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Hunting for microseismic reflections using multiplets

Noha S. Farghal and Stewart A. Levin


Microseismic monitoring of hydraulic fracturing is often used to locate reactivated faults and newly created fractures by locating the microseismic sources that occur during the process. These microseisms generate reflections as well as direct arrivals, but they tend to be fairly weak and quite difficult to locate and image. In this work we identify multiplets, i.e. repeated microseisms originating from about the same subsurface location, and thereby identify their consistent reflections.