* Brent hits $75.00/bbl, highest since July 31
* U.S. crude stocks fall as refining holds near record high -EIA
* Prices supported by oil supply cut due to Iran sanctions
* Iran threatens to hit United States, Israel
(Updates with market settle, adds commentary)
By Stephanie Kelly
NEW YORK, Aug 22 (Reuters) - Oil prices rose 3 percent on Wednesday, with Brent crude futures hitting a three-week high, after U.S. government data showed a larger-than-expected draw in crude inventories and as Washington's sanctions on Iran signaled tightening supplies.
Brent crude futures LCOc1 rose $2.15, or 3 percent, to settle at $74.78 a barrel. The global benchmark reached $75.00 during the session, the highest since July 31.
U.S. West Texas Intermediate (WTI) crude CLc1 futures rose $2.02 to settle at $67.86 a barrel, a 3.1 percent gain.
U.S. crude inventories USOILC=ECI fell 5.8 million barrels last week, the Energy Information Administration said, exceeding the 1.5 million-barrel draw forecast by analysts polled by Reuters. EIA/S
Refinery crude runs USOICR=ECI slipped 89,000 barrels per day from the previous week's record high to 17.9 million bpd, EIA data showed. Refinery utilization rates USOIRU=ECI remained unchanged last week at 98.1 percent of total capacity, the highest rates since 1999.
"Strong runs contributed to the big crude draw where about half of the decline was offset by combined gasoline and distillate stock builds," Jim Ritterbusch, president of Ritterbusch and Associates, said in a note.
U.S. gasoline stocks USOILG=ECI rose 1.2 million barrels, while distillate inventories USOILD=ECI increased 1.8 million barrels, EIA data showed.
Oil also found support from a weaker dollar, which has slipped this week in response to U.S. President Donald Trump's comment that he was "not thrilled" by the Federal Reserve's interest rate increases. USD/ weaker dollar makes oil less expensive for buyers using other currencies.
Oil prices also drew support from the prospect of a drop in crude exports from Iran in response to new U.S. sanctions on the No. 3 producer in the Organization of the Petroleum Exporting Countries.
U.S. sanctions are having a strong effect on Iran's economy and popular opinion, National Security Adviser John Bolton said on Wednesday. oil companies have started to cut back on Iranian purchases, although Chinese buyers are shifting their cargoes to Iranian-owned vessels to keep supplies flowing. Iran issue continues to occupy traders' minds," said Greg McKenna, chief market strategist at futures brokerage AxiTrader.
Ratcheting up tensions, Iran warned on Wednesday it would hit U.S. and Israeli targets if it were attacked by the United States after Trump's security adviser said Washington would exert maximum pressure on Tehran going beyond economic sanctions. has started to boost supplies following a deal with Russia and other allies in June, although producers have been cautious so far. Saudi Arabia told OPEC it cut supply in July, rather than increasing output as expected. OPEC/M
Signs of tighter supply countered concern about slowing oil demand stemming partly from the trade dispute between the United States and China, the world's two largest economies.
U.S. and Chinese officials were set to resume talks on Wednesday, but Trump said he expected there will be no real progress.