TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractIn this study, we apply geostatistical and flow simulations to a section of the Endicott field, Alaska to assess options for well placement. Both sequential Gaussian and sequential indicator simulations were used to model Zones 2A and 2B. Wells were then placed in the models to assess sensitivities to location and petrophysical properties. Some cases were found to have much higher productivities and lower sensitivities.Three porosity and permeability realizations, selected from 100 realizations and representing high, medium, and low cases, were used for fluid flow simulations. Flow simulations were used to evaluate 15 potential well locations. We analyzed the performance of fully penetrating vertical and 600-ft, 1800ft, and 3000-ft horizontal wells at each location considering various well orientations, k V /k H ratios, and position in the reservoir geosystem.The flow simulation results show that the 3000-ft horizontal well gives the best performance in most of the cases. However, the performance of the horizontal wells deteriorated rapidly with a decrease in the permeability anisotropy (k V /k h ). In that case, a vertical well is a better option, especially for the thick reservoir here. The proposed method should find application in targeting infill wells in a new development.