CNQ Canadian Natural Resources Ltd

Canadian Natural Resources Limited (TSX: CNQ) (NYSE: CNQ) ("Canadian Natural" or the "Company") 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(i)
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May 2010                                    81,400(i)
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June 2010 forecast                    116,000-118,000
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(i)rounded to the nearest hundred

The proactive maintenance during May 2010 was successfully completed. This resulted in exceptional reliability and production volumes in June 2010.

The Company targets stable production levels of approximately 110,000 barrels per day of SCO for the remainder of 2010 and will continue to complete strategic maintenance as required resulting in 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: John G. Langille Vice Chairman Steve W. Laut President Corey B. Bieber Vice-President, Finance & Investor Relations Canadian Natural Resources Limited 2500, 855 2nd Street S.W. Calgary, Alberta, T2P 4J8 Canada Phone: (403) 514-7777 Email: ir@cnrl.com Website: www.cnrl.com