LIVEMarkets rolling coverageStarted: April 15, 2026, 12:00 AM EDTUpdated: April 15, 2026, 2:56 PM EDT ExxonMobil and Partners to Start Deepwater Drilling Offshore Greece in 2027 April 15, 2026, 2:54 PM EDT. ExxonMobil (XOM), Energean, and Helleniq Energy will begin deepwater exploratory drilling offshore western Greece in February 2027, using Stena Drilling's advanced vessel capable of drilling up to 35,000 feet. This move targets previously hard-to-reach oil and gas reserves, aiming to reduce Greece's heavy reliance on energy imports. The project follows a prior exploration agreement in Block 2 of the Ionian Sea. XOM currently holds a Zacks Rank #2