C.A.T. oil´s subsidiary named winner in major tender for sidetracking operations

• C.A.T.oil’s subsidiary CATOBNEFT has been awarded winner of major
tender for side tracking operations with TNK-BP
• One third of
C.A.T. oil’s current sidetracking capacities locked up for three
years.

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Vienna (euro adhoc) - Vienna, December 13, 2007. C.A.T. oil AG (O2C,
ISIN AT 0000A00Y78), one of the leading providers of oil and gas
field services in Russia and Kazakh-stan, has been announced winner
through its operating subsidiary CATOB-NEFT in a major tender for a
3-year sidetracking contract with TNK-BP, one of Russia´s largest oil
and gas groups. C.A.T. oil is going to render sidetracking services
for TNK-BP at Samotlor field, one of the largest oil fields in the
world located in the West Siberian re-gion of Nizhnevartovsk.
Following a steep fall in Samotlor´s crude production from the 1980s
peak of 3 million barrel per day down to 335 thousand barrels per day
in 1996, TNK-BP has undertook a grand scale reconstruction to
bol-ster the asset output to approximately 700 thousand barrels per
day by 2010. Apart from sidetrack drilling, C.A.T. oil provides
hydraulic fracturing, workover and remedial cementing services at
Samotlor under the field´s rehabilitation plan. The tendered work
load amounts to a revenue of around EUR 30 million per year and locks
up C.A.T. oil´s three sidetrack drilling rigs or 30% of the
Com-pany´s current total sidetrack drilling capacity for three years.
The contract is expected to be sealed at the end of this year or at
the begin-ning of 2008 at the latest. "At this point, sidetrack
drilling is C.A.T. oil´s fastest growing business line, which will
massively contribute to the Company´s top and bottom line growth next
year and beyond. Therefore, it is hard to overvalue the tender
results, which recognize C.A.T. oil´s ability to respond swiftly to
the market demands and build up highly competitive service for its
customers within a short period of time" - said Leonid Mirzoyan, CCFO
of C.A.T. oil AG.

About C.A.T. oil AG: Austria-based C.A.T. oil AG (O2C, ISIN:
AT0000A00Y78) is one of the leading provid-ers of oil- and gasfield
services in Russia and Kazakhstan. C.A.T.oil´s core business is
hydraulic fracturing, a process which helps to open up oil- and
gas-bearing rock for-mations in order to increase or even enable oil
and gas production. The C.A.T.oil crews use state-of-the-art methods
and technologies to generate high pressure in the oil or gas
reservoirs concerned. This pressure causes cracks to appear in the
rock through which oil or gas can be produced in larger quantities
from the production well, and hence efficiently boosts extraction,
particularly in the case of deposits that are difficult to develop or
low-output wells. In addition, hydraulic fracturing can be used to
revitalize wells that have previously been idle. The Company has its
headquarters in Vienna and employs appr. 3,000 people, most of whom
are based in Russia and Kazakhstan. Customers include leading oil and
gas producers such as Gazprom, KazMunaiGaz, LUKOIL, Rosneft, and
TNK-BP. C.A.T.oil has been listed in the Prime Standard of the
Frankfurt Stock Exchange since May 4, 2006, and has been a member of
the SDax since September 18, 2006.

end of announcement euro adhoc
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ots Originaltext: C.A.T. oil AG
Im Internet recherchierbar: http://www.presseportal.de

Further inquiry note:

A&B Financial Dynamics

Dr. Lutz Golsch

phone: +49 (0)69 92037-110

Email: l.golsch@abfd.de

Carolin Amann

phone: +49 (0)69 92037-132

c.amann@abfd.de

Branche: Oil & Gas - Upstream activities
ISIN: AT0000A00Y78
WKN: A0IKWU
Index: SDAX, Classic All Share, Prime All Share
Börsen: Börse Frankfurt / regulated dealing