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Patent applications and USPTO patent grants for Siem Wis AS.The latest application filed is for "pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof".
Patent | Date |
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Grinding arrangement for tool joints on a drill string Grant 8,997,851 - Edvardsen , et al. April 7, 2 | 2015-04-07 |
Sealing arrangement, and corresponding method Grant 8,985,229 - Edvardsen , et al. March 24, 2 | 2015-03-24 |
Pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof Grant 8,474,253 - Askeland July 2, 2 | 2013-07-02 |
Device and method for maintaining constant pressure on, and flow drill fluid, in a drill string Grant 8,403,034 - Askeland , et al. March 26, 2 | 2013-03-26 |
System and method for dynamic sealing of a drill string Grant 8,100,189 - Edvardson , et al. January 24, 2 | 2012-01-24 |
Seal for a drill string Grant 8,066,062 - Edvardsen , et al. November 29, 2 | 2011-11-29 |
Pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof App 20090211239 - Askeland; Tom Kjetill | 2009-08-27 |
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