By Libby George and Amanda Cooper
LONDON (Reuters) - The world is awash with oil, but in pockets of the market lower-quality, sulphur-rich crude is limited and buyers are competing for cargoes.
Lacklustre gasoline demand growth, particularly in the United States, and fears of a repeat of last year's poor summer gasoline profits, led refineries in the Atlantic Basin to skew their yields in favour of distillates, by running heavier oil. Strong profits for fuel oil has also encouraged refineries to run sour crudes.
This has compounded supply cuts, which were concentrated in heavier oils, to keep sulphur-rich crudes, normally shunned for lighter, easier-to-process alternatives, at the top of the heap.
Since OPEC-organised cuts began siphoning some 1.8 million bpd from the market in January - nearly all of it medium and heavy oil - the so-called "heavy" or "sour" grades have become the most sought-after barrels.
Normally, refineries would snap up easier to process light grades before the summer, when they aim to run the gasoline-rich crude so they can sell the fuel to holidaying drivers. But now, in the middle of July, sour grades are still so sought after that differentials are hitting multi-year highs.
Differentials for Urals, a sour grade exported from the Baltics and the Black Sea, are trading at their highest level versus dated Brent in two years, while light grades nearby such as CPC Blend and Azeri are at two-year lows.
North Sea Ekofisk, a light crude coveted for its high gasoline yield, is also trading at its largest discount to sour Forties in two years, as are differentials for Angola's Cabinda. Despite a summer slowdown in loadings for China, a key buyer of Angolan oil, U.S. and Indian loadings rose to their highest in roughly a year, according to Reuters tracking.
At the same time new and sophisticated refineries in India and China - designed to run sulphur-rich crudes - are ramping up production. India's IOC bought its first sour crude oil cargo from the U.S. last week.
Ul-Haq added that since refineries are poised to start producing heating oil for winter demand, refineries could look for even more sour oils, threatening more tightness.
Still, Ul-Haq added, the sour premiums are limited comfort to those selling the oil, including Saudi Arabia, Venezuela and Angola.
"The Saudis should be happier than Nigerians but a price below $60 per barrel is still a headache," he said.
Benchmark Brent crude was below $48 a barrel on Thursday.
(Reporting by Libby George and Amanda Cooper; additional reporting by Florence Tan in Singapore and Julia Payne in London; editing by Susan Thomas)
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