Oil prices nudged higher in Asian trade on Wednesday on hopes for stronger than expected U.S. crude demand, while doubts over the prospect of reaching an agreement next week on Iran’s nuclear program eased oversupply concerns. Brent crude for August delivery (LCOc1) rose 3 cents to $64.48 a barrel by 0703 GMT (0303 EDT), after settling up $1.11, or 1.8 percent, in the previous session. “U.S. crude inventories have been at historic highs …