Crude from the Bakken shale formation weakened for the first time in eight days against U.S. benchmark West Texas Intermediate.
Bakken fell $1 a barrel to a premium of $2.50 a barrel over WTI at 1:50 p.m. New York time, according to data compiled by Bloomberg. It had risen $8.50 a barrel since June 3, swinging from a $5 discount to a $3.50 premium.
Oils produced in the Gulf Coast weakened against WTI. Heavy Louisiana Sweet shrank by 50 cents a barrel to a premium of $9.25 a barrel over WTI, and Light Louisiana Sweet gained 10 cents to a $9.25 premium.
Southern Green Canyon lost 25 cents a barrel to a $1.75 premium over WTI.
Poseidon’s premium fell 35 cents to $2.25 a barrel and Mars Blend fell 40 cents to $2.90 over WTI. Thunder Horse slipped 20 cents to a premium of $5.85.
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