Brent oil rose on Monday after production outages in Libya and South Sudan curbed exports and tightened global supply.
U.S. crude oil erased earlier gains but still ended higher on upbeat economic data and expectations that supplies would continue to drain from the benchmark delivery point for the U.S. oil futures contract.
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Preliminary estimates for weekly data show a decline of more than 1 million barrels at Cushing, Oklahoma, where oil is delivered against the New York Mercantile Exchange oil futures contract, according to traders and brokers who cited data from energy intelligence group Genscape.
The Cushing estimate drove the spread between the global benchmark Brent and U.S. oil
"The longs came in and tried to drive the market higher," said Gene McGillian, analyst at Tradition Energy in Stamford, Connecticut. "We failed to attract another wave of buying and that's why you saw some people bail out before the end of the day."
Brent crude settled 79 cents higher at $110.64 a barrel, extending gains for a second straight week. U.S. oil was up 62 cents to $102.82, after climbing more than $1 earlier in the session.
U.S. oil garnered support from gains in the U.S. stock market. The S&P 500 turned positive for the year and the Nasdaq hit a 14-year high.
Oil also drew support from a partial closure of the lower Mississippi River, including the Port of New Orleans, as crews cleaned up oil that spilled when a barge was hit by another vessel. The closure may delay some deliveries.
Both contracts were off their highs reached last week when they were supported, in part, by cold weather in the U.S. which boosted demand for distillates, which include heating oil.
Oil demand tracks global economic growth closely and markets found support on Monday from a ream of sound global economic indicators.
The world's top economies have targeted a goal of generating more than $2 trillion in additional output over five years while creating millions of new jobs.
German business morale rose in February to its highest since July 2011, suggesting Europe's largest economy will grow faster in the first quarter after expanding only modestly last year.
LIBYA, SUDAN SUPPORT
Brent oil drew support from continued unrest in Libya and South Sudan that has cut into exports.
Libyan production plunged further over the weekend, falling to 230,000 barrels per day (bpd) on Sunday after a new protest shut the El Sharara field. The government initiated spending caps Monday as some ministries struggled to pay their bills.
Before nationwide protests began last summer, Libyan oil production was closer to 1.4 million bpd.
South Sudan's oil production has fallen to about a third of its capacity at 170,000 bpd. The capital of the main oil-producing Upper Nile region, Malakal, remains divided between the army and rebels, government officials say.
On Saturday, the national government over-ruled Upper Nile state's plan to partially shut down oil production and evacuate foreign workers after the rebel offensive.
U.S. oil was less affected by global supply interruptions as mounds of light, sweet oil pool in the Gulf Coast refining center, forcing less reliance on imports.
(By Jeanine Prezioso and Elizabeth Dilts; Additonal reporting by Shadi Bushra in London and Manash Goswami in Singapore; Editing by Meredith Mazzilli, Chris Reese, Bernadette Baum and Diane Craft)