Abstract: Formation damage is one of the major challenges facing the oil and gas well. To tackle this problem, drilling and production engineers have come up with methods and ways to solve such a problem. In this work, several pressure build up data were gotten from unconsolidated oil well formation in the Niger delta part of Nigeria. The data were analytically analyzed for various reservoir parameters such as skin factor, permeability, flow rates, bottom whole pressure and their effects on production of oil and gas. The data obtained were plotted in excel software using Horner plot method. The results obtained for both wells showed a negative skin (-ve) meaning that the wells were not actually damaged. It also indicated that both wells have higher permabilities which resulted in higher flow rates.

Keywords: Formation Damage, Reservoir Parameters, Pressure Data, Production.