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Oil settled more than 1 percent lower on Friday after oilfield services firm Baker Hughes reported its U.S. rig count declined for a 27th straight week.
The number of rigs exploring for oil in the United States fell by 7, the biggest drop since May, to a total of 635. This time last year, the rig count stood at 1,542.
For the week, both Brent and U.S. crude were up 2 percent.
Oil fell for the second straight day on Friday, with investors taking more profits from the week's gains after Saudi Arabia signaled it was ready to raise production to record highs, reigniting worries about oversupply.
Gasoline also fell, retreating from seven-month highs. Even so, the fuel had one of the strongest fundamentals on the U.S. oil complex, traders said, due to runaway demand from relatively low pump prices and seasonally busy road travel.