH ) transform formulae for prestack depth migration are derived in detail based on the inherent relationships between Fourier transform and Hartley transform .

依据GS法，考虑到效率、效果和稳定性，提出了基于Born/Rytov近似的联合叠前深度偏移方法。

In accordance with GS and taking into account the efficiency , accuracy , and stability , we put forward a prestack depth migration method based on Born / Rytov approximations .

地震波旅行时计算是Kirchhoff积分法叠前深度偏移成像的核心内容，其精度决定着最终偏移成像的效率和效果；

The computation of seismic travel time is a core matter of prestack depth migration using Kirchhoff integration , and its accuracy decides the efficiency and effect of final migration .

目前，该技术主要应用于：（1）CFP两步聚焦法偏移；（2）叠前深度偏移速度模型的建立；

Application of CFP method includes : ( 1 ) CFP migration , ( 2 ) Building velocity depth model for pre stack depth migration ;

叠前深度偏移是目前理论最先进、精度最高的地震波成像技术，它主要包括Kirchhoff积分法和波场外推法（也称波动方程法）。

Prestack depth migration is by now one of the most advanced and accurate seismic imaging technology , which mainly includes Kirchhoff integral method and wave-field continuation method ( wave equation method ) .

共聚焦点（CFP）偏移是基于等时原理，通过激发聚焦和检波聚焦的双聚焦实现叠前深度偏移的地震成像方法。

Common focus point ( CFP ) migration based on the equal travel-time principle is a kind of pre-stack depth migration method through focusing in both emission and detection .

本文介绍了基于广角隐式有限差分单程波传播算子的起伏地表叠前深度偏移方法，并对SEG山前带推覆构造模型进行了检验。

The paper introduced the prestack depth migration from relief surface based on implicit wide-angle finite-difference one-way propagation operator and used SEG piedmont nappe structure model for test .

考虑到计算效率、精度和稳定性，我们采用了SSF和FFD法叠前深度偏移、高阶差分正演模拟、CFP偏移、和CRS叠加。

Taking computing efficiency , precision and stability into consideration , we used Pre-SDM of SSF and FFD , forward-modeling of high-order FD , CFP migration and CRS stack method .

数值试验表明，共方位角偏移等DSR方程叠前深度偏移方法在盐体或礁体、古潜山等强横向变速地区具有很好的应用前景。

The numerical tests show that , DSR equation migration methods such as common azimuth migration have a promising prospect in areas with strong variations of velocity , e.g. , subsalt , reef and buried hill , etc.

三维SEGEAGE盐丘模型的理论走时计算和积分法叠前深度偏移的实践都验证了本文方法的正确性。

Some numerical examples and pre-stack depth migration results on SEG / EAGE salt-dome model demonstrate that this travel time calculation method is very suitable for imaging of complex geological structures .

基于该系统设计的三维波动方程叠前深度偏移（炮域）PSDM软件，采用动态负载平衡并行计算模式，具有较高的计算效率，高度的可扩展性和可靠性。

We use advanced dynamic load balance parallel mode which has very high computing efficiency , expansibility and reliability in the computing .