Energean Oil & Gas Regulatory News (ENOG)

For immediate release Monday, 10 September 2018

Energean Oil & Gas plc

("Energean" or the "Company")

US Under Secretary of Energy visits Energean's facilities, offshore Greece

On Sunday, September 9, 2018, Energean (LSE: ENOG) was pleased to host the Honourable Mr. Mark Menezes, the U.S. Department of Energy Under Secretary of Energy, at its offshore facilities in Kavala, Eastern Macedonia, Greece.

The U.S. Delegation was given a tour of the Prinos Oil Field platforms and the Energean owned Energean Force drilling rig, currently drilling an extended reach well into the Epsilon Oil Field, and the GSP Jupiter jack up rig, which is currently drilling the first of three vertical development wells in the Epsilon Oil Field.

After concluding his visit to Prinos, Under Secretary Mark Menezes said:

"Achieving energy security for each of our respective countries is made possible by doing everything we can to embrace energy diversity. The Trump Administration, Secretary Perry, and the U.S. Department of Energy support more robust energy, economic, and security ties with Greece, with southeast Europe, and with the entire continent because a strong, vibrant Trans-Atlantic relationship is vital for all of our nations."

Mr. Dimitris Gontikas, Vice President and Managing Director of Energean Greece, said:

"It was a great honour to host Under Secretary Menezes and his distinguished company at Greece's sole hydrocarbon producing facilities which are owned and operated by Energean, and which have an excellent HSE record. We are proud that through our investment in Prinos Oil Field rejuvenation, our Company has led the way towards a new era in Greece's hydrocarbon history, and supported the Greek State in its decision to expand E&P activity in new areas in Western Greece, the Ionian Sea and offshore Crete."

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About Energean Oil & Gas plc

Energean is a London Premium Listed independent E&P company focused on the Eastern Mediterranean region, where it operates in offshore Israel, Greece and the Adriatic and holds 13 licences. Energean has 349 mmboe of 2P reserves and 48 mmboe of 2C resources across its portfolio.

In August 2017 the Company received Israeli Governmental approval for the FDP for its flagship Karish-Tanin gas development project, where it intends to use an FPSO and produce first gas for the Israeli market in 2021. In Greece, the Company is pursuing an ongoing investment and development programme to increase production from its Prinos and Prinos North oil fields and to develop the Epsilon oil field, located in the Gulf of Kavala, Northern Greece.

Energean has five exploration licences offshore Israel, and a 25 year exploitation licence for the Katakolo offshore block in Western Greece and additional exploration potential in its other licences offshore Western Greece, and Montenegro.

1) Gas is converted into mmboe using the Society of Petroleum Engineers approved conversion factor of 5658.53 scf/boe

www.energean.com