Genesis Energy LP focuses on the midstream segment of the crude oil and natural gas industry. It offers various services to crude oil and natural gas producers, and industrial and commercial enterprises. The company's reportable segments are: Offshore pipeline transportation, Marine transportation, and Onshore transportation and services. Maximum revenue is generated from the Offshore pipeline transportation segment, which includes the transportation and processing of crude oil and natural gas in the Gulf of America. The Marine transportation segment provides waterborne transportation of petroleum products and crude oil throughout North America; and the Onshore transportation and services segment deals with crude oil logistics, sour gas processing, and sells sulfur byproducts.