HOUSTON, Jan 30 : Oil prices dipped a few cents per barrel on Friday, consolidating recent gains and holding near six-month highs on Friday, supported by nagging tensions between the U.S. and Iran. Brent crude futures settled at $70.69 a barrel, down 2 cents or 0.03 per cent. The March contract expires later on Friday. U.S. West Texas Intermediate crude finished at $65.21 a barrel, down 21 cents or 0.32 per cent. "It's really all about Iran right now," said John Kilduff, partner with Again