Oil prices fell on Friday after China, the world’s top crude oil importer, widened its Covid-19 curbs, but were poised for a weekly gain on supply concerns ahead of Europe’s pending cut-off of Russian imports. Brent crude futures eased 78 cents, or 0.8 per cent, to $96.18 a barrel at 0350 GMT, after rising 1.3pc in the previous session. US West Texas Intermediate (WTI) crude futures were down $