Drilling Report

Aminex PLC 2 May 2001 EMBARGOED UNTIL 7.30 A.M. WEDNESDAY 2ND MAY 2001 RELEASE 2 MAY 2001 Aminex PLC, the oil and gas company listed on the London and Dublin Stock Exchanges, announces the successful completion of well K-232 on the Kirtayel field, in the Komi Republic, Russia, which flowed at a rate of 2,100 barrels of dry oil per day on a 15 mm choke (38/64ths') and with a tubing head pressure of 32 atmospheres. Well K-232 was drilled by Aminex's subsidiary AmKomi using a Uralmach 3D drilling rig operated by Russian contractor Geotech but had been subject to delays as a result of local geology and operating conditions,which were overcome by modified drilling techniques. At 2,100 barrels per day, K-232 produced at a much higher initial flow rate than achieved by the two wells previously completed for production by AmKomi at Kirtayel, as announced to shareholders last year. Open-hole log data provided strong evidence for the oil-water contact in K-232 to be substantially deeper than expected. A 23 metre interval of net oil-bearing sand was successfully perforated deeper in the section than the earlier wells, demonstrating producible oil from that depth. Most significant about this result, however, is that it indicates a possible upgrading of Kirtayel's reserves and producing capability. K-232 is now connected to AmKomi's process facilities and is producing at a stable rate of 970 barrels dry oil per day on an 8 mm (20/64ths') choke and with a tubing head pressure of 72 atmospheres. Approximately 25 metres of net oil bearing sand remain available for perforation in the future. Commenting on the release Aminex Chief Executive Brian Hall said: 'The result of this well is one of the most exciting developments that has occurred since Aminex first acquired its interest in AmKomi. The discovery of this zone is a credit to the joint efforts of AmKomi's and Aminex's Russian and western specialists. It is too early to speculate on the additional field potential that the well may be indicating, but it is an extremely positive and encouraging development.' For further information: Brian Hall Chief Executive 020 7240 1600 Clive Ninnes Petroleum Engineering Manager 020 7240 1600 Alexandra Kaledina Investor Relations 020 8308 9561

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