SDRL - Seadrill secures a two-year contract extension for the ultra-deepwater semi-submersible rig West Aquarius

 Hamilton, Bermuda, November 17, 2011 - Seadrill has been awarded a two-year extension for the ultra-deepwater semi-submersible rig West Aquarius which is currently operating in Asia under a worldwide contract for ExxonMobil. It is anticipated that the extension period will primarily involve operations in the North Atlantic area. An estimated period of 106 days will be required to mobilize the rig and prepare for operations which will be in addition to the firm extension period. The expected revenue potential for the contract extension is estimated at US$422 million, including US$35 million for the mobilization and operational preparation period. Furthermore, ExxonMobil has the option to extend the contract period further for of up to two years. This information is subject of the disclosure requirements pursuant to section 5-12 of the Norwegian Securities Trading Act. This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Seadrill Limited via Thomson Reuters ONE [HUG#1564590]