Operational Update

Cardinal Resources plc 20 September 2006 CARDINAL RESOURCES PLC ANNOUNCES OPERATIONAL UPDATE LONDON - Wednesday, 20th September 2006 Cardinal Resources plc (AIM:CDL) ('Cardinal' or 'the Company'), an independent oil and gas production and exploration company operating in Ukraine, today announces an operational update. The Dubrivska (DB) #2 exploratory well has been drilled to a total depth of 3,806 metres with the primary objective of testing a potential carbonate reservoir in the Visean Carbonate Plate. Work on this well was started by Rudis Drilling Company in June of 2005 prior to its acquisition by Cardinal in October 2005. It was drilled using Ukrainian equipment with total depth reached in March 2006. The well, which is covered by a 50/50 joint activity agreement (JAA #429) with Ukrgazvydobuvannya (Ukrgaz), encountered encouraging hydrocarbon indications within the Carbonate Plate; however, tests of the primary objective recovered non-commercial quantities of light oil. A secondary objective in the Visean-19 (V-19) formation between 3,420 and 3,430 metres was also tested with encouraging indications of gas and condensate. Tests to date of the V-19 have produced at an undetermined rate a mixture of gas, condensate and water, with water dominating. Log analysis indicates that the V-19 is hydrocarbon bearing and Cardinal believes the water is most likely coming from a water-bearing sand below the V-19. With the presence of hydrocarbons on the Dubrivska licence confirmed by the DB # 2 well, Cardinal has begun a 3-D seismic survey covering approximately 25 square kilometres on the licence, the results of which should be available by spring 2007. The seismic will be evaluated in conjunction with the V-19 and Carbonate Plate hydrocarbon indications to decide whether further drilling on the licence should take place. The DB #2 well has been temporarily abandoned pending the results of the 3-D survey. An agreement has been made with Ukrgaz to take wells #18 and #26 on the Kulickykhin Field out of JAA #429 and return them 100% to Ukrgaz. Production at these wells has declined significantly since the beginning of the year - July production averaged 42 boepd versus 256 boepd in February. In return, Ukrgaz has verbally agreed to complete the North Yablunivska (NY) workovers of wells #201, #203 and #300 at their expense. The workover of NY #203 is ongoing. Well #4 on the North Yablunivska (NY) licence, which is covered by JAA #429, has spudded. The objective is the Tournaisian 1 (T-1) reservoir and total depth is to be 5,400 metres. The well is being drilled with a Ukrainian rig hybridised with modern drill bits and mud conditioning equipment. Cardinal will release its interim results on Wednesday, 27th September. Cliff West, Executive Vice President and Chief Operating Officer of Cardinal (Member of the American Association of Petroleum Geologists - Certified Petroleum Geologist # 1563) is the qualified person that has reviewed and approved the technical information within this press announcement. Glossary of Terms boepd barrels of oil equivalent per day ### For further information please contact: Cardinal Resources Parkgreen Communications Kate Spiro Justine Howarth / Victoria Thomas +44 (0) 20 7936 5258 +44 (0) 20 7493 3713 kspiro@cardinal-uk.com victoria.thomas@parkgreenmedia.com Notes to Editor Cardinal Resources plc Cardinal Resources plc is an independent oil and gas company engaged in the acquisition, development, production and exploration of oil and natural gas properties in Ukraine. Cardinal is an experienced operator in the country focused on expanding its existing operations through the farm-in or acquisition of additional upstream oil and gas assets that can be further developed through the application of modern technology and expertise. Cardinal's main assets are: Rudivsko-Chernovozavodske (RC) Field Rudivsko-Chernovozavodske is a large under-developed gas field (1.54 TCF original gas in place), located in the Dnieper-Donets basin, 200km east of Kiev in the Poltava Oblast. Cardinal has a Joint Activity Agreement (JAA) with a subsidiary of Ukrnafta for production and further development. Bytkiv-Babchenske (Bytkiv) Field Bytkiv-Babchenske is an oil field, located in the Carpathian fold belt, 45km south-west of Ivano-Frankivsk in the Nadvirna Oblast. Cardinal has a 45% interest through UkrCarpatOil, a Joint Venture (JV) with Ukrnafta, to operate and develop the field. Plus the following assets which were acquired as part of the Rudis Drilling Company transaction in 2005: Bilousivsko-Chornukhinska (BC) Licence Bilousivsko-Chornukhinska is a producing gas-condensate licence in the Dnieper-Donets basin, owned and operated by Cardinal. North Yablunivska (NY) Licence North Yablunivska is a producing gas-condensate licence in the Dnieper-Donets basin, owned by Cardinal and operated under the JAA. Dubrivska (DB) Licence Cardinal has drilled an exploration well as part of the JAA with Ukrgazvydobuvannya. Ukrgazvydobuvannya JAA #429 Cardinal has a 50% percent interest in a JAA with Ukrgazvydobuvannya which covers certain wells on the NY licence area and one well in the Bilskie field. This release may contain certain forward-looking statements. These statements relate to future events or future performance and reflect management's expectations regarding Cardinal's growth, results of operations, performance and business prospects and opportunities. Such forward-looking statements reflect management's current beliefs, are based on information currently available to management and are based on reasonable assumptions as of this date. No assurance, however, can be given that the expectations will be achieved. A number of factors could cause actual results to differ materially from the projections, anticipated results or other expectations expressed in this release. While Cardinal makes these forward-looking statements in good faith, neither Cardinal, nor its directors and management, can guarantee that the anticipated future results will be achieved. This information is provided by RNS The company news service from the London Stock Exchange
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