* WTI crude supported by U.S./Europe arbitrage window
* Crude has soared nearly 20 pct in August on potential output freeze
* But analysts warn of rally based on potential producer talks
By Henning Gloystein
SINGAPORE, Aug 18 (Reuters) - Oil prices dipped in early trading on Thursday as the prospect of record Saudi output weighed on markets and as traders cashed in on profits following an almost uninterrupted price rally this month of nearly 20 percent.
International Brent crude oil futures LCOc1 were trading at $49.67 per barrel at 0050 GMT, down 18 cents from their last close.
Traders said the price dip was due to profit taking following a strong rally this month, and as traders priced in the prospect of another production record from top exporter Saudi Arabia.
Saudi Arabia is sending signals that it could boost its crude oil supplies in August, even higher than its record 10.67 million barrels per day reached in July, as it gets ready for tough talks next month for a global output freeze pact. prices remain 20 percent higher than in early August and hit almost $50 a barrel the previous day, supported by a potential freeze or even cut in output following a meeting between the Organization of the Petroleum Exporting Countries (OPEC) and other major producers like Russia, scheduled for next month
Analysts at Citi warned of the risks of a price rally based largely on potential future talks, given that similar meetings failed to reap results earlier this yerar.
"OPEC cooperation hopes should be treated with caution, as this is shaky ground to base a bull rally on," the U.S. bank said.
In the United States, West Texas Intermediate (WTI) crude futures were at $46.79 a barrel, flat with its last close.
The relative strength of WTI in Thursday trading was a result of a flood of new orders to ship U.S. crude to Europe in order to take advantage of arbitrage opportunities resulting from the WTI/Brent price spread. TAKE A LOOK-World oil glut persists as global slowdown looms