Transocean rig drills record depth off Qatar
Posted: 27 May 2008
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Transocean jackup GSF Rig 127 has set a world record for the longest extended-reach well ever drilled at 40,320 feet (12,289 meters) MD (measured depth) with a 35,770-foot (10,902-meter) horizontal section.
The well was drilled offshore Qatar in 36 days and incident-free. The new record of 7.6 miles is also the first well in the history of offshore drilling that exceeds 40,000 feet (12,191 meters), the company has announced.
The well surpasses by approximately 2,000 feet the prior extended-reach record of 38,322 feet (11,680 meters) MD set by another drilling contractor with a land rig drilling at Sakhalin Island earlier this year.
The rig’s crewmembers, working with the client, Maersk Oil Qatar AS, overcame many constraints, including high drilling torque throughout certain parts of the horizontal section. The Well BD-04A is in the Al-Shaheen field offshore Qatar.
In addition to staying focused on safe operations, crews used extensive deck-management planning and a supply boat to hold additional drill pipe so that the rig could stay within its variable deck load rating, the company said.
“Everyone involved deserves congratulations for coming together and through great planning and teamwork managing the challenges on this well in an incident-free manner,” said Jim Granger, Performance Rig Manager.
Making the record even more impressive is the fact that the Friede & Goldman L-780 Mod II design jackup, with 250-foot water depth capability, operates with just two Emsco FB 1600 Mud pumps. Other equipment includes the rig's 2000-horsepower National 1320 UE Drawworks, and a Varco TDS-4S Top Drive. In addition to its record-setting performance, GSF Rig 127 crews last April reached one year without a lost-time injury.
“Rig 127 has a group of highly motivated people dedicated to achieving operational excellence in an incident-free environment and being recognized for delivering superior performance,” said Gary Bauer, Transocean's Egypt and Middle East Division Manager.
“Well done to the entire Rig 127 Team and continued success in delivering safe, superior performance.”
Transocean Inc. is one of the world's largest offshore drilling contractor and the leading provider of drilling management services worldwide. With a fleet of 138 mobile offshore drilling units plus nine announced ultra-deepwater newbuild units.
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