Oil prices rose on Thursday, boosted by OPEC production cuts and the potential for new U.S. sanctions against Iran, but gains were limited by growing U.S. crude inventories.  Brent crude futures LCOc1 rose 26 cents to settle at $73.62 a barrel, a 0.35 percent gain. U.S. West Texas Intermediate (WTI) crude CLc1 rose 50 cents to settle at $68.43 a barrel, a 0.74 percent increase. “The price move today is probably based off Iran and the tight oil supply market that we already have,” said Rob Thummel, portfolio manager at energy investment manager Tortoise Capital in Leawood, Kansas. “The margin for error right now is just so low in the oil market that you can’t just take supply off the market.” Iran’s foreign minister said U.S. demands to change […]