Capline Oil Pipeline

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This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor and the Center for Media and Democracy.

Capline Oil Pipeline is the largest crude oil pipeline in the United States.[1]


The pipeline originates in St James PAA Oil Terminal, St. James, Louisiana, and terminates at Patoka Oil Terminal Hub, Patoka, Illinois.

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Project Details

  • Operator: BP (minority holder), Plains All American Pipeline (54%, majority holder)[2] Marathon Petroleum (minority holder)
  • Current capacity: 1,100,000 barrels per day[2]
  • Length: 631 miles[2]
  • Status: Operating
  • Start Year: 2005


The 40-inch Capline oil pipeline spans 631 miles, transporting crude oil and condensate from Louisiana to the Midwest.[2] BP uses the pipeline to supply its Indiana refinery.[1]

In April 2016, Marathon Chief Executive Gary Heminger said that the pipeline would likely be reversed to transport heavy Canadian crude to Louisiana, United States once oil prices recover.[1] In 2016, Capline transported only 360,000 barrels per day, about a third of its 1,100,000 barrels per day capacity.[3]

In May 2017, Plains All American told investors the pipeline would be "idled as redundant pipeline capacity" as new competing pipes are place in service, and "shut down" by 2021.[3]

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