Oil prices rose on Friday as investors considered Russia’s threat to halt oil and gas exports to some buyers, but crude was set for a second straight weekly decline as central banks’ aggressive rate hikes and China’s Covid-19 curbs weighed on demand. Brent crude futures rose 27 cents, or 0.3 per cent, to $89.42 a barrel by 0330 GMT. US West Texas Intermediate (WTI) crude futures climbed 15 cent