 This paper proposes a new methodology for interpreting interference tests in naturally fractured reservoirs. The method uses characteristic points found on the pressure-and-pressure derivative log-log plots to calculate the inter-parosity flow parameter, lambda, and the storativity ratio of the fractures, omega. Examples are then used to demonstrate how the proposed methodology accurately reproduces the natural fracture parameters. This article was authored by Freddie Umberto Escobar, Carlos Andres Torregrossa-Merlis, and Geiber Olea-Marine.