Seahorse Pipeline

Part of the Global Oil Infrastructure Tracker, a Global Energy Monitor project.

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Seahorse Pipeline is was a proposed oil pipeline running from Oklahoma, USA to Louisiana, USA. As of 2024 it appears to be cancelled.

Location

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

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Project Details

• Owner: Seahorse Pipeline LLC
• Parent company: Blackstone Group (via Blackstone Infrastructure Partners, via Tallgrass Energy); True Companies (via Bridger Pipeline LLC)
• Capacity: 800,000 barrels per day
• Length: 700 miles
• Diameter: 30 inches
• Status: Cancelled
  • Originally proposed
• Start year: 2022 (delayed from 2021)

Background

The pipeline is associated with the Plaquemines LNG Terminal project. In 2018 it was in open season.

In November 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.

In August 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.

The original start year was 2021, but construction had yet to begin or go into construction as of March 2022. The project has been delayed, with the open season being extended during 2021.

As of early 2024, the project was listed as cancelled according to the EIA.