Successful Tests of Gas Well in Texas

Aminex PLC 28 January 2000 Aminex successfully tests gas well in Brazoria County, Texas Aminex PLC ('Aminex') the oil and gas development, production and oilfield services group, listed on the Dublin and London Stock Exchanges, today announces that it's wholly owned subsidiary, Aminex USA Inc., has successfully flow tested the Sebesta Gas Unit Well No. 1 on its Southwest Danbury Field in Brazoria County, Texas. The well was tested at the rate of 4.362 MMCF of gas and 237 barrels of oil per day at 2,452 psi on an 18/64ths choke from the Nodosoaria formation at a depth of approximately 10,700 feet (3,260 metres). Absolute open flow was officially calculated at the rate of 40.358 MMCF per day. Aminex has a net interest of 23% in this well, the cost of which is carried by the group's financing arrangement with McAlester Fuel Company. Aminex's partners in the well are Brigham Oil & Gas, L.P. and Lewis and Peat Oil & Gas, Inc.. The Sebesta Gas Unit Well No. 1 is one of several prospects in the Southwest Danbury Field which are scheduled for development on the company's leasehold acreage. The Southwest Danbury Field is one of a 3D delineated group of properties acquired in April 1999. Commenting on the announcement, Brian Hall, Aminex Chief Executive, said: 'Aminex has an aggressive drilling programme in the US and expects to drill 15 wells by mid-year, with further drilling planned for the second half. The programme comprises a number of drilling locations on the company's Vinton Dome property in Calcasieu Parish, Louisiana, including deep tests on Hackberry prospects identified through the recently completed 3D seismic programme. The first two wells of the Vinton Dome programme have now been successfully completed and their results will be announced shortly. In addition, the programme includes the drilling of other prospects on the properties acquired by Aminex in April 1999, as well as the redevelopment programme on the Shoats Creek field adjacent to Vinton Dome which commenced on 19th January 2000. 'Meanwhile, in Russia, Aminex's first Kirtayel development well is approaching total depth. Completion of a second Kirtayel well is underway, the re-entry of a previously drilled discovery well.' For further enquiries: Brian Hall, Aminex PLC 44 171 240 1600 John Evans, Financial Dynamics 44 171 269 7295