Through an example in the Midland Basin, we demonstrate how dynamic parameters characterize a complex reservoir response to hydraulically-stimulated stacked wells where the completion of the investigated stages on one well (A-well) proceed the treatment of the second well (B-well). These two stacked wells target two different siliciclastic formations within 400 ft, separated by a carbonate formation that acts as a hydraulic fracture barrier. Dynamic parameter characterization indicates that the A-well stages generate high anelastic deformation (PI) associated with fluid-driven deformation around the injection interval at early stages of completion where stress is more gradually released through a series of relatively low stress events in a spatially contained target zone (Low SI and DI). The stress-triggered seismicity plays a role for the later event-clusters for these stages. In contrast with this observation, the B-well stages, which are completed after the A-well stages, demonstrate low deformation (Low PI) in the highly stressed rockmass (high SI) where the energy release is more episodic. The presence of the previously stimulated vertical well (depleted zone) in the vicinity of the completed stages can be tracked by the temporal evolution of deformation where high diffusion (high DI) is observed.
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