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Permian pipeline work scheduled for March

  • : Crude oil
  • 26/01/06

Maintenance is planned for the 1.5mn b/d ExxonMobil-operated Wink-to-Webster oil pipeline in Texas in March.

The pipeline is an important conduit of WTI to the Houston, Texas, area, including to the Magellan East Houston (MEH) terminal, now owned by US midstream firm Oneok. MEH is the pricing hub for Argus' WTI Houston assessment, the secondary benchmark for light sweet crude at the US Gulf coast.

Because of scheduled maintenance on the pipeline, Wink-to-Webster supplies "will be delivered ratably out of Oneok's system as they are received into [the] system," Oneok told Argus.

The length of downtime as a result of the maintenance and the work being done has not been confirmed. ExxonMobil did not immediately respond to a request for details on the Wink-to-Webster maintenance, nor did Plains or Energy Transfer, partners in the joint venture project.

The Wink-to-Webster pipeline previously underwent maintenance for 10 days in June 2024. In that instance, Oneok let shippers of WTI from the Wink-to-Webster pipeline to the MEH terminal know that their June volumes would be designated to be shipped following the pipeline work for the remaining days in the month, instead of rateably over the entire delivery month as is typical in the US pipeline market.

Decreased takeaway capacity as a result of the 2024 pipeline maintenance weighed on WTI's value in Midland relative to Houston, pushing the locational value spread averaged for June 2024 deliveries to 90¢/bl, a 50¢/bl increase from its May 2024 average and its widest spread since 2020. For comparison, the WTI Houston premium to WTI Midland has averaged a range of 13-42¢/bl between trade for January 2025 deliveries to January 2026.

Most recently, January WTI in Houston averaged a roughly 25¢/bl premium over Midland.

The Permian-quality light sweet crude in Houston for June 2024 rose to average a multi-month high against Domestic Sweet, while WTI Midland fell to average its lowest at the time in over a year.

The volatility in WTI Houston premiums for June 2024 also incentivized some companies to seek out balmo contracts in the financial market — a pricing mechanism that allows traders to hedge against volatility within a particular hedge month by exposing them to price movements from the day of their transaction through the end of the trade month — omitting any early-month price swings.


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