CNQ Canadian Natural Resources Ltd

Canadian Natural Resources Limited ("Canadian Natural") (TSX: CNQ) (NYSE: CNQ) announces monthly production of Synthetic Crude Oil ("SCO") at Horizon Oil Sands as follows:

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Month            SCO Production (bbl/d)
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Q1 2010                          86,995
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April 2010                  101,000 (1)
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May 2010 forecast         75,000-80,000
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(1) rounded to the nearest hundred

May 2010 production is expected to be between 75,000 and 80,000 barrels per day of SCO due to a planned maintenance outage which reduces May's volumes but is forecast to limit future operational issues and help reach and maintain sustained production levels.

The Company continues to target stable production levels with annual production guidance for 2010 remaining at 90,000 to 105,000 barrels per day of SCO at Horizon Oil Sands.

Canadian Natural is a senior crude oil and natural gas production company, with continuing operations in its core areas located in Western Canada, the U.K. portion of the North Sea and Offshore West Africa.

Contacts: Canadian Natural Resources Limited Allan P. Markin Chairman (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited John G. Langille Vice-Chairman (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited Steve W. Laut President (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited Tim S. McKay Chief Operating Officer (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited Douglas A. Proll Chief Financial Officer & Senior Vice-President, Finance (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited Corey B. Bieber Vice-President, Finance & Investor Relations (403) 514-7777 (403) 514-7888 (FAX) Canadian Natural Resources Limited 2500, 855 - 2nd Street S.W. Calgary, Alberta T2P 4J8 ir@cnrl.com www.cnrl.com