Pre-stack depth migration is an important method used to explore complex area.
叠前深度偏移是人们解决复杂条件下勘探的重要方法。
The leading research foreland mainly focuses on pre-stack depth domain and elastic wave.
目前的研究前沿主要集中在叠前深度域和弹性波。
Based on plane wave decomposition, We propose a wave-equation depth migration method for pre-stack seismic data.
提出了一套基于平面波分解的波动方程叠前地震数据深度偏移方法。
The technique of seismic pre-stack depth migration is used to correctly implement the complex structural imaging.
采用地震造前深度偏移技术，使复杂构造正确成像。
Pre-stack depth migration technique can be realized either in shotpoint receiver domain or in CMP offs et domain.
叠前深度偏移技术既可在炮点—接收点域实现，也可在共中心点—炮检距域实现。
Therefore, the wave equation pre-stack depth migration, a method starting directly from the rolling surface, is discussed.
为此，探讨了直接从起伏地表开始的波动方程叠前深度偏移方法。
For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.
采用DMO、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。
This paper has made some searching in Complex structure fine pre-stack processing and pre-stack migration imaging, and has achieved some results.
本文就这两个问题，在复杂构造叠前精细处理、复杂构造叠前偏移成像等方面开展了一些探索，取得了一定的效果。
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.
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。
In recent years, people have developed several migration techniques which don't use common-shot records in order to improve computational efficiency for pre-stack migration.
近些年出现了旨在提高叠前偏移计算效率的多种非共炮记录的偏移方法。
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。
Elastic parameter such as impedance, velocity, Poisson ratio etc. and pre-stack amplitude, frequency attributes can be used to quantitatively predict the fracture density and direction.
利用阻抗、速度、泊松比等弹性参数和叠前振幅、频率属性可对裂缝密度和方位进行定量预测。
As the most physical of the shot-profile wave equation pre-stack depth migration involving huge extrapolation calculation, the calculation is extremely time-consuming and less efficient.
作为最具物理性的共炮点道集的波动方程叠前深度偏移，涉及庞大的波场外推计算量，计算极其耗时，效率较低。
Taking aim at solving the important velocity model problem in wave equation pre-stack depth migration, This paper studies the method and software of building 3d migration velocity model.
针对波动方程叠前深度偏移中重要的速度模型问题，研究了一套三维速度建模方法和软件。
A new method based on well logging data and pre-stack seismic inversion parameters, which is called pore bulk modulus method, is presented to quantitatively calculate pore fluid saturation.
提出了一种基于测井数据和叠前地震反演参数的流体饱和度定量预测方法——孔隙体积模量法。
The feasibility and effective of the multi-radial mid-value filtering have been verified through some model data tests and suppressing the surface wave in the practical pre-stack seismic data.
通过模型资料测试，以及近地表反射地震实例叠前资料面波压制试处理研究工作，验证了多线束径向中值滤波方法的可行性和实用性。
Therefore, the density attribution is used to identify the high-speed mudstone cap rocks by pre-stack inversion techniques, and then explain the distribution of the cap rocks in the density body.
因此，采用叠前反演技术获得的密度属性体来识别高速泥岩盖层，并在密度属性体上解释分析了高速泥岩盖层的分布区域。
CRS stack based on a complex top surface topography can process pre-stack data without static correction. Then data redatuming can be performed with the kinematic parameters produced by CRS stack.
基于复杂地表的CRS叠加不需对叠前数据做静校正，可以利用叠加得到的波场参数剖面实现基准面重建。
Generally, reservoir predicting technologies can be classified as: recurrence inversion, logging restriction inversion and pre-stack inversion, which should be fit to some conditions in application.
地震储集层预测一般分为递推反演、测井约束反演和叠前反演三大类，应用时有条件限制。
Inspiration was drawn from local building traditions, and pre-machined log construction with dovetail corner joints was chosen, which is stack directly on the main glue laminated bearing structure.
灵感来源于周围建筑传统，选择使用机器预加工的榫卯结构，直接堆积在主体承重结构上。
Migration velocity analysis is one of the key steps in pre stack depth migration whose accuracy directly affects the quality of pre stack depth migration.
偏移速度分析是叠前深度偏移的关键步骤之一，它的准确与否直接影响叠前深度偏移的质量。
Pre stack depth migration which starts directly from undulating earth surface turns out to be a valid way to deal with irregular topography and complex geologic structures.
直接从起伏地表开始的叠前深度偏移方法是对付复杂地表和复杂地质构造成像的有效手段。
The precision of stack velocity and interval velocity provided by common NMO correction processing method can't meet the need of predicting the pre-drilling press.
常规动校正处理方法提供的叠加速度及层速度精度不能满足钻前压力预测的需要。
But to layered strata, the seismic wave path is complicated when reservoir changes, and it is difficult to directly define vertical time difference by pre stack far offset seismic data.
对于层状介质，油藏变化前后的地震波传播路经比较复杂，其激发点和接受点发生了变化，要想用叠前远偏移距数据直接计算垂直时差比较困难。
In that case I can do that while uploading and when the document is requested I can just return the pre-encrypted data which will be decrypted by the SSL stack on the client.
在这种情况下，我可以在上传文档时要求我只能返回预加密的数据将在客户端解密ssl协议栈。
In that case I can do that while uploading and when the document is requested I can just return the pre-encrypted data which will be decrypted by the SSL stack on the client.
在这种情况下，我可以在上传文档时要求我只能返回预加密的数据将在客户端解密ssl协议栈。
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