mauritania offshore drilling update

Mauritania Offshore Drilling Update
lling UpdateWoodside Mauritania Pty. Ltd., a wholly-owned subsidiary of Woodside Petroleum Ltd., reports the
following activity offshore Mauritania since the last report issued on 20 September 2005.
PSC Area B: Tevét-2 Combined Appraisal and Exploration Well
The ‘Stena Tay’ rig drilled the Tevét-2 well to a depth of 2,785 metres. Wireline logs, including fluid
sampling and downhole pressure measurements, were acquired over the Miocene appraisal
objective, where oil and gas was discovered in the Tevét-1 well. A preliminary evaluation of these
data and data acquired while drilling has established that the well intersected a gross gas interval
of approximately 1.5 metres above a gross oil interval of approximately 37 metres.
Whilst the hydrocarbon sands are of a similar thickness to those discovered in the Tevét-1 well, the
amount of reservoir sand is less than expected. Further studies will be required to determine the
significance of the Tevét-2 result.
At midnight on 26 September 2005, preparations were underway to drill to the next casing point.
The well will then target a deeper exploration prospect. The planned total depth of the well is
approximately 3,965 metres.
Chinguetti Development Wells
The 'West Navigator’ drillship continues to perform completion work on Chinguetti Development
wells. Woodside does not plan to issue regular announcements regarding operations on Chinguetti
development wells but will do so if necessary to comply with its continuous disclosure obligations
under the ASX Listing Rules.
General
All reported drilling depths are referenced to the rig rotary table and all times are Universal Time
(UTC) (Mauritanian time).
The locations of planned exploration wells and the Chinguetti Oil Field are shown on the attached
map