Physically traded U.S. crude grades were mixed on Friday, dealers said, with sour grades trading higher on the final full day of the volatile roll trading period.

Traders use the three-day roll period to adjust their crude slates, square up positions and net out exposures following the expiration of the U.S. crude futures contract.

Prices to roll U.S. crude oil futures positions from November to December traded at a midpoint of 80 cents a barrel, steady on the day.

The spread between West Texas Intermediate crude futures and global benchmark Brent widened, which typically makes U.S. grades more attractive to foreign buyers.

The discount (WTCLc1-LCOc1) widened to as much as minus $4.44 a barrel. A discount of around $4 suggests an open arbitrage window.

Meanwhile, BP’s 440,000 barrel per day oil refinery in Whiting, Indiana, resumed operations on Friday after a outage prompted a temporary evacuation at the plant, the company said.

The refinery resumed operations after power was restored, BP said in a statement.

Light Louisiana Sweet (WTC-LLS) for November delivery fell 10 cents a midpoint of a $1.53 premium and was seen bid and offered between a 75-cent and $2.30 a barrel premium to U.S. crude futures

Mars Sour (WTC-MRS) rose $1.10 a midpoint of a 40-cent discount and was seen bid and offered between a 50-cent and 30-cent a barrel discount to U.S. crude futures

WTI Midland (WTC-WTM) fell 15 cents to a midpoint of a 25-cent premium and was seen bid and offered between a 15-cent and 35-cent a barrel premium to U.S. crude futures

West Texas Sour (WTC-WTS) rose 8 cents to a midpoint of a 45-cent discount and was seen bid and offered between a 55-cent and 35-cent a barrel discount to U.S. crude futures

WTI at East Houston (WTC-MEH), also known as MEH, traded between a 60-cent and 80-cent a barrel premium to U.S. crude futures

ICE Brent December futures fell 5 cents to settle at $65.94 a barrel

WTI December crude futures fell 29 cents to settle at $61.5 a barrel

The Brent/WTI spread (WTCLc1-LCOc1) widened 21 cents to last trade at minus $4.41, after hitting a high of minus $4.10 and a low of minus $4.44
Source: Reuters