HYDROCARBON DYNAMICS LIMITED — Director's Dealing 2008

Aug 6, 2008

Appendix 3Y Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/9/2001.

Name of entity PRYME OIL AND GAS LIMITED

ABN 75 117 387 354

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Justin Pettett
Date of last notice	2 July 2008

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Indirect
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to therelevant interest.	Mr Pettett is a director of Pettett Pty Ltd.
Date of change	6 August 2008
No. of securities held prior to change	Ordinary Shares2,506,925 – Pettett Pty Ltd65,000 – Pettett Family Super Fund$0.20 Options exercisable through 30 June 2009600,000 – Pettett Pty Ltd
Class	Fully Paid Ordinary Shares
Number acquired	80,000
Number disposed	Nil
Value/ConsiderationNote: If consideration is non-cash, provide details and estimatedvaluation	$15,200

• See chapter 19 for defined terms.

Appendix 3Y Page 1

11/3/2002

Appendix 3Y Change of Director’s Interest Notice

No. of securities held after change	Ordinary Shares2,586,925 – Pettett Pty Ltd65,000 – Pettett Family Super Fund$0.20 Options exercisable through 30 June 2009600,000 – Pettett Pty Ltd
Nature of changeExample: on-market trade, off-market trade, exercise of options,issue of securities under dividend reinvestment plan,participation in buy-back	On-market purchase.

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	-
Nature of interest	-
Name of registered holder(if issued securities)	-
Date of change	-
No. and class of securities to whichinterest related prior to changeNote: Details are only required for a contract in relation towhich the interest has changed	-
Interest acquired	-
Interest disposed	-
Value/ConsiderationNote: If consideration is non-cash, provide details and anestimated valuation	-
Interest after change	-

• See chapter 19 for defined terms.

Appendix 3Y Page 2

11/3/2002