CALGARY, ALBERTA--(Marketwire - April 6, 2011) - Nexen Inc. announces the regular quarterly interest payment on its 7.35% Subordinated Notes due 2043 of US$0.459375 per note, payable May 1, 2011, to note holders of record on April 15, 2011. The notes are listed for trading on the TSX: NXY.PR.U and the NYSE: NXYPRB. Nexen Inc. is an independent, Canadian-based global energy company, listed on the Toronto and New York stock exchanges under the symbol NXY. We are focused on three growth strategies: oil sands and unconventional gas in Western Canada and conventional exploration and development primarily in the North Sea, offshore West Africa and deep-water Gulf of Mexico. We add value for shareholders through successful full-cycle oil and gas exploration and development, and leadership in ethics, integrity, governance and environmental stewardship.

Contact Information: Tim Chatten, P.Eng Analyst, Investor Relations (403) 699-4244 or Kim Woima, CA Manager, Investor Relations (403) 699-5821 or Nexen Inc. 801 - 7th Ave SW Calgary, Alberta, Canada T2P 3P7 www.nexeninc.com