METHOD FOR DRILLING A PLURALITY OF SUBSEA WELLS FROM A STATIONARY FLOATING VESSEL AN OFFSHORE DRILLING VESSEL A DRILLING RISER TRANSPORT SYSTEM AND AN OFFSHORE VESSEL

摘要

The floating marine drilling and / or production platform includes a rail mounted transport system that can be located at a plurality of selected locations on the vessel''s well bay. This transport system can move the drilling riser from one drilling position to another drilling position with the drilling riser tensioner system and ejector protector, without removing it from the vessel''s well bay. Using the transfer system, the drilling riser is fully lifted from the first jaw and placed on the adjacent second jaw using the guide line. The transport system can then move the top of the drill riser (along with the tensioner and BOP attached to the drill riser) to the second drilling position. To secure the bottom of the drilling riser without removing it from the sea while the production riser is installed, a dummy ditch can be provided at the seabed.