OMV Petrom to operate Neptun Deep if Exxon exits Apr 23, 2021 7:10:am Summary ExxonMobil has been seeking a buyer for its stake in the Romanian offshore project for nearly two years. by: Joseph Murphy Posted in: OMV Petrom to operate Neptun Deep if Exxon exits Austro-Romanian oil firm OMV Petrom reported on April 23 that it would serve as operator of the Neptun Deep gas discovery off Romania if the country's state-owned Romgaz replaces ExxonMobil as the other partner in the project. ExxonMobil currently operates the 84bn-m 3 undeveloped gas field with a 50% interest, while OMV Petrom controls the remaining 50%. But the US major is scaling back its upstream activities in Europe and has been seeking a buyer for its stake in Neptun Deep for almost two years. Romgaz filed a binding offer to acquire Exxon's stake at the start of this month.