Oil prices steadied on Wednesday after Brent pushed towards a nearly five-month high of $70 a barrel on OPEC-led supply cuts and U.S. sanctions, with gains capped by a surprise increase in American inventories.
Brent futures had moved up 24 cents, or 0.35 percent, to $69.61 by 1220 GMT. They earlier reached $69.96 - the highest since Nov. 12, when they last traded above $70.
U.S. West Texas Intermediate crude rose a cent to $62.59, having briefly hit $62.99, the highest since Nov. 7.
"The psychologically important $70 a barrel threshold has proved a tough nut to crack for the Brent benchmark over the past few weeks," PVM oil broker Stephen Brennock said.
"Underpinning this latest bout of upward pricing pressures is the positive afterglow from surveys pointing to another sizeable fall last month in OPEC output. Reduced supplies from the producer group will go a long way to cementing the tighter fundamental backdrop."
Oil prices have been supported for much of 2019 by efforts by the Organization of the Petroleum Exporting Countries and allies such as Russia, who have pledged to withhold around 1.2 million barrels per day (bpd) of supply this year.
Supply from OPEC countries hit a four-year low in March, a Reuters survey found this week.
Oil production from Russia fell to 11.3 million bpd last month, but missed the country's target under the supply deal.
"We assume that OPEC crude oil production will average 30.1 million bpd in 2019 ... down from 31.9 million bpd in 2018," BNP Paribas said in a note, reducing an earlier forecast for this year by 200,000 bpd.
In a sign that supply may tighten further, a U.S. official said on Tuesday that three of eight countries granted waivers by Washington to import oil from Iran had cut such purchases to zero, adding that improved oil market conditions would help reduce Iranian crude exports further.
But despite also being under U.S. sanctions, Venezuela's state-run energy company, PDVSA, kept oil exports near 1 million bpd in March, PDVSA documents and Refinitiv Eikon data showed.
U.S. crude stocks rose unexpectedly last week, while gasoline and distillate inventories declined, the American Petroleum Institute said late on Tuesday.
Official numbers from the U.S. government's Energy Information Administration (EIA) are due later on Wednesday.
Commerzbank said in a note that the EIA could further revise down U.S. production, after the agency last put January output at 11.9 million bpd, down 100,000 bpd from the previous month.
(Reuters, By Noah Browning, Additional reporting by Aaron Sheldrick; Editing by Dale Hudson)
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