Mobile equipment for riserless drilling, well intervention, subsea construction and the like from a vessel

Abstract

A mobile equipment for riserless drilling, well intervention, subsea construction and the like from a dynamic positionable vessel having a moonpool ( 8 ) is comprising two masts ( 1 ) situated at the moonpool ( 8 ), a yoke ( 6 ) extending between and is movably arranged on the masts, a hydraulic topdrive ( 7 ) mounted to the yoke, and a drillfloor ( 3, 4 ) mountable in connection with the moonpool ( 8 ).

1 . Mobile equipment for use during riserless drilling, well intervention, subsea construction and the like from a dynamically positionable vessel with a moonpool, wherein the equipment comprises two masts which are located at the moonpool, a yoke extending between and movably arranged on the masts, a hydraulic top drive mounted on the yoke, and a drill floor mountable in connection with the moonpool. 
   
   
       2 . Mobile equipment according to  claim 1 , wherein the respective mast is arranged on a base. 
   
   
       3 . Mobile equipment according to  claim 2 , wherein the respective mast is made foldable by means of at least one hydraulic cylinder located between the base and the mast. 
   
   
       4 . Mobile equipment according to  claim 3 , wherein the respective mast is connected to the base by a swivel link. 
   
   
       5 . Mobile equipment according to  claim 1 , wherein the respective mast, for movement of the yoke, is in the form of a hydraulic mast cylinder, has a chain or rack drive and the like. 
   
   
       6 . Mobile equipment according to  claim 1 , wherein the yoke is of a width-adjustable type. 
   
   
       7 . Mobile equipment according to  claim 1 , wherein the drill floor is movably arranged on the bases. 
   
   
       8 . Mobile equipment according to  claim 1 , wherein the drill floor is splittable, and that a cut-out is made in the respective half of the drill floor. 
   
   
       9 . Mobile equipment according to  claim 8 , wherein the drill floor comprises an iron roughneck. 
   
   
       10 . Mobile equipment according to  claim 9 , wherein the iron roughneck is movably arranged on the drill floor.