Mutili, Peter MutisyaAdewole, Stephen EzizanamiAwuor, Kennedy OtienoOyoo, Daniel Okang’a2020-11-032020-11-032020Mutisya, M. P., Ezizanami, A. S., & Otieno, A. K. Effects of Fluid and Reservoir Characteristics on Dimensionless Pressure and Derivative of a Horizontal Well in a Bounded Oil Reservoir with Simultaneous Single Edge and Bottom Water Drive.e-ISSN: 2278-5728, p-ISSN: 2319-765X.https://www.iosrjournals.org/iosr-jm/papers/Vol16-issue5/Series-4/A1605040113.pdfhttp://ir-library.ku.ac.ke/handle/123456789/20789A research article published in IOSR Journal of Mathematics (IOSR-JM)This study investigates the effects of fluid, wellbore and reservoir characteristics on dimensionless pressure and dimensionless pressure derivatives at late time flow of a horizontal well in a bounded oil reservoir subjected to a single edge and bottom water drive mechanisms. The properties considered in this paper include the dimensionless well length, dimensionless reservoir width and dimensionless pay thickness. The main objective is achieved by using the source and Green’s functions together with Newman product method. Spline functions for interpolation in curve fitting was used to plot the graphs aided by MATLAB program. Results show that the dimensionless pressure increases with decrease in dimensionless reservoir width and pay thickness. The dimensionless pressure derivative potentially collapses to zero when the dimensionless pressure becomes constant. Higher oil production is indicated by larger magnitudes of dimensionless pressure derivatives. Information in this study will assist in designing and completion of horizontal wells in a bounded reservoir for prolonged enhanced oil production.enDimensionless PressureBounded Oil ReservoirHorizontal WellEdge and Bottom Water DriveLate Flow PeriodArticle