Due process has been followed in launching this focused study, starting with integration and analysis of available static and dynamic data to characterize selected sectors of the subject reservoir. The objective of this initiative is to build 3D numerical models for characterization of the hydraulic connectivity within the sector models. These sectors have been originally taken out of the corresponding static geological models. Some of the wells in the sectors have data from prior transient tests, which have been utilized to condition the permeability around the corresponding wells. But this step has not been found enough to describe the dynamic behavior on a long term. Hence, data from a multi-well, interference test has been utilized to enhance the dynamic characteristics of fluid movement in the numerical models. This paper presents an integrated approach to characterize the hydraulic communication and heterogeneity in the reservoir. The results of this study have helped improve reservoir characterization in the corresponding part of the reservoir simulation model, providing a more refined input of dynamic pressure and permeability data within the area of interest. Best of all, the reservoir engineers have acquired a wealth of knowledge of reservoir connectivity to be utilized for their reservoir management practices.