Passive Seismic Imaging Using Data to Data Migration and Angle Domain Filtering
Passive Seismic Imaging Using Data to Data Migration and Angle Domain Filtering
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DOI：
10.1190/segam2015-5899461.1
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
Yikang Zheng;Yibo Wang;Shaojiang Wu;X. Chang;Z. Yao
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文献类型：
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作者：
Yikang Zheng;Yibo Wang;Shaojiang Wu;X. Chang;Z. Yao
综上所述，水力压裂过程中产生的微地震数据本质上是四维时移数据。利用这些数据的成像结果可以为我们提供地下变化的重要信息。在这里，我们展示了在被动地震成像中利用数据进行数据偏移的方法。在自由面记录的数据被正向传播，相同的数据被反向传播。这种方法不需要源信息。为了抑制噪声和提高偏移结果的分辨率，我们在角域公共图像道集(ADCIGs)中应用了抛物线Radon变换。合成算例表明，即使在受到干扰的情况下，我们的偏移方法也能提供相当清晰的地下图像
Summary The microseismic data generated during hydraulic fracturing process is essentially 4D time-lapse data. The imaging result using such data can provide us the important information of subsurface changes. Here we demonstrate the utilization of data to data migration in the passive seismic imaging. The data recorded at free surface are forward propagated and the same data are back propagated. Source information is not needed in this approach. To suppress the noise and improve the resolution in the migration result, we apply parabolic Radon transform in angle domain common image gathers (ADCIGs). The synthetic example shows our migration method can provide pretty clear subsurface image, even for the data interfered