Algeria Declaration of Commerciality

Dublin

9 August, 2012

Declaration of Commerciality for the Ain Tsila field, Algeria

Petroceltic International plc ("Petroceltic" or "the Company"), the upstream oil and gas exploration and production company focused on North Africa, the Middle East and the Mediterranean, is pleased to announce that the parties to the Isarene Production Sharing Contract (the "PSC") have agreed a Formal Declaration of Commerciality in respect of the Ain Tsila natural gas field situated in the Illizi Basin of Algeria.

The Final Discovery Report (field development plan), submitted in January 2012, along with the Declaration of Commerciality and supporting documentation will now be passed to the Algerian Competent Authorities. Following their approval, the PSC parties will be granted a 30 year exploitation permit for the Ain Tsila field. Petroceltic holds a 56.625% working interest in this development, with Enel holding 18.375% and Sonatrach 25%.

The field was formally declared commercial on completion of an agreement for Sonatrach to market all of the produced gas from the Ain Tsila field, using a formula linked to Brent oil pricing. The PSC partners estimate the field to contain gross resources of 2.1 tcf of sales gas, 67 mmbbl of condensate and 108 mmbbl of LPG. Development work is expected to commence in 2014 and first gas is planned for the third quarter 2017, initially from an estimated 18 vertical wells produced through a new gas processing plant at an annual average wet gas plateau rate of 355 million standard cubic feet/day (10.05 million standard cubic metres/day). The plateau length is 14 years and an additional 106 development wells are estimated to be required during the period to maintain this production plateau.

Brian O'Cathain, Chief Executive of Petroceltic commented:

"The declaration of commerciality on the AinTsila field is a major milestone for Petroceltic and our partners Sonatrach and Enel. This is a critical step towards formally recognising the reserves on this substantial field and our asset team is now focusing on planning for the development phase of the project."

Ends

For further information, please contact:

Brian O' Cathain/Tom Hickey, Petroceltic International Tel: +353 (1) 421 8300

Philip Dennis/Rollo Crichton-Stuart,

Pelham Bell Pottinger Tel: +44 (20) 7861 3919

Joe Murray / Joe Heron, Murray Consultants Tel: +353 (1) 4980300

John Frain, Davy Tel: +353 (1) 679 6363

Dr. Dermot Corcoran, Head of Exploration, Petroceltic International plc, is the qualified person who has reviewed and approved the technical information contained in this announcement. Dr. Corcoran has a B.Sc in Geology, a M.Sc. in Geophysics, and a Masters degree in Business Administration, all from the National University of Ireland, Galway. He also holds a Ph.D in Geology from Trinity College, Dublin. Dr. Corcoran has over 20 years experience in oil & gas exploration and production, and has previously worked at ExxonMobil, the Petrofina Group, and Statoil.

Notes to Editors:

Petroceltic International plc is a leading Upstream Oil and Gas Exploration and Production Company, focused on North Africa, the Middle East and the Mediterranean, and listed on the London Stock Exchange's AIM Market and the Irish Stock Exchange's ESM Market. The Company has exploration and appraisal assets in Algeria, the Kurdistan Region of Iraq and Italy.