Rig: ENSCO 8506

Name ENSCO 8506
Owner Valaris PLC
Manager Valaris PLC
Rig Type Semisub
Sub Type Ultradeep Water
Jackup Type --
Max Water Depth (ft) 8500
Max Drill Depth (ft) 35000
Dimensions (ft) 427 x 225 x 96
Leg Length (ft) --
Competitive Yes

Current Location

Country USA
Region North America

Drilling Equipment

Drawworks Type National Oilwell Varco ADS 30Q
Drawworks HP 6000
Mud Pumps Type Lewco W-2215 Triplex
Top Drive National Oilwell Varco TDS-1000
Hookload Capacity (lbs) 2000000

Rig Construction Details

Rig Design ENSCO
Rig Model 8500
Year Built 2012
Country of Build Singapore
Yard Name Pioneer Yard I
Group Yard Name Keppel Offshore & Marine Ltd.

Rig Contract Details

Operating Status Cold Stacked
Operator --

News

16 Apr 2014

Large waves cause problems for 'ENSCO 8506'

The US Coast Guard is overseeing response efforts, Tuesday, for an offshore drilling rig that began taking on water into a ballast tank after a large wave hit them in heavy seas more than 100 miles south of Galveston, Texas. On Tuesday morning the US Coast Guard received a report that the ‘ENSCO 8506’, an offshore semi-submersible drilling rig, had been damaged causing one of the rig’s column ballast tanks to take on water. The capacity of the ballast pumps on-board are keeping up with the ingress of water in the column ballast tank. The rig is maintaining an even keel and remains in a stable position without resorting to using the emergency pumps, or performing an emergency disconnect from the riser. There are no reports of injuries or pollution. The ‘ENSCO 8506’ was conducting exploration activities for Anadarko at the company’s Deep Nansen prospect at the time and did not have any oil on-board from drilling operations. The drilling rig is operating in an area with a 3,800-foot water depth and was not conducting actual drilling operations when the incident occurred. All rig operations have been suspended and preparations are being made for normal disconnect procedures if necessary to make repairs.

18 Jun 2012

Keppel to deliver seventh ultra-deepwater semi to Ensco

Keppel FELS Limited (Keppel FELS) is set to deliver ENSCO 8506, the seventh semisubmersible (semi) drilling rig in the ultra-deepwater ENSCO 8500 Series® to Ensco (NYSE: ESV) safely, on time and within budget. ENSCO 8506 has been contracted to Anadarko Petroleum Corporation for deployment in the U.S. Gulf of Mexico in 4Q 2012.

13 Aug 2008

Keppel FELS to build seventh ENSCO deepwater rig worth US$560 million

Keppel FELS Limited (Keppel FELS) has won the contract to build the seventh ENSCO 8500 Series® deepwater semisubmersible (semi) worth US$560 million. This sum includes equipment specified by the owner. To be delivered in the second half of 2012, the ENSCO 8506 will be the seventh consecutive semi that Keppel FELS is constructing for ENSCO International Incorporated (ENSCO). The contract follows shortly after the award of the sixth semi, ENSCO 8505, that was announced on 1 June 2008. Mr Daniel W. Rabun, Chairman, President and CEO of ENSCO said, "Working with a leading shipyard that is familiar with our needs will enable us to advance our deepwater strategy more effectively. “As we continue to execute on our strategy to expand our deepwater presence, we again look forward to working with Keppel FELS on this important project. Our US$3.1 billion investment in the ENSCO 8500 Series® rigs demonstrates our commitment to playing a meaningful role in the growing deepwater market. Only two other companies will have ultra-deepwater semisubmersible rig fleets equal to the size of the ENSCO fleet."

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