Distributed Acoustic Sensing (DAS) can measure seismic wavefields in unconventional reservoirs with high spatial resolution and large aperture coverage. It can capture high frequency seismic energies during stimulation operations due to the close proximity to sources. High-resolution seismic signals enable geophysicists to characterize the reservoirs in great detail. This study showcases several recent developments on unconventional reservoir characterization using DAS data. We argue that the seismic energies required for these analyses can be naturally generated during stimulation operations. We first demonstrate that microseismic waveforms can be used to evaluate reservoir thickness and shear velocities using guided wave analysis. We also showcase microseismic based fracture imaging using a workflow modified from standard vertical seismic profiling processing. We then discuss the cases that use perforation shots as seismic sources. DAS data from the same well of the shots can record both P-wave and tube-wave energies. The tube waves are sensitive to near-wellbore fracture connectivity and can be used to evaluate the completion efficiency of individual stages. DAS recorded P waves are sensitive to reservoir lateral heterogeneities. The body wave can appear dispersive if wellbore is approximate to a bedding plane with sharp velocity contrast. With these examples, we hope to convince the geophysicist community that DAS is a promising tool with high potential in unconventional reservoir development. Further research and development can significantly increase the geophysicists’ contribution to the field.

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