Abstract

A new workflow reliably characterizes natural fractures in the highly complex Sechura basin in Peru, where acoustic logs alone were unable to characterize fracture networks adequately. The new approach, which integrates the response of borehole images with a dipole sonic tool, directly impacts the decision criteria of producible intervals where the zones that produce are the zones with open fractures aligned with the maximum horizontal stress. A case study of two wells in the Sechura basin shows how the methodology gives a quantitative way to better understand the fracture networks and fracture dynamics in naturally fractured reservoirs, establishing a novel criterion for fast decisions based on colored flags and horizontal stress directions.

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