* Oil drops toward $117 after U.S. inventory data
* Data shows big increases in crude and distillate stocks
* White House says punitive measures needed against Iran (Updates prices, details, changes dateline from LONDON)
NEW YORK, Aug 6 (Reuters) - Oil dropped to a three-month low under $118 a barrel on Wednesday as rising U.S. crude inventories heightened concerns of a demand slowdown in the world's top consumer.
U.S. light crude <CLc1> traded down $1.69 at $117.48 a barrel by 12:41 p.m. EDT (1641 GMT) after hitting $117.11, the lowest level since early May and $30 off the record $147.27 a barrel struck on July 11.
London Brent crude <LCOU8> fell $1.03 to $116.67 a barrel.
Crude oil stocks rose by 1.7 million barrels in the week to Aug. 1, according to data from the U.S. Energy Information Administration (EIA), well above analysts' forecasts for a 300,000-barrel build. [
]Stocks of distillate fuels, including heating oil and diesel, rose by 2.8 million barrels, also above forecasts, while gasoline inventories fell by a steep 4.4 million barrels against forecasts of a 1.2 million barrels drop.
"The EIA data showing big increase in crude stocks are bearish, but the gasoline numbers showing a much larger than expected draw is certainly bullish," said Phil Flynn, analyst for Alaron Trading in Chicago. "But data also show that gasoline supply was down due to a decline in imports."
U.S. energy stockpiles have been climbing in recent weeks amid mounting evidence that surging pump prices and an economic slowdown are hitting fuel consumption.
Adding to weakness, Tropical Storm Edouard, the fifth named storm of the 2008 Atlantic hurricane season, hit the Texas coast without causing any major disruptions to U.S. energy operations. [
]Oil companies were returning workers to offshore rigs in the Gulf of Mexico and resuming normal operations at refineries along the coast.
"The next support area is $117. If we break through $117 we are probably not going to be able to create any upward momentum in the market," said Rob Kurzatkowski, futures analyst at optionsXpress in Chicago.
Crude's losses were tempered somewhat by news of an explosion on the Baku-Tbilisi-Ceyhan oil pipeline in eastern Turkey late on Tuesday that halted oil flows along the key pipeline.
Nigerian supply concerns amid ongoing disruptions due to militant attacks and the threat of disruptions from Iran should its standoff with the West worsen have also been in focus, dealers said.
Iran says it is seeking to master nuclear technology only to generate electricity and has repeatedly refused to halt its atomic work, prompting the U.N. Security Council to impose three rounds of penalties on Tehran since 2006.
The U.S. State Department said major powers had agreed on Wednesday to consider more U.N. sanctions against Iran after Tehran gave no concrete reply to their demand that it freeze its nuclear activities. [
] (Additional reporting by Matthew Robinson in New York, Seng Li Peng in Singapore and Barbara Lewis in London, editing by Matthew Lewis)