Experts believe that the threat of the spread of the Delta strain for the oil market is temporary.
On Friday, benchmark crude oil prices are decreasing after rising to highs of more than two weeks.
Oil quotations are rising after rising on Wednesday to two-week highs on data on the decline in US energy stocks.
The market is supported by the prospects of limited supply and strong demand in the US.
On Monday, oil quotations declined amid fears of weakening global demand for raw materials amid rising numbers of people tested positive for COVID-19.
At the beginning of the week, futures fell sharply.