叠前深度偏移是转换波最佳成像方法。
Prestack depth migration is an optimal imaging method for PSV wave.
叠前逆时偏移需要计算成像点的初至时间。
Prestack reverse time migration requires computing the first breaks time of imaging points.
强调了叠前处理信噪比与分辨率关系的重要性。
It is stressed that the relationship between prestack processing S/N and resolution is important.
目前的研究前沿主要集中在叠前深度域和弹性波。
The leading research foreland mainly focuses on pre-stack depth domain and elastic wave.
叠前深度偏移是人们解决复杂条件下勘探的重要方法。
Pre-stack depth migration is an important method used to explore complex area.
如何高质量、快速完成叠前时间偏移是一个非常困难的课题。
Therefore, this paper introduces a method of prestack time migration in dealing with such a mass of data.
波动方程叠前深度偏移技术是复杂地表地震资料成像的有效方法。
Wave equation prestack depth migration technique is an effective method of seismic data imaginating in complicated surfaces.
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。
Therefore, the wave equation pre-stack depth migration, a method starting directly from the rolling surface, is discussed.
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。
Based on plane wave decomposition, We propose a wave-equation depth migration method for pre-stack seismic data.
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。
For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.
因所用资料是叠前资料，所以该方法考虑了直达波、折射波和多次波能量。
The used seismic data are prestack data:therefore, this method considers the energies of direct wave, refraction wave and multiple wave.
数值模拟结果证明，该方法正确有效，有利于后续的常规处理和叠前成像。
Numerical experiment results indicate that the method is correct and efficient, and is good for the subsequent seismic data processing.
介绍一种能够适应介质速度横向变化的非稳态相移算子及其叠前深度偏移方法。
The paper introduces a prestack depth migration by nonstationary phase shift method suitable for laterally variable velocity.
三维地震及其叠前深度偏移技术及软件系统的研究、开发和应用取得显著成效。
Remarkable achievements were obtained in the research, development and application of three dimensional seismic exploration and its depth migration before stack technique as well as software system.
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。
Pre-stack depth migration technique can be realized either in shotpoint receiver domain or in CMP offs et domain.
利用单程波动方程炮道集叠前深度偏移方法，建立了相关叠前深度偏移处理流程；
The One-Way Wave Equation Prestack Depth Imagimg operators in the hybrid domain are developed into the software and the processing sequence is built.
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。
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.
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。
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.
叠前深度偏移技术是解决复杂构造和速度横向变化剧烈地区的地震资料成像问题的理想技术。
Prestack depth migration is an ideal technique for seismic data imaging in the regions with complex structural conditions and severely changeable lateral velocities.
结果表明：起伏地表波动方程叠前深度偏移照明加权成像结果与理论模型构造形态非常吻合。
The result showed that the illuminated weighting imaging results by wave equation prestack depth migration from relief surface very coincide with the structural configuration of model.
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。
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.
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。
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.
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。
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.
由于无需对不同百分比速度模型重复计算旅行时，多次叠前时间偏移所耗费CPU时间并不多。
The consumed CPU time of the multiple migration is not too much, because multiple travel-time calculations for the different percentages of the velocity model are unnecessary.
叠前时间偏移是一项理论与经验紧密结合的应用技术，处理过程中每一环节均会对成像产生影响。
Prestack time migration processing is an application technology of combination of theory and experience. Each stage will have an impact on migration imaging.
叠前深度偏移是复杂地质体成像的有力工具，其成像的质量主要取决于所用速度-深度模型的精度。
Prestack depth migration is an effective tool for complex geologic body imaging. The quality of its image depends mainly on the accuracy of velocity-depth model.
实际钻井结果证明，在研究区采用基于叠前弹性阻抗反演的LMR技术能够有效地识别含水与含气储层。
Actual drilling information shows that LMR technology based on elastic impedance inversion can effectively identify water and gas layers.
实际钻井结果证明，在研究区采用基于叠前弹性阻抗反演的LMR技术能够有效地识别含水与含气储层。
Actual drilling information shows that LMR technology based on elastic impedance inversion can effectively identify water and gas layers.
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