BRIEF-Subsea 7 wins $300 mln deal from BP

OSLO, Oct 12 (Reuters) - Subsea 7 :

* Announces contract extension with in North Sea

* Says contract extension is valued at approximately US$300M and will run from

2013 until 2017(Reporting by Oslo newsroom) ((gwladys.fouche@thomsonreuters.com; +47 22 93 6977; Reuters messaging: gwladys.fouche.reuters.com@reuters.net))