Page 31: of Maritime Reporter Magazine (December 2022)

GREAT SHIPS of 2022

The Deepwater Atlas was launched this year in

Singapore. What, speci? cally, is so special about it?

The Deepwater Atlas is the ? rst of its kind eighth-generation drillship that will offer 20,000 psi well control capabilities and a 3.4 million pound hoisting capacity. The Deepwater Atlas and the Deepwater Titan, the Atlas’ sister-rig that will follow her to the Gulf of Mexico next year, offer the highest rated equipment in the industry. These eighth-generation, ultra- deepwater drillships will allow Transocean, and its customers, to access high pressure and high temperature reservoirs that previously were not accessible. The equipment on our newest drillships can reduce the time it takes to drill a deepwater well, bringing total costs down.

Among the special aspects of the Deepwater Atlas is the story she tells about resilience. Despite an industry downturn and glob- al pandemic challenges, she has now made her way to the Gulf of

Mexico, where she commenced drilling operations. Transocean owns the only two assets in the world speci? cally designed to maximize ef? ciencies for 20,000 psi well completions.

It has been said that this is the ? rst 8th gen- eration drillship in the world. What does this mean, exactly?

Transocean’s eighth-generation drillships are designed to be out? tted with well control systems rated for 20,000 psi and possess a 3.4 million pound hoisting capacity. To provide this capability, upgrades were made to the derrick and a new, high- er-rated drawworks, top drive and rotary table were added.

This new equipment was designed and delivered speci? cally for these projects – marking new ? rsts, not only for Trans- ocean, but for the entire industry.

For context, seventh-generation rigs offer 2.5 to 2.8 million

Deepwater Atlas Main Particulars pound hoisting capacity, and 15,000 psi well control systems.

Dimensions 816.6 x 139.4 x 64 ft. (depth) (249 x 42.5 x 19.5m)

Sixth-generation rigs offer a hoisting capacity of up to 2.0

Draft, operating ..................................................................................33.5 ft (10.8m) million pounds and are rated for water depths up to 10,000

Draft, transit ...........................................................................................26.3 ft. (8m)

Accomodation ........................................................................................................220 feet. Seventh- and eighth-generation rigs are designed for wa-

Displacement ............................................................................................92,053 mt ter depths of up to 12,000 feet.

Transit speed .................................................................................................12 knots

Maximum drilling depth ..........................................................40,000 ft. (12,192m)

Shipyard ..........................................................................Jurong Shipyard, Singapore

How, speci? cally, will these ships create an op-

Classi? cation ........................................................................................................DNV portunity to drive the total well cost down?

Flag....................................................................................................Marshall Islands

Main power ..................................................................6x Wärtsilä 16V32E 4-stroke

The upgraded hoisting capacity will provide our customers

Total power ................................................................................................46,080 kW with numerous cost and time-saving opportunities, especially

Emergency power ............................................................Cummins CSMXTA60OLGS when drilling programs and well con? gurations require the

Power dist. ........................................ 3x Siemens 11KV AC switchboards with AGP

Thrusters ...........6x Rolls-Royce UUC 455 FP variable speed azimuthing thrusters handling of heavy, large diameter casing strings. With a higher

DP system ...................................................................................................Kongsberg hook load, more work can be accomplished in a shorter period.

Storage Capacities

Additionally, the 20,000 psi blowout preventer (BOP) stacks

Fuel oil .......................................................................................................53,069 bbl.

Liquid mud .................................................................................................20,548 bbl have been designed with extra attention to features that result in

Base oil .......................................................................................................6,289 bbl.

reduced maintenance times. The well test and completion deck

Brine ..........................................................................................................19,580 bbl.

Drill water ..................................................................................................23,989 bbl.

is the biggest in the offshore drilling industry. The aft hull was

Potable water.............................................................................................12,975 bbl designed for improved ef? ciency, which was accomplished by

Bulk material ...................................................................................................38,140 reducing double-handling of equipment and materials.

Sack storage .........................................................................................10,000 sacks www.marinelink.com 31

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