BLR Black Rock Oil

RNS Number:0955S
Black Rock Oil & Gas PLC
10 April 2008


For immediate release                                            10 April 2008


                            Black Rock Oil & Gas PLC

                                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, announces that its
joint venture operator, Kappa Resources Colombia Limited ("Kappa") commenced
drilling of the Arrinconada 1 exploration well in the Alhucema E&P Contract in
Colombia on 8th April 2008.


Arrinconada is a low-risk heavy oil prospect on trend with the Acacia Este
Field, which is currently under long-term production test, and the Arce Field.
Other fields on trend include the prolific Chicala and Velasquez fields. The
Directors expect the well to take 20-30 days to drill.


The Directors of Black Rock believe that Arrinconada is one of the better
exploration prospects in the Alhucema E&P Contract and was identified following
the acquisition of 2D seismic in 2006. If Arrinconada is a discovery, Black Rock
will propose to Kappa the implementation of an appraisal programme to prove up
the reserves and potential productivity.


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


"The spudding of Arrinconada has been eagerly awaited as it represents a
potentially high impact exploration prospect. It forms our first attempt to
assess the potential for hydrocarbons in the large Alhucema E&P Contract that
Black Rock farmed into during 2005. If heavy oil shows are identified at this
location, then the well will have confirmed a northwards extension of the heavy
oil petroleum system characteristic of the Las Quinchas Association Contract."


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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