HYDROCARBON DYNAMICS LIMITED — Capital/Financing Update 2022

Apr 28, 2022

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29 April 2022

Supplementary Cooper Basin Order Announcement

Hydrocarbon Dynamics Limited (“HCD”) ( ASX:HCD ) announced on 26 April 2022 that it has been awarded the chemical treatment business for 30 wells with receipt of a follow-up order from a large Australian oil and gas producer in the Cooper Basin. The order followed a successful trial on 3 wells in 2021.

At the request of the Australian Securities Exchange, and in accordance with section 4.15 of Guidance Note 8, HCD advises that the order was received from Santos Limited.

Approved by the board of Directors.

For further information please contact:

Stephen Mitchell Chairman

Julie Edwards Company Secretary

Telephone: +61 3 9642 2899 Website: www.hydrocarbondynamics.com ASX code: HCD

ABN: 75 117 387 354 Tel: +61 3 9642 2899 | Fax: +61 3 9642 5177 Level 6, 412 Collins Street, Melbourne VIC 3000 Australia