Calumet Specialty Products Partners, L.P. (Calumet) is a producer of specialty hydrocarbon products in North America. The Company's segments include specialty products, fuel products and oilfield services. In its specialty products segment, it processes crude oil and other feedstocks into a range of customized lubricating oils, white mineral oils, solvents, petrolatums and waxes. It also blends and market specialty products through Royal Purple, Bel-Ray, TruFuel and Quantum brands. In its fuel products segment, it processes crude oil into a range of fuel and fuel-related products, including gasoline, diesel, jet fuel, asphalt and heavy fuel oils, as well as reselling purchased crude oil to third party customers. Its oilfield services segment manufactures and markets products and provides oilfield services, including drilling fluids, completion fluids, production chemicals and solids control services to the oil and gas exploration industry throughout the United States.