Kambuna Update

Serica Energy plc
25 April 2008

                               Serica Energy plc

                          ('Serica' or the 'Company')



                   KAMBUNA FIELD DEVELOPMENT WELLS COMPLETED



London, 25 April 2008 - Serica Energy plc (AIM & TSX-V: SQZ) provides an update
on development activities in the Kambuna field, offshore North Sumatra,
Indonesia.



Serica has completed drilling the Kambuna #4 development well.  Kambuna #4 is a
deviated well drilled from the wellhead platform at the Kambuna #2 location in
the north of the field to a subsurface location 2,180 metres to the south of
Kambuna #2.  It has been drilled to a total depth of 7,408 ft true vertical
depth below mean sea level ('TVDSS').  The well entered the target Belumai
reservoir at a depth of 7,140 ft TVDSS and encountered gas-bearing sands over an
interval of 115 ft with a net pay of 107 ft (66 vertical ft).  The Belumai
reservoir in Kambuna #4 was 26 ft higher than at Kambuna #3.



This completes the drilling phase of the Kambuna development.  Over the next few
weeks, initial production tests will be carried out on the three development
wells and they will then be shut in while the development works continue.  These
works include the installation of an offshore and onshore pipeline and some
onshore production processing facilities.  Production is scheduled to commence
at the end of this year.



Serica expects to achieve an average gas sales price close to US$6.00 per
thousand cubic feet, about 10% higher than that assumed in the reserves report
filed on 28 March 2008 on SEDAR at www.sedar.com.  The reserves report, prepared
before the results of Kambuna #3 and #4 were available, estimates that the field
Proven plus Probable reserves, on a 100% basis, amount to 29.7 million barrels
of oil equivalent.



Serica is the operator of the Kambuna Field and holds an interest of 65% in the
project.



Paul Ellis MA (Oxon) Engineering and Serica's Chief Executive, who has over 35
years' experience in the upstream oil and gas industry, has reviewed and
approved the technical information contained in this announcement.



Enquiries:


Serica Energy plc
Paul Ellis,                           [e-mail]                        [phone]

Chief Executive Officer
Chris Hearne,                         [e-mail]                      [phone]

Finance Director

JPMorgan Cazenove
Steve Baldwin                         [e-mail]                  [phone]

Tristone Capital Limited
Majid Shafiq                          [e-mail]                         [phone]

Pelham Public Relations -UK
James Henderson                       [e-mail]                        [phone]
Alisdair Haythornthwaite              [e-mail]               [phone]

CHF - Canada
Sarah Gingerich                       [e-mail]                                     [phone]



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