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Diamond Pipeline Disrupts Oil Flows around U.S.


January 29, 2018, by Devika Krishna Kumar and Bryan Sims

NEW YORK (Reuters) – The Diamond Pipeline has scrambled crude oil flows around the U.S. Gulf Coast and Midwest since it opened in December, cutting supply at the Cushing hub and hammering Louisiana oil prices.

The line from Cushing, Oklahoma to Memphis, Tennessee, a joint venture between Plains All American Pipeline LP and Valero Energy Corp, has dented volumes on the Capline system – the nation’s largest crude pipeline that runs from the Gulf to key refineries in the Midwest.

Prices for Gulf Coast crude grades traded in the Louisiana region have been hit hard. Light Louisiana Sweet (LLS) and Mars – the two main Gulf grades – crashed to six-month lows versus U.S. crude futures. With lower demand for Louisiana crude supplies, the LLS grade in particular is more sensitive to export arbitrage economics and U.S. crude’s discount to Brent narrowed to the tightest in more than five months on Monday.

“Those Capline flows could be backing out LLS barrels into the St. James area, causing more supply and putting pressure on prices,” Adam Bedard, CEO of Denver, Colorado-based ARB Midstream said.

The price for Mars, a medium sour grade, traded on Friday at a $1.10 per barrel discount versus WTI crude futures, the weakest since June. Louisiana Light Sweet slipped to a $2.17 premium on Thursday, also the lowest since June. [CRU/C]

The LLS grade is delivered into the hub in St. James, Louisiana, and Mars is deliverable at the Louisiana Offshore Oil Port (LOOP) facilities in Clovelly, Louisiana.

Volumes on Capline, once a major artery for imports and Gulf of Mexico crude used by U.S. Midwest refiners, have declined sharply as the U.S. shale boom pushed inland crude to the East Coast and Gulf Coast.

The line can carry as much as 1.2 million barrels of oil daily from St. James, Louisiana, to Patoka, Illinois but has seen volumes further eroded by Diamond, which has capacity of up to 200,000 barrels, traders said.

Flows on the Capline trunk line have fallen from about 310,000 bpd in July to about 219,000 bpd in the week ended Jan. 19, while Diamond was just above 150,000 bpd in that week, according to data from energy intelligence and monitoring firm Genscape.

The 440-mile long Diamond line feeds Valero’s Memphis, Tennessee refinery, which has a capacity of about 190,000 bpd. Valero has historically moved large volumes from North Dakota’s Bakken shale region by rail to Louisiana and then shipped it up Capline, a long and expensive route, traders said.

In December, Marathon Pipe Line LLC said it would reverse Capline, pending agreement among owners, to initially send about 300,000 bpd of crude south beginning in the second half of 2022. However, if supply is getting stuck in Louisiana as a result of Diamond, the additional crude from Capline could worsen that effect.

The Diamond start-up has helped draw down inventories in Cushing, traders said. Stockpiles declined by about 2.6 million barrels in the week to Jan. 26, according to Genscape on Monday, traders who saw the data said.

U.S. crude’s discount to Brent hit $3.77 a barrel on Monday, the tightest since August 21. A wide spread between the two benchmarks incentivizes U.S. crude exports; the tightening may have made Gulf grades less attractive for overseas buyers.

 

Reporting by Devika Krishna Kumar in New York and Bryan Sims in Houston; Editing by Andrew Hay

 



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