LONDON (Reuters) - An influx of fresh fund buying and geopolitical worries will most likely push oil prices to new record highs soon, analysts said on Tuesday, while the most bullish predicted prices to eventually climb to $100 a barrel.

Supply concerns in Nigeria, Iran and other key oil-producing countries have ignited U.S. crude prices, up 13 percent this year and within $2 of the all-time record high of $70.85, reached in late August 2005 in the wake of hurricane damage in the United States.