Part I DESIGNATED OWNERS

Blackfriars Oil and Gas Ltd., whose registered office is at Carmelite House, Carmelite Street, London EC4Y 0JA.

Elf Oil and Gas Ltd., whose registered office is at 197 Knightsbridge, London SW7 1RZ.

Hamilton Brothers UK Petroleum Corporation, whose principal place of business in the United Kingdom is at Devonshire House, Piccadilly, London W1X 6AQ.

Hamilton Oil GB p.l.c., whose registered office is at Devonshire House, Piccadilly, London W1X 6AQ.

Renown Petroleum Ltd., whose registered office is at 20 Fenchurch Street, London EC3P 3DB.

Texaco North Sea UK Company, whose principal place of business in the United Kingdom is at 1 Knightsbridge Green, London SW1X 7QJ.