In recent months, investors have watched two crude oil pipeline projects falter because of lack of interest during the open season. In this video, contributor Aimee Duffy talks about what the open season is, and what it means for Energy Transfer Partners' (NYSE:ETP) current project. The partnership commenced open season on its Gulf Coast Access pipeline system last week, and investors need to remember these shipping commitments are no sure thing.

Fool contributor Aimee Duffy has no position in any stocks mentioned. Fool contributor Tyler Crowe has no position in any stocks mentioned. The Motley Fool recommends ONEOK Partners, L.P. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.