Petroleum Geo-Services ASA : Patent complaint filed

PGS has been informed that WesternGeco has filed a complaint against PGS in
Houston alleging infringement of four patents. These patents were part of the
litigation between WesternGeco and ION Geophysical regarding the DigiFIN
steering device. For the case to continue WesternGeco will also have to take
steps to serve the complaint against PGS.

PGS is of the opinion that WesternGeco's claim against PGS is without merit.

Only two vessels in the PGS fleet are currently equipped with DigiFIN, and PGS
has never used DigiFIN on a seismic survey in US waters.

PGS believes that this claim will at most have limited financial impact for the
Company.



FOR FURTHER DETAILS, PLEASE CONTACT:



Tore Langballe, SVP Corporate Communications
Phone:   +47 67 51 43 75
Mobile: +47 90 77 78 41



Bård Stenberg, Investor Relations Manager
Phone:   +47 67 51 43 16
Mobile: +47 99 24 52 35


This information is subject of the disclosure requirements pursuant to section
5-12 of the Norwegian Securities Trading Act.


[HUG#1729788]