The Spanish oil company, Repsol is reporting it has found oil on state leases in the Colville Delta at three of its wells on the North Slope. In a short press release the company calls the prospects “promising” and says changes in the state’s oil tax will improve development prospects. The wells are near the existing Kuparuk field. Repsol has leases both onshore and offshore in the area. It had two spills during its exploratory drilling, which is restricted to the winter season.