Patent ID: 9731796
Date: 2017-08-15
CPC Classifications: B63B,E21B

Claim:
1. A well intervention semisubmersible vessel, wherein the vessel has a main hull level, comprising: a drilling rig disposed on the main hull level, the drilling rig further comprising a derrick floor formed in the main hull level at the same level as the main hull level; a handling tower disposed on the derrick floor, wherein the handling tower comprises a single point land out without riser tensioners; a drill floor at the same level as the main hull level; a moonpool door slidably connected to the derrick floor wherein the moonpool door is capable of being at the same level as the main hull level; a skidding system positioned on the derrick floor; and a lift frame capable of being skidded into position on the skidding system to the handling tower.