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Energean hopes for major discovery off western Greece, says CEO

Published by Global Banking & Finance Review

Posted on April 15, 2026

2 min read

· Last updated: April 16, 2026

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Energean hopes for major discovery off western Greece, says CEO
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ATHENS, April 15 (Reuters) - Oil and gas producer Energean will aim for a big discovery of hydrocarbons off western Greece where the first test drilling could take place as early as next year, CEO

Energean Seeks Major Hydrocarbon Find Off Western Greece With Deep-Sea Drilling

Energean's Deep-Sea Drilling Initiative in Western Greece

Background and Strategic Partnerships

ATHENS, April 15 (Reuters) - Oil and gas producer Energean will aim for a big discovery of hydrocarbons off western Greece where the first test drilling could take place as early as next year, CEO Mathios Rigas said on Wednesday.

ExxonMobil last year joined Energean and Greece's biggest oil refiner Helleniq Energy to explore for natural gas in the Ionian Sea as the United States seeks a growing role in helping Europe replace much of the Russian gas following Moscow's invasion of Ukraine.

Statements from Energean Leadership

"We are aiming for a big discovery but it will mean nothing if the first drilling is not successful," said Rigas in a ceremony in Athens where Energean mandated Sweden's Stena Drilling to drill the first well.

Details of the Drilling Project

Block 2 and Drilling Timeline

The drilling in Block 2, an area extending across 1,000 square kilometres, is the first deep-sea test drilling in Greece in almost 40 years and could take place in February 2027 once permits are secured, Rigas said.

Potential Reserves and Success Probability

The "Asopos" structure could carry recoverable deposits of gas and oil of 6-7 trillion cubic feet and the likelihood of success was about 16%, he added.

Development and Infrastructure Plans

"The chances are very good," he said, adding that the development would involve a floating offshore facility to link subsea wells to Greece and Italy.

Implications for Greece and Europe

Greece now produces only very small quantities of oil and any discovery of gas will help the country cover both domestic demand and start exporting to Europe.

(Reporting by Angeliki Koutantou; Editing by Janane Venkatraman)

Key Takeaways

  • The venture could tap recoverable hydrocarbons estimated at up to 9.5 trillion cubic feet (~200 bcm), though success odds remain modest (15–18%).
  • Block 2 covers over 2,400 km²; ExxonMobil holds 60%, Energean 30% and Helleniq Energy 10%, with Energean operating exploration stage.
  • A successful discovery would boost Greece’s energy independence and position it as an exporter to Europe, aligning with EU efforts to wean off Russian gas.

Frequently Asked Questions

What is Energean planning off western Greece?
Energean is planning test drilling for hydrocarbons off western Greece, aiming for a major discovery that could boost domestic gas supply and exports.
When could the first test drilling begin?
The first deep-sea test drilling could take place as early as February 2027, pending permit approvals.
Who are Energean's partners in this exploration?
Energean is partnered with ExxonMobil and Helleniq Energy for natural gas exploration in the Ionian Sea.
How much gas could the Asopos structure hold?
The 'Asopos' structure could contain recoverable deposits of gas and oil totaling 6-7 trillion cubic feet.
What is the significance of this project for Greece?
A successful discovery could help Greece meet domestic energy needs and enable gas exports to Europe.

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