FBIVs (Full-bore isolation valve) and MCTs (multicycle tool) 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 % from the completion budget. Shell completed wells in the Crosby project, the first application of the FIBV and MCT in the Gulf of Mexico, in less than 60 % of the expected time and 20 % below budget. The wells did not require wireline or slickline work, other than for logging wells and setting sump packers.
Disappearing plug eliminates riser for subsea completions
Mit einem neuen Ventil und neuen Geräten werden Zeit und Kosten bei der Bohrlochvollendung unter Wasser in der Tiefsee eingespart
Oil and Gas Journal ; 100 , 49 ; 51-55
2002
4 Seiten, 3 Bilder
Aufsatz (Zeitschrift)
Englisch