This paper presents a Gulf of Mexico field case study describing the use of horizontal wells to improve oil recovery in thin attic-oil, strong waterdrive reservoirs. Prewell planning shows the use of reservoir simulation for well performance forecasts, discusses selection of drilling mud for minimal damage, logging while drilling (LWD) for steering and optimal completion techniques. Post-well results show that horizontal wells, applied with an integration of technology, not only help accelerate production but also improve oil recovery compared with conventional wells for this type of reservoir problem.