Moment tensor inversion of perforation shots using distributed acoustic sensing

Distributed acoustic sensing (DAS) fibers have enabled various geophysical applications in unconventional reservoirs. Combined with perforation shots, a DAS fiber can record valuable guided waves that propagate the reservoir formation and carry information about its properties. However, representation of shots as seismic sources, needed to conduct quantitative analysis, remains unknown. We model such sources using superposition three mechanisms for which we derive moment tensor representation. Using field data recorded same well where perforations are located, establish workflow invert resolvable components total 100 different shots. By scrutinizing inversion results, conjecture indicate how effectively shot creates micro-cracks surrounding rock. Furthermore, our inverted tensors form basis subsequent elastic full-waveform inversion.