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- High dip finite difference depth migration. 大倾角有限差分深度偏移
- Velocity model building for prestack depth migration is a model based iteration process. 摘要叠前深度偏移速度建模是一种基于模型的迭代修正过程。
- The same computational code was also used to reconstruct the reverse time image. 相同的计算机程式并用以推求空间逆时影像。
- The characteristics of Archaeozoic melamorphic reservoirs in Niuxintuo area have been studied through data of coring, 3700 logging and 3D seismic prestack depth migration. 综合运用钻井取心、3700测井、三维地震叠前深度偏移等资料,对牛心坨地区太古界变质岩储层特征进行了研究。
- Considering that Chinese has the largest number of speakers in the worldthe greatest time depth in its literature, this interest is long overdue. 对于这门拥有世界上使用人数最多、文学历史最悠久的语言，这股学习热潮早该出现了。
- In this paper, forward modeling technique is applied to pre-stack depth migration to accurately image the front overthrust nappe struct. 文章将地震资料模型正演技术应用到叠前深度偏移,探讨了一种有助于川西龙门山前缘逆掩推覆构造地震资料精确成像技术。
- For the high order generalized screen propagator prestack depth migration, the more the order is the better the result we get. 基于波场逐步累加的"直接下延"法是解决复杂地表和地质条件下叠前深度偏移成像的有效手段。
- The trans-formation is based on the principle that the same seismic horizon has constant depthin SV-wave section and P-wave section (time depth is not involved). 此法基于SV波与P波剖面对某一反射层具有等深度（而不是时深）的原理。
- The 3-D prestack depth migration principally includes three parts: travetime cal-culation, Kirchhoff summation, and velocity analysis. 利用深度偏移后的道集是否拉平进行速度分析，可以进一步修改速度模型。
- Finally, the finite difference pre-stack depth migration method in f-k domain was adopted to solve the imaging problem of subsalt and salt dome flank. 利用频率-空间域有限差分叠前深度偏移解决了盐下及盐丘侧翼的成像问题。
- Weak reflection and weak conversion makethe elastic wave equations be applicable to the elastic-wave reverse time recursionimage problem where interbed reverberation must be suppressed thoroughly. 由于这些方程的弱反射、弱转换特性，使它们特别适用于需要压制层间混响的弹性波道时递推成像一类的工程。
- The interpretation precision of target horizon by using prestack depth migration data is high com pared to real drilling. 利用叠前深度偏移资料解释的目的层层位，与实钻结果差异较小。
- In this study, we applied the reversibility of elastic wave to a discussion of the reverse time propagation of wave equation. 摘要本文应用波动方程式的可逆性讨论弹性波的逆时影像重建。
- Although the wave field based pre-stack depth migration is the most reliable method for complex structure imaging,it has a high computation cost and a poor adaptation to geometry. 基于波场延拓的叠前深度偏移是实现复杂构造地质体成像的可靠方法,但存在着计算量大、对观测系统适应性差等缺点。
- Wave equation-based prestack depth migration technique can accurately describe the wave field in complex media conditions and perform high resolution imaging. 基于波动方程的叠前深度偏移方法能在复杂介质条件下精确描述波场,且能高精度成像。
- Zero-offset reverse time migration for prediction ahead of tunnel face 反射地震零偏移距逆时偏移方法用于隧道超前预报
- Seismic data of depth domain has been applied widely along with the development of new geophysical technologies such as VSP, depth migration, crosswell seismic. 随着VSP、深度偏移、井间地震等物探新技术的出现,深度域地震记录的应用日益增多。
- The migration imaging range is determined according to the structural attitude of 3 D velocity model , and the variable range 3 D prestack depth migration is done on the CSP ... 用三维相移加校正方法在炮集上实现三维叠前深度偏移，并根据三维速度模型构造形态，自动确定偏移后成像孔径进行变范围偏移叠加，提高三维构造形态清晰度。
- It solves out the required multi-valued traveltime and amplitude at the uniform dispersed grids efficiently when applied to 3-D prestack depth migration. 本文算法应用于三维叠前深度偏移处理流程时，可高效地获得均匀网格点上地震波多值走时及振幅的数值计算结果。
- Based on high order generalized screen propagator, we used the method of "wave field downward continuation" to realize prestack depth migration from irregular topography. 基于高阶广义屏算子，应用直接下延法，实现了起伏地表条件下的高阶广义屏算子深度偏移。
