Passive seismic imaging using data to data migration and angle domain filtering

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 by noise.