Disappearing plug eliminates riser for subsea completions

Full-bore isolation valves (FBIVs) and multicycle tools (MCTs) eliminate the need for installing a drilling rig with a completion riser during subsea tree installation, thus reducing the time and cost for completing these wells.Shell International E&P Inc. used this Baker Oil Tools' disappearing plug technology for completing wells in its Crosby, Manatee, and East Anstey fields, all in deepwater Gulf of Mexico.Based on Gulf of Mexico deepwater drilling-rig day rates and the fact that about two thirds of completion costs directly relate to the time required to complete a well, Shell projects that removing the subsea tree installation from the rig's critical path will save about 25%...

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