* Benchmark Qua Iboe sold near dated plus $1.70 for August
* Nigeria to export 2.13 mln bpd in Aug vs 2.25 mln in July
* July crude exports revised up to highest in 2-1/2 years
* Angolan values assessed lower as Asian buyers stay relaxed
LONDON, June 23 (Reuters) - West African crude oil
differentials diverged on Wednesday with Nigerian grades a
little firmer as Atlantic basin refining margins stayed generous
but Angolan eased as Asian buying stayed relaxed.
Nigerian benchmark Qua Iboe was sold twice at 10-20 cents
above previous deals for July, traders said, reflecting healthy
demand for the fairly light, sweet grades and demand into U.S.
But Asian demand has been muted in recent weeks with several
anticipated buyers via tender either choosing not to buy or
switching away from West African grades to Middle Eastern,
Mediterranean or Asian crudes.
Physical North Sea crudes have moved to a large premium
above Dubai-linked grades this month, making Middle Eastern
crudes much more attractive potentially.
* Provisional programmes show Nigeria will export 2.13
million barrels per day (bpd) of crude oil in August in 72 full
or part cargoes, down slightly from a revised 2.25 million bpd
in 77 cargoes in July, trade sources said. The July figure is
now at the highest monthly average in more than 2-1/2 years
after the insertion of another cargo in early July.
* The additional July Qua Iboe cargo is due to load July 5-6
and is likely to go to Pertamina via an unidentified trader,
* Traders said Exxon appeared to have solved some of its
logistical problems with Qua Iboe after re-routing some of its
crude from the production stream.
* Exxon sold its two earliest August Qua Iboe cargoes,
loading August 1-2 and 9-10, at close to dated BFOE plus $1.70,
traders said, and other cargoes were now also indicated at that
level for later lifting.
* Cabinda: Chevron sold its August 3-4 cargo to Unipec,
traders said after initial selling indications around dated BFOE
minus 30 cents. The deal was probably done around 10 cents below
this level, traders said.
* Dalia: Sonangol sold its August 6-7 cargo to an
undisclosed party, traders said, probably achieving close to
dated BFOE minus $3.00, around 30-40 cents per barrel below the
initial selling indications.
* Traders again Girassol at around minus 50 cents, Nemba at
minus 80-90 cents and Hungo at down to minus $2.80.
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(Reporting by Christopher Johnson; editing by James Jukwey)