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Conventional methods of perforation by shooting (PS) cannot achieve the expected wellbore productivity due to the presence of a region of reduced permeability around the perforation tunnel. Even though this phenomenon is well-known in the petroleum industry, few have attempted to quantify the damage due to PS. This paper quantifies the permeability damage followed by the recommendation of a novel perforation technique. This study has established that permeability of an open-hole is reduced in the range of 30%–75% due to the implementation of the PS technique. In order to remedy this problem, a new perforation technique called perforation by drilling (PD) has been proposed in this paper. To simulate a perforated completion, cylindrical sand samples with varying strength and porosity were prepared. These samples were perforated by the PS, PD and Casting techniques. Perforations created by the …