Oil prices fell on Friday as a massive storm raced inland past the heart of the US oil industry in Louisiana and Texas without causing any widespread damage to refineries.
US West Texas Intermediate (WTI) crude futures fell 6 cents, or 0.1 percent, to $42.98 a barrel as of 0202 GMT, adding to overnight losses.
However WTI is on track to rise 1.5 percent rise this week, for a fourth straight week of gains.
Brent crude futures for October, set to expire on Friday, fell 2 cents to $45.07 a barrel, heading for a weekly gain of 1.6 percent. The more active November contract rose 1 cent to $45.61.