Oil prices around the world should start falling if Libyan rebels succeed in toppling Moammar Gadhafi's regime, though the full effect won't be felt for months, according to the Associated Press.

Brent crude for October delivery was down $3.22 per barrel to $105.40 on London's ICE Futures exchange. Benchmark oil for September delivery was down 25 cents to $82.01 a barrel in electronic trading on the New York Mercantile Exchange. Crude fell 12 cents to settle at $82.26 on Friday.

When fighting broke out, oil was trading at around $84 a barrel. It quickly spiked above $93 and kept rising to a high above $110 at the end of April. Demand from emerging markets including China was also a factor in the rise. Oil has fallen recently along with stocks because of concerns about the global economy.

Libya used to export about 1.5 million barrels of oil per day, almost all of which have been cut off. Although Libyan oil amounted to less than 2 percent of world demand, its loss affected prices because of its high quality and suitability for European refineries.

On Sunday, August 21 night, rebel forces pushed into Tripoli without meeting much resistance, hours after they overran a major military base that defended the capital. Opposition fighters captured Gadhafi's son and one-time heir apparent, Seif al-Islam.