Nexen Inc.

CALGARY, ALBERTA -- (Marketwire) -- 09/27/10 -- In the first quarter of this year, we made a significant discovery in the deep-water Gulf of Mexico at Appomattox, located in Mississippi Canyon blocks 391 and 392. Drilling activities resulted in an oil discovery with excellent reservoir quality following an exploration well and two appraisal

CALGARY, ALBERTA -- (Marketwire) -- 09/24/10 -- Nexen Inc. announces that hook-up and commissioning of the fourth platform at Buzzard in the North Sea is progressing well and start-up activities are being advanced from early next year to take advantage of cost efficiencies. As a result, start-up of the new platform will commence in October and

CALGARY, ALBERTA -- (Marketwire) -- 09/08/10 -- Nexen Inc. announces that Una Power, Senior Vice President - Corporate Planning & Business Development, will present at the following investor conferences:

Peters & Co. Limited North American Oil & Gas Conference - Toronto, Ontario
Date:  Tuesday, September 14, 2010
Time:  10:45 a.m. Mountain Time

CALGARY, ALBERTA -- (Marketwire) -- 07/22/10 -- Nexen Inc. announces that it has closed the sale of its heavy oil properties in Western Canada to Northern Blizzard Resources Inc. for $975 million (before closing adjustments and costs). These properties produced approximately 15,000 boe/d in the second quarter and had proved reserves of 39 million