Oil prices resumed their decline on Monday, falling around 1% as worries about a drop in demand for fuel products in the wake of yet more European lockdowns dominated trading.
Brent crude was down 60 cents, or 0.9%, at $63.93 a barrel by 0136 GMT. U.S. oil was off by 68 cents, or 1.1%, at $60.74 a barrel. Both contracts fell by more than 6% last week.
Germany plans to extend a lockdown to contain COVID-19 infections into a fifth month, according to a draft proposal, after new cases exceeded levels authorities say will cause hospitals to be overstretched.
The Organization of the Petroleum Exporting Countries and its allies have put in place unprecedented production cuts in a pact to balance global markets after demand plunged during the COVID-19 pandemic.
U.S. drillers are starting to take advantage of an earlier spike in prices on optimism about returning demand, adding the most rigs for extracting oil since January in the week through Friday.
The oil and gas drilling rig tally, an early indicator of future production, rose nine to 411 last week, the highest since April, energy services firm Baker Hughes Co said in its closely followed report on Friday.
The rig count has been rising over the past seven months and is up nearly 70% from a record low of 244 in August.