Corrective Plan Underway for DS-1 Following Riser Pipe Buckle

Rig contractor Ensco Plc is completing a corrective action plan for the DS-1 (UDW drillship) after a riser pipe buckled on board the rig, and the company expects to be back to work soon following the incident, a company spokesperson told Rigzone.

No workers were injured in the incident, which occurred several days ago, the spokesperson told Rigzone in an email statement.

Marine website gCaptain reported Wednesday that workers on board the drillship forgot to open the blind shear rams while running the rig’s blowout preventer (BOP) to the wellhead. The hook load began to increase unexpectedly after the BOP was lowered 3,970 feet down, according to the website. The riser reportedly was not able to fill with water with the blind shear rams closed, and the pipe collapsed onto itself as the hydrostatic differential continued to build.

DS-1 was working for Total S.A. offshore Angola at the time of the incident. According to Rigzone’s RigLogix database, the rig had started drilling in mid-July at the Cravo 355 location in 4,570 feet of water. The rig is under contract at a day rate in the mid-$350,000s.

Karen Boman has more than 10 years of experience covering the upstream oil and gas sector. Email Karen at


Click on the button below to add a comment.
Post a Comment
Generated by readers, the comments included herein do not reflect the views and opinions of Rigzone. All comments are subject to editorial review. Off-topic, inappropriate or insulting comments will be removed.

Related Companies
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
Field Maintenance Controls Technician
Expertise: Maintenance Technician|Rig Mechanic
Location: Eighty Four, PA
Maintenance Supervisor - Drilling
Expertise: Maintenance Manager|Rig Mechanic
Location: Eighty Four, PA
United States Odessa: Integrated Service Coordinator
Expertise: HSE Manager / Advisor
Location: Odessa, LA
search for more jobs

Brent Crude Oil : $51.78/BBL 0.77%
Light Crude Oil : $50.85/BBL 0.83%
Natural Gas : $2.99/MMBtu 4.77%
Updated in last 24 hours