International benchmark Brent crude reached as high as $70.02 per barrel while American benchmark West Texas Intermediate (WTI) saw $66.28 at 06.42 GMT on Monday.
At the end of the week on Friday, Brent crude saw prices at $70.28 per barrel while WTI was recorded at $65.56.
The number of oil rigs in the U.S. increased by 12 last week, according to the oilfield services company Baker Hughes data released on Friday.
The total number of oil rigs in the country rose to 759 for the week ending Jan. 26, from 747 the previous week, the data showed.
According to U.S.' Energy Information Administration (EIA) on Wednesday, the U.S.' crude oil output rose by 258,000 barrels per day (bpd).
The EIA forecasts that U.S. crude oil output will average 10 million bpd this year, and 10.8 million bpd next year.
In addition, in November 2019, crude oil production in the country is estimated to reach over 11 million bpd.
By Gulsen Cagatay