Riser assembly from a vessel and on a seabed

Abstract

A riser assembly for transporting a fluid from a vessel and on a seabed includes an elongate frame having a first frame end and a second frame end, where the first frame end is connected to the seabed and the second frame end is connected to a buoy, at least one riser for transporting a fluid and connecting the at least one riser to the second frame end and/or the buoy.

1 - 134 . (canceled) 
     
     
         135 . A riser assembly for transporting a fluid, said riser assembly comprising:
 an elongate frame comprising a first frame end and a second frame end, wherein the first frame end is connected to a seabed and the second frame end is connected to a buoy, and   at least one riser for transporting a fluid, wherein the at least one riser is connected to the second frame end or the buoy.   
     
     
         136 . The riser assembly according to  claim 135 , wherein the at least one riser is connected to the second frame end at a location near the circumference of the buoy and outside the buoy. 
     
     
         137 . The riser assembly according to  claim 135 , wherein the at least one riser is connected to the buoy at a location near the circumference of the buoy and outside the buoy. 
     
     
         138 . The riser assembly according to  claim 135 , wherein the at least one riser is connected to the second frame end and the buoy. 
     
     
         139 . The riser assembly according to  claim 135 , wherein the elongate frame comprises a longitudinal frame axis. 
     
     
         140 . The riser assembly according to  claim 139 , wherein the riser assembly comprises multiple risers which are connected to the second frame end or the buoy such that said risers surround the longitudinal frame axis of the elongate frame. 
     
     
         141 . The riser assembly according to  claim 139 , wherein the at least one riser is held by the frame such that the at least one riser is movable in the direction of the longitudinal frame axis of the frame. 
     
     
         142 . The riser assembly according to  claim 135 , wherein the at least one riser is suspending from a support device provided on the second frame end or the buoy. 
     
     
         143 . The riser assembly according to  claim 139 , wherein the at least one riser is held by the frame such that the movement of the at least one riser relative to the frame and in a direction perpendicular to the longitudinal frame axis of the frame is limited. 
     
     
         144 . The riser assembly according to  claim 143 , wherein the elongate frame comprises multiple spacers for holding at least one riser, and wherein the spacers being positioned at a distance from each other along the longitudinal frame axis and the at least one riser is held by the spacers. 
     
     
         145 . The riser assembly according to  claim 144 , wherein the spacers comprise limiters for limiting the movement of the at least one riser held by the spacers, the limiters comprise a limiter opening, the at least one riser comprises radial extending protruding members located at a distance from each other along the longitudinal riser axis and the dimensions of the protruding members are chosen such that the protruding members which partly surrounded by the limiters are blocked from a passage through the limiter opening. 
     
     
         146 . The riser assembly according to  claim 144 , wherein the spacers comprise limiters for limiting the movement of the at least one riser held by the spacers, the limiters comprise a limiter opening, the at least one riser comprises radial extending protruding members located at a distance from each other along the longitudinal riser axis and the dimensions of the protruding members are chosen such that the protruding members which are located in the received position are blocked from a passage through the limiter opening. 
     
     
         147 . The riser assembly according to  claim 145 , wherein each protruding member has a length in which the protruding member extends along a longitudinal riser axis, and each protruding member provided on the at least one riser has a different length. 
     
     
         148 . The riser assembly according to  claim 145 , wherein the distance between the protruding members of the at least one riser or between the limiters is chosen such that by moving the at least one riser in a direction of the longitudinal riser axis, the protruding members are successively placed in or out the received position. 
     
     
         149 . The riser assembly according to  claim 145 , wherein the distance between the protruding members of the at least one riser and between the limiters is chosen such that by moving the at least one riser in a first direction along the longitudinal riser axis, the protruding member located the closest to the second riser end is placed as first in the received position. 
     
     
         150 . The riser assembly according to  claim 135 , wherein the riser assembly comprises oil or gas processing equipment on top of the buoy. 
     
     
         151 . The riser assembly according to  claim 135 , wherein the buoy comprises at least two buoy elements. 
     
     
         152 . The riser assembly according to  claim 151 , wherein the at least one riser is connected to multiple buoy elements. 
     
     
         153 . The riser assembly according to  claim 151 , wherein the at least two buoy elements comprise a first buoy element is located substantially in line with the longitudinal frame axis, and the first buoy element is at least partly surrounded by further buoy elements. 
     
     
         154 . A riser assembly for transporting a fluid, said riser assembly comprising:
 an elongate frame comprising a first frame end and a second frame end, wherein the first frame end is connected to a seabed and the second frame end is connected to a buoy, and   at least one riser for transporting a fluid, wherein the at least one riser is connected to the second frame end or the buoy, wherein the buoy comprises at least two buoy elements, the elongate frame comprises a longitudinal frame axis, the at least two buoy elements comprise a first buoy element is located substantially in line with the longitudinal frame axis, and the first buoy element is at least partly surrounded by further buoy elements.