Genesis Energy, L.P. is a diversified midstream energy master limited partnership. Its segments include offshore pipeline transportation, marine transportation and onshore transportation and services. Offshore pipeline transportation segment consists of its offshore transportation of crude oil and natural gas in the Gulf of America, which focuses on providing a suite of services to integrated and large independent energy companies. Marine transportation segment provides waterborne transportation of petroleum products and crude oil throughout North America primarily to customers such as refiners and large energy companies. Onshore transportation and services segment provides services through a combination of purchasing, transporting, storing, blending and marketing crude oil and petroleum products primarily to crude oil refiners and producers and performs the processing of high sulfur (or sour) gas streams for refineries to remove the sulfur and selling the related by-product, NaHS.