HYDROCARBON DYNAMICS LIMITED — Board/Management Information 2011

Apr 17, 2011

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The Manager Company Announcements Office ASX Limited 20 Bridge Street Sydney NSW 2000

18 April 2011

Dear Sir,

RE: Change of Company Name to Pryme Energy Limited

In accordance with ASX Listing Rule 3.1, we advise that Pryme Oil and Gas Limited has changed its Company name to Pryme Energy Limited , effective 18 April 2011, following shareholder approval at the Annual General Meeting held on 18 April 2011.

Please find attached the Certificate of Registration on Change of Name issued by the Australian Securities & Investments Commission.

Yours sincerely,

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Swapna Keskar Company Secretary

For further information please contact:

Justin Pettett Managing Director Pryme Oil and Gas Limited Telephone: +61 7 3371 1103

Ryan Messer Chief Operating Officer Pryme Oil and Gas Limited Telephone: +1 713 401 9806

Website: www.prymeoilandgas.com

ASX Code: PYM

OTCQX Code: POGLY

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