Acquisition

Sondex PLC
04 November 2004

Sondex plc

Sondex acquires rights to well test production technology

Sondex plc, the British oilfield technology company, has acquired the patents
and technology associated with a novel well test production logging (WTPL)
methodology for €300,000.

The agreement has been made with Geo Energy s.a, a French research organisation
that has pioneered the development to date of this important new technique.
Sondex has agreed to take over the entire responsibility for this project with
the intention of accelerating the commercial release of the technology.

Well test production logging allows an assessment of the production capability
of an oil or gas reservoir to be made from within a producing well without
interrupting production or deploying costly equipment.  This will enable an
operator to assess in a cost effective manner the current and future oil
reserves in maturing oil and gas fields.

Sondex will design and develop variations to its existing production logging
tools to perform the well testing. A major oil service company and a leading
international energy group have been sponsoring the development of the
technology and it is anticipated that they will continue their association with
continuing development work. It is expected that these two companies will also
be involved with future field trials and commercialisation.

Martin Perry, Chief Executive of Sondex commented:

"We are very excited by this development, as the technology can be regarded as
potentially game-changing. We look forward to bringing this technology to
commercialisation."

                                                                 4 November 2004

For further information, please contact:

Sondex                                                       Tel:  [phone]
Martin Perry (Chief Executive)
Anika Ephraim                                                [e-mail]


College Hill                                                 Tel:  [phone]
Nick Elwes
Ben Brewerton


RMD Communications                                      Tel: [phone]
Ray Dafter                                                       [e-mail]
                                                             [phone]


Notes to Editors

WTLP

The technique involves introducing small, cyclical modulations of pressure
within the flowing oil or gas well. The resultant phase and amplitude changes in
flow rates are recorded over a range of frequencies at the point where the
fluids enter the well.

Analysis of these readings gives an indication of the 'skin' effect (flow
restriction due to the blocking of pores in the zone close to the wellbore) and
of the permeability ('producibility') of the reservoir or zone of production
under investigation.  The analysis can be used to prescribe appropriate actions
in order to optimise the recovery of remaining oil and gas reserves.

Sondex plc

This acquisition represents a further step by Sondex in the broadening of its
existing product range. Sondex recently completed the £31.5 million acquisition
of Geolink International, the Scotland-based specialist designer, manufacturer
and supplier of Measurement While Drilling (MWD) and Logging While Drilling
(LWD) downhole technology. This followed the acquisition in December of Computer
Sonics Systems Inc ("CSS"), a designer and manufacturer of wireline logging
equipment based in Calgary, Canada.

Sondex now has operations in the UK, Russia, USA, Canada, South America, China,
the Middle East and Australia. In addition to the "at bit" drilling sensors, its
suite of sophisticated tools includes specialist logging equipment, casing
inspection systems for economically extending the life of wells,
data-acquisition systems, electric cutters, and electric tractors for the
deployment of downhole logging tools in highly deviated and horizontal wells.
The electro-mechanical equipment is generally used by international and regional
oilfield service companies on behalf of virtually every major oil and gas
company.


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