The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2002
Filed:
Nov. 29, 1999
Applicant:
Inventor:
Svein Gleditsch, Harstad, NO;
Assignee:
Mercur Slimhole Drilling and Intervention AS, Sandnes, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63B 3/544 ; E21B 4/104 ;
U.S. Cl.
CPC ...
B63B 3/544 ; E21B 4/104 ;
Abstract
The present invention relates to an arrangement in a floating drilling and intervention vessel, for controlling a heave compensated drill floor suspended in drill floor compensator cylinders . Below the compensated drill floor there is installed a tidal structure ( ) suspended in tidal cylinders or wires . By adjusting the tidal cylinders or the wires in step with the tide it is achieved that the drill floor compensator cylinders can operate around their middle position regardless of the tide lifting or lowering the vessel