Genesis Energy L.P. is a limited partnership focused on the midstream segment of the oil and gas industry. The Company operates through four segments: Offshore Pipeline Transportation, Refinery Services, Marine Transportation, and Supply and Logistics. The Offshore Pipeline Transportation segment is engaged in the offshore transportation of crude oil and natural gas in the Gulf of Mexico. The Refinery Services segment is involved in the processing of high sulfur (or sour) gas streams as part of refining operations to remove the sulfur and selling the related by-product, sodium hydrosulfide (NaHS). The Marine Transportation segment provides waterborne transportation of petroleum products and crude oil throughout North America. The Supply and Logistics segment is engaged in terminaling, blending, storing, marketing, and transporting crude oil and petroleum products (fuel oil, asphalt and other heavy refined products) and carbon dioxide.