[size=36]Within a week, Brent and Basra closed lower, and the US was up[/size]
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International oil exchanges closed on fluctuating prices, despite their increase in its last session on Friday by more than 4%.
Brent crude closed in the last session, up by $4.10 to reach $111.55, but it recorded weekly losses of 0.84 cents, equivalent to 0.75%.
US West Texas Intermediate crude closed $4.36 higher to $110.49 a barrel, but recorded weekly gains of 0.72 cents, or 0.66%.
Basra Heavy crude also closed higher, by $2.74, to reach $96.43, but it achieved significant weekly losses of $7.33.
And oil prices were volatile, supported by fears that a possible European Union ban on Russian oil may tighten supplies, but under pressure from fears that the outbreak of the Corona pandemic could reduce global demand.