BLR Black Rock Oil

RNS Number:3294T
Black Rock Oil & Gas PLC
29 April 2008


For immediate release                                           29 April 2008


                            Black Rock Oil & Gas PLC
                          Arrinconada Drilling Update


Black Rock Oil and Gas PLC ("Black Rock" or the "Company"; stock code: BLR), the
AIM-traded oil and gas exploration and production company, previously announced
that its joint venture operator, Kappa Resources Colombia Ltd ("Kappa")
commenced preparation for drilling of the Arrinconada 1 exploration well in the
Alhucema E&P Contract in Colombia on 8th April 2008.


Following a short drilling program, Arrinconada 1 reached basement at 2222 feet
True Vertical Depth on 20 April 2008. No significant hydrocarbon shows were
recorded whilst drilling the objective formations. The Operator completed
drilling and logging of the well and then abandoned the well on 26 April 2008.
The Joint Venture will now consider the next steps in the exploration of the
Alhucema Block.


The cost of the Arrinconada well was covered under the conditional investment
made by Prospero Hydrocarbons Inc and announced on 4 March 2008.


Dr John Cubitt, Managing Director of Black Rock Oil & Gas plc, commented:


"We are assessing the sonic log from the Arrinconada 1 well in conjunction with
the current 2D seismic grid, and will evaluate the need for additional seismic
to refine structural mapping of the many remaining leads in the large Alhucema E
&P Contract area"



Qualified Person


Dr John Cubitt (a Director of the Company) has been involved in the oil and gas
production industry for more than 28 years. Dr John Cubitt is a registered
Chartered Geologist (CGeol) and has a BSc and PhD in geology. He has compiled,
read and approved the technical disclosure as it relates to Black Rock in this
regulatory announcement.



For further information, please contact:

Black Rock Oil & Gas plc                        01189 001350
Dr John Cubitt, Managing Director               www.blackrockoil.com
                                                ----------------------

Beaumont Cornish                                0207 628 3396
Michael Cornish





                      This information is provided by RNS
            The company news service from the London Stock Exchange

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