Transocean GSF Rig 127 Drills Deepest Extended-Reach Well

GSF Rig 127
(Click to Enlarge)

Transocean announced that the Transocean jackup GSF Rig 127 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 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.

"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."

Gary Bauer, Transocean's Egypt and Middle East Division Manager, noted about the world record: "It goes without saying that your accomplishment truly epitomizes and embraces Transocean's vision statement where 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. Well done to the entire Rig 127 Team and continued success in delivering safe, superior performance."

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.

For More Information on the Offshore Rig Fleet:
RigLogix can provide the information that you need about the offshore rig fleet, whether you need utilization and industry trends or detailed reports on future rig contracts. Subscribing to RigLogix will allow you to access dozens of prebuilt reports and build your own custom reports using hundreds of available data columns. For more information about a RigLogix subscription, visit

Our Privacy Pledge

Most Popular Articles

From the Career Center
Jobs that may interest you
Well Monitoring Specialist
Expertise: Drilling Consultant|MWD / LWD|Well Control
Location: Houston, TX
Expertise: Drilling Superintendent
Location: Oklahoma, United States, OK
Field Service Technician - Warrior
Expertise: Maintenance Technician|Rig Mechanic
Location: Springtown, TX
search for more jobs

Brent Crude Oil : $51.38/BBL 2.44%
Light Crude Oil : $50.43/BBL 2.26%
Natural Gas : $3.14/MMBtu 0.94%
Updated in last 24 hours