The oil rig count, an indicator of future production, declined to 733 for the week ending September 13, from 738 the week before, the data showed.
Following the data, international benchmark Brent crude closed Friday at $60.44 per barrel.
American benchmark West Texas Intermediate (WTI) was down 0.58% on Friday, ending the day at $54.78 a barrel, after closing the previous day at $55.10 per barrel.
By Gulsen Cagatay
Anadolu Agency
energy@aa.com.tr