Prudhoe Bay Oil Field is a large oil field on Alaska's North Slope. It is the largest oil field in both the United States and in North America, covering 213,543 acres (86,418 ha) and originally containing approximately 25 billion barrels (4.0×10⁹ m³) of oil. The amount of recoverable oil in the field is more than double that of the next largest field in the United States, the East Texas oil field.