Seahorse Pipeline

From Global Energy Monitor
This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor.

Seahorse Pipeline is a proposed oil pipeline running from Oklahoma, USA to Louisiana, USA.[1]


The pipeline will run from Cushing, Oklahoma, USA to St. James, Louisiana, USA.[2]

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Project Details

  • Owner: Tallgrass Energy[3]
  • Proposed capacity: 800,000 barrels per day[3]
  • Length: 1,126.5 kilometers / 700 miles[3]
  • Diameter: 30-inches[3]
  • Status: Proposed[3]
  • Start Year: 2021[4]


The pipeline is associated with the Plaquemines LNG Terminal project. It is currently in open season.[1]

In November of 2018, Tallgrass Energy announced it had signed a binding agreement with an unaffiliated third-party that has the potential to be an anchor shipper and equity partner.[5]

In August of 2019, Blackstone Infrastructure Partners offered to buy out the remaining shares of Tallgrass Energy LP following a 40% slump since it took control of the pipeline operator earlier that year. The take-private proposal is valued at about $3 billion, according to data compiled by Bloomberg. Tallgrass Energy's financial problems have led to speculation that the Seahorse Pipeline will be cancelled, but no decision has been publicly announced.[6]

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