ExxonMobil's FLEXICOKING Technology Selected by Hellenic Petroleum for Refinery Upgrade.

FAIRFAX, Va. -- ExxonMobil Research and Engineering Company (EMRE) and Hellenic Petroleum S.A. (HELPE) announced today that HELPE has selected EMRE's FLEXICOKING(1)technology for converting vacuum residue to lighter products for a refinery upgrading project in Elefsis, Greece.

This 20 kBPD unit will be based on proven FLEXICOKING(1)technology which incorporates numerous significant upgrades developed and commercially applied to existing FLEXICOKING(1)units.

FLEXICOKING, first developed and commercially applied 30 years ago, integrates fluid bed coking and air gasification to eliminate petroleum coke production. It allows refiners to process vacuum resid, atmospheric resid, oil sands bitumen, heavy whole crudes, deasphalter bottoms, or thermal cracked tar to produce higher-value liquid and gas products. FLEXICOKING produces a clean low sulfur fuel gas which can be used economically in refinery furnaces and boilers, as well as by nearby consumers such as power plants, to minimize NOx and SOx emissions. It is particularly attractive in markets with limited coke demand combined with high-priced natural gas or fuel.

EMRE is the research and engineering arm of Exxon Mobil Corporation, a leading global oil, natural gas, and petrochemicals company whose subsidiaries have operations in nearly 200 countries and territories. Additional information regarding ExxonMobil and technologies it licenses can be found at http://www.exxonmobil.com/refiningtechnologies.

Hellenic Petroleum S.A. is the leading Greek Refining & Marketing Company, with three of the four refineries in Greece and 73% of the local oil products demand. It operates the first private CCGT power plant in Greece and has a 35% share in DEPA, the gas pipeline and supply company. It is involved in petroleum products marketing in Cyprus, Serbia, Bulgaria, Montenegro, Albania and Georgia. For more information go to http://www.hellenic-petroleum.gr.

Note to Editor: (1)FLEXICOKING is a trademark and proprietary process name of Exxon Mobil Corporation or its affiliates.