Shell Midstream Partners, L.P. is a master limited partnership company, which owns, operates, develops and acquires pipelines and other midstream assets. The Company conducts its operations through its subsidiary, Shell Midstream Operating, LLC. Its assets consist of interests in entities that own crude oil and refined products pipelines serving as key infrastructure to transport onshore and offshore crude oil production to Gulf Coast and Midwest refining markets and to deliver refined products from those markets to demand centers. As of December 31, 2016, it owned interests in seven crude oil pipeline systems, three refined products systems, one natural gas gathering pipeline system and a crude tank storage and terminal system. Its pipeline and terminal systems include Zydeco crude oil system, Auger crude oil system, Mars crude oil system, Bengal product system, Poseidon crude oil system, Odyssey crude oil system, Proteus crude oil system and Endymion crude oil system.