Organisation Structure

IOOA is the representative organisation for companies licensed to explore for, and produce, oil and gas in Irish waters. Previously an informal group (the Irish Offshore Operators’ Group), the Association was formally established in 1995. It currently has 15 members representing multinational and Irish companies. IOOA has a number of sub-committees that draw upon key industry experts to inform the work of the Association.

 Did You Know?

Pioneering research work on understanding the geological development of deep water basins has been carried out in Irish academic institutions supported by funding from the petroleum industry.

At IOOA, we work to:

  • Represent the interests of oil and gas companies licensed to operate in the Irish offshore
  • Promote the economic and social contribution of the oil and gas sector in Ireland
  • Facilitate dialogue with key stakeholders on key issues that relate to the oil and gas sector
  • Partner with international counterparts to help maintain appropriate and up-to-date standards for oil and gas exploration
  • Educate about the role of oil and gas in the energy mix, as well as promote and support appropriate research

Key Personnel

Mandy Johnston

Chief Executive

Mandy Johnston is Chief Executive of IOOA. Ms. Johnston has previously held the position of Irish Government Press Secretary, Government Advisor at Department of An Taoiseach, Press Director at the Department of Finance, Dublin City University, The Irish League of Credit Unions and the Football Association of Ireland.  She started up a communications consultancy in 2017 and is a former political columnist for the Irish Independent. She has a strong reputation for developing, managing and executing strategies at the highest levels of Government and business in Ireland and a dynamic record in complex strategic consumer communications and stakeholder campaigns from creation and development phase to delivery.

Tony O'Reilly


Tony O’Reilly is chairman of the Irish Offshore Operators’ Association (IOOA). Mr O’Reilly has been Chief Executive of Providence Resources P.l.c. since 2005, having founded the Company in 1997 and he has served as a Director since its incorporation. He has previously worked in mergers and acquisitions at Dillon Read and in corporate finance at Coopers and Lybrand, advising natural resource companies. He served as Chairman of Arcon International Resources P.l.c. (having been Chief Executive from 1996 to 2000) until April 2005 when Arcon merged with Lundin Mining Corporation. Tony takes up the position, Chair of IOOA, from October 2019. Providence have been members of the IOOA since 1997.

Alan Blacklaw


Alan Blacklaw first began in the oil and gas industry as a graduate engineer at Total in 1990. Since then he held positions of progressive responsibility with Amec and BG Group before joining Nexen in 2012 as General Manager of their UK Operations. In 2017 Alan relocated from Aberdeen to Nexen’s newly opened Dublin office as General Manager. Alan in an engineering graduate from Aberdeen’s Robert Gordon University and is a chartered member of the Institute of Technology. He assumed the role of Secretary of the IOOA in January 2018.

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