Based on the nature of the crude oils, it was determined that the process could utilize a nontraditional crude oil fractionation unit that would separate only process gas oil, naphtha, and kerosene fractions from all heavier fractions in the crude oil. The crude unit would be smaller and operate at a lower temperature than traditional crude units separating diesel and gas oil fractions. All heavier fractions would be processed together to remove sulfur and to convert waxy heavier oils to maximize gasoline and diesel production.
Analysis of the crudes produced on the reservation was conducted. The light, sweet crude slate allowed for a simple refinery configuration that matched crude oil specifications, estimates of future crude volumes produced from the reservation, and specifications for product slate, quality, and market potential for the products. A proposed refinery was sited within 30 miles of the majority of crude oil production. The proposed refinery location was located away from reservation population centers, so the potential for community development near the proposed refinery was analyzed.
Based on the process design, the principal products from 6,000 barrels per day of crude oil feed would be 3,600 barrels per day of gasoline, 470 barrels per day of jet fuel, and 1,900 barrels per day of diesel fuel. The value of these products was estimated at $87,500,000 for 2003. Based on the preliminary engineering of the process, it was determined a refinery would cost approximately $86,700,000 to construct and about $10,600,000 per year to operate. The project could have a return on investment of 20%. In a highly competitive crude oil market, the price of crude oil would rise relative to the value of the products, and the return would drop to 4%. Under these conditions, the tribe would still benefit, because it would realize higher revenues for the crude oil it produces.
The study gives a tribe or Native American corporation the knowledge necessary to evaluate processing options and to be a more savvy marketer of its crude oil.