* Spot activity has been limited this week as traders
focused on attending International Energy Week events in London.
* Angola's state oil firm Sonangol was still offering three
April-loading spot cargoes: Girassol at dated Brent plus $3.20,
Cabinda at dated Brent plus $3.00 and Dalia at dated Brent plus
20 cents a barrel, a trader said.
* Nigerian crude was heard to be in ample supply,
potentially weighing on differentials.
* Higher Nigerian output has helped boost OPEC output in February, surveys from Reuters and Bloomberg found this week. (Reporting by Alex Lawler; Editing by Elaine Hardcastle)
Messaging: alex.lawler.reuters.com@reuters.net))W Africa Asia crude exports, monthly New African oilfields speed guide crude speed guide
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