Northern Petroleum Plc

August 14, 2009 08:15 ET

Tiendeveen drilling commences

14 August 2009
                                      Northern Petroleum Plc
                                   Tiendeveen drilling commences
Northern announces that its wholly owned subsidiary Northern Petroleum Nederland B.V ("NPN") has
commenced drilling operations on the exploration well Tiendeveen in the Drenthe III licence on 12
August 2009.

Tiendeveen is sited in the east of The Netherlands, 3.8 kilometers northwest of Northern's
Geesbrug gas field development.  The estimated mean potential gas in place is 60bcf with an upside
P10 potential of 98bcf.  The well is expected to take 50 days to reach 3842m measured depth (about
3500m true vertical depth) and log the well.

Licence and working interests:
NPN: 45%
EBN: 40%
Dyas: B.V. 15%

In  accordance  with the AIM Rules - Guidance for Mining and Oil & Gas Companies, the  information
contained  in this announcement has been reviewed and signed off by the Exploration and  Technical
Director  of Northern, Mr Graham Heard CGeol FGS, who has over 30 years experience as a  petroleum


For further information please contact: 
Northern Petroleum Plc                                 Tel: +44 (0) 20 7469 2900
Derek Musgrove, Managing Director
Sophie Hull, Head of Corporate Communications

Jefferies International                                Tel: +44 (0) 20 7029 8000
Chris Snoxall / Schuyler Evans

Astaire Securities                                     Tel: +44 (0) 20 7448 4400
Jerry Keen / Toby Gibbs

Bishopsgate Communications Limited (Press)             Tel: +44 (0) 20 7562 3350
Nick Rome / Michael Kinirons

Buchanan Communications Limited (Analysts)             Tel: +44 (0) 20 7466 5000
Tim Thompson / Ben Romney

Notes to Editors

Northern  Petroleum Plc ("NOP") is an AIM quoted oil and gas production, development,  exploration
and  asset trading company focused on areas of low political risk in Europe. Quoted on the  London
Stock  Exchange the Company obtains significant concentrated licence positions and adds  value  at
reasonable  risk utilising new ideas together with new drilling, seismic, completion and  computer
technologies where it is believed that economic oil and gas production can be established. Efforts
are concentrated in three countries (Netherlands, Italy and England) with the risk spread over  in
excess  of 50 projects in 12 petroleum systems. It operates on both onshore and offshore  projects
including a producing gas field.

Following the acquisition of ATI Oil Plc, Northern has recoverable Proven and Probable reserves of
approximately  103 million barrels of oil equivalence. It is currently producing gas  at  Waalwijk
and the offshore P12 fields.

The planned development of six onshore oil and gas fields is being progressed with Dyas B.V., EBN,
the Netherlands' state oil company, and NAM as partners.

Northern  manages  the  largest  licensed  exploration  area  in  Italy,  with  over  14,000  km²,
predominantly  offshore, but includes six licences in the Po Valley oil and gas  province  in  the
north of the country.

In  the  UK  Northern  has licences in the south of England where it has a  10%  interest  in  the
production  from the Horndean oil field and a 5% interest in the Avington oil field. It  also  has
planning consents to drill an eastward extension of the Horndean oil field and an exploration well
at Havant. Northern has a 50% interest in these ventures.

For further information on Northern visit

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