* U.S. crude inventories rise unexpectedly -EIA data
* U.S. gasoline stocks fall 5.5 mln barrels -EIA
* Four-week average for U.S. crude exports hits record
* Saudi energy minister says OPEC, others keep options open (New throughout, updates prices, market acitvity, comments, adds U.S. inventory data; new byline, dateline, previous LONDON)
NEW YORK, Oct 25 (Reuters) - Oil prices slipped on Wednesday from four-week highs after a surprising increase in crude inventories, though the market was underpinned by statements from top exporter Saudi Arabia, which said it was determined to end a three-year supply glut.
Gasoline and heating oil futures rose after U.S. government data showed substantial drawdowns in inventories headed into the winter fuel season. That and an increase in U.S. refining output buoyed hopes for a draw in crude inventories in coming weeks.
By 11:38 a.m. EDT (1538 GMT), Brent crude futures dipped 17 cents to $58.16 a barrel. U.S. West Texas Intermediate crude was down 30 cents at $52.17.
The U.S. Energy Information Administration reported that crude inventories rose by 856,000 barrels in the week to Oct. 20. Analysts had expected a decrease of 2.6 million barrels. Production rebounded from a sharp falloff due to Hurricane Nate, and imports rose as well.
However, the EIA data showed gasoline and distillate inventories both fell by more than 5 million barrels, and refinery utilization rates rose 3.3 percentage points.
"Product stocks fell sharply despite higher processing, which points to very robust demand," said Carsten Fritsch, oil analyst at Commerzbank AG in Frankfurt, Germany.
U.S. RBOB gasoline futures rose 0.4 percent to $1.7226 a gallon, while heating oil futures, a proxy for distillates like diesel and fuel oil, gained 0.2 percent to $1.8249 a gallon.
On Tuesday, Saudi Arabian Energy Minister Khalid al-Falih on Tuesday raised the prospect of prolonged output restraint once an OPEC-led pact to cut supplies ends.
Global inventory levels are falling and demand is strong, but Brent has remained below $60 a barrel, partly due to concern the crude glut may grow again after March 2018, when the output reduction deal is due to end.
The Organization of the Petroleum Exporting Countries, Russia and other producers have cut oil output by about 1.8 million barrels per day (bpd). OPEC's next meeting is on Nov. 7 in Vienna, Austria, when they will consider extending the deal.
Disruptions to exports from Iraq, OPEC's second-largest producer, amid tensions between Baghdad and autonomous Iraqi Kurdistan have supported oil. Kurdish authorities on Wednesday offered to suspend their independence drive.
While other producers cut output, U.S. production rebounded to 9.5 million bpd in the latest week. U.S. crude exports have averaged 1.7 million barrels a day over the past four weeks, highest ever.
"Saudi Arabias determination to rebalance the market, together with ongoing geopolitical tensions in the Middle East, will remain supportive of oil prices," said Abhishek Kumar, senior energy analyst at Interfax Energys Global Gas Analytics in London.
"However, rising oil production in the US and persistently high exports from the country will be the key bearish factors."
(Additional reporting by Scott DiSavino in New York, Amanda Cooper in London and Osamu Tsukimori in Tokyo; Editing by Edmund Blair and Jason Neely)