Ultra-Deepwater Drilling Service — Deepwater Atlas
(Service)
Location or Storage Country: USA
Online Support Service: Yes
Interpretation of Data: Yes
Description:
The Deepwater Atlas is a state-of-the-art ultra‑deepwater drillship designed and built by Jurong Shipyard, Singapore (Espadon JE3T design). It entered service in 2022 and is operated by Transocean. The vessel is DNV‑classified (+1A1, Ship Shaped Drilling Unit, E0, DYNPOS AUTRO, DRILL, CRANE, HELDK, BIS, MPD) and sails under the flag of the Marshall Islands.
The drillship is equipped for harsh environment and ultra‑deepwater drilling, with a designed water depth capability of 12,000 ft (3,658 m) and a maximum drilling depth of 40,000 ft (12,192 m). It features a dual‑derrick design, five high‑pressure mud pumps, a 20,000 psi BOP stack, and an advanced DP‑3 dynamic positioning system. The vessel also incorporates MPD (Managed Pressure Drilling) readiness.
Overview:
Technical Specifications Table
| Parameter | Value |
|---|---|
| Design / Generation | Jurong Espadon JE3T Ultra Deepwater Drillship |
| Constructing Shipyard | Jurong Shipyard, Pte Ltd, Singapore |
| Year Entered Service | 2022 |
| Classification | DNV +1A1, Ship Shaped Drilling Unit, E0, DYNPOS AUTRO, DRILL, CRANE, HELDK, BIS, MPD |
| Flag | Marshall Islands |
| Dimensions (L x W x Depth) | 816.6 ft (249 m) x 139.4 ft (42.5 m) x 64 ft (19.5 m) |
| Draft (Maximum Operating / Transit) | 38.05 ft (11.6 m) / 26.3 ft (8 m) |
| Accommodation | 220 persons |
| Displacement (Operating) | 103,093 st (93,523 mt) |
| Variable Deck Load (Operating / Transit) | 24,250 st (22,000 mt) / 17,637 st (16,000 mt) |
| Transit Speed | 12 knots |
| Maximum Water Depth (designed / outfitted) | 12,000 ft (3,658 m) / 8,000 ft (2,648 m) |
| Maximum Drilling Depth | 40,000 ft (12,192 m) |
| Derrick | Dual Dynamic Bottle Neck Type (DDBN-1750/1250), 168.86 ft (51.5 m) clear height, API 4F SSL E2/U2 |
| Gross Hook Load (Main / Aux) | 1,700 st (1,542 mt) / 1,250 st (1,134 mt) |
| Drawworks (Main / Aux) | NOV AHD-1700 (10,500 hp) / NOV AHD-1250 (9,000 hp) |
| Compensator (Main) | NOV CMC-E-1500/3300-7x78, rated 1,650 st (1,497 mt) locked, 750 st (680 mt) compensating, 25 ft stroke |
| Rotary Table (Main & Aux) | NOV RST-755 75‑1/2″ hydraulic, 1,500 st / 1,250 st, 45,000 ft‑lbs continuous torque |
| Top Drive (Main / Aux) | NOV TDX-1500 (1,500 st) / NOV TDX-1250 (1,250 st); max speed 275 rpm, continuous torque 105,000 ft‑lbs at 130 rpm |
| Tubular Handling | Two (2) NOV ARN-270 iron roughnecks; two (2) NOV/HR-IV-ER Hydracracker racking systems; one (1) NOV Pipe Catwalk Shuttle CWS-P20-90HS-90-HS (22 st capacity, 93 ft tubulars) |
| Riser Feed | One (1) NOV Riser Catwalk Machine CWM-R45-90-HS (49 st capacity); two riser cranes + riser lift |
| Mud Pumps | Five (5) NOV 14-P-220 AC triplex pumps, 7,500 psi, each driven by two GE 1,150 hp motors (plus space for optional 5th pump) |
| High‑Pressure Mud System | Rated 7,500 psi |
| Solids Control | Six (6) Brandt Single VSM-MS triple deck shale shakers |
| Cranes | Three (3) knuckle boom cranes (110 st @ 62 ft radius, 27 st @ 147 ft); one (1) subsea crane (181 st, active heave compensated, 9,842 ft W.D.); one (1) stern crane (44 st) |
| Main Power | 6 × Wärtsilä 16V32E (720 rpm, 7,680 kW each); total 46,080 kW driving 7,200 kW, 11 kV generators (total 43,200 kW) |
| Emergency Power | One (1) Cummins CSMxTA60OLGS, 1,900 kW driving 1,700 kW, 2,125 kVA generator |
| Power Distribution | Three Siemens 11 kV AC switchboards (AGP); three Siemens 690 VAC drilling VFD switchboards; six Schneider 690 VAC LV switchboards |
| Fuel Oil Capacity | 53,069 bbl (8,437 m³) |
| Liquid Mud (active+reserve+slug) | 20,548 bbl (3,267 m³) |
| Base Oil | 6,289 bbl (1,000 m³) |
| Brine | 11,132 bbl (1,770 m³) |
| Drill Water | 23,989 bbl (3,814 m³) |
| Potable Water | 12,975 bbl (2,062 m³) |
| Bulk Material (mud + cement) | 38,140 cu ft (1,080 m³) |
| Sack Storage | 10,000 sacks |
| BOP | One (1) six‑ram 18‑3/4″ × 20,000 psi NOV BOP; one (1) seven‑ram 18‑3/4″ × 15,000 psi NOV BOP; separate test control system |
| LMRP | Two LMRPs: 15k (NOV/Schaffer 18‑3/4″ 10,000 psi spherical) and 20k (GE annular) |
| BOP Handling | NOV BOP Moonpool Trolley (716 st); BOP Gantry Crane (2 × 330 st main, 2 × 38 st auxiliary) |
| Marine Riser | NOV FT-HC 21″ OD flanged with 4‑1/2″ ID choke/kill lines, 4″ booster line, 2 conduit lines |
| Tensioners | 8 × NOV WRT-250-D50PL (250 kips each, 50 ft stroke); total 4,000 kips combined capacity |
| Diverter | NOV/Shaffer 21‑500-75-EXT, 21″ × 500 psi with 16″ overboard valve and flow selector |
| Tree Handling | One (1) 1,102 st (1,000 mt) Xmas tree trolley and riser trip cart; two (2) 165 st skid carts |
| BOP Controls | NOV Multiplex control system with deadman, auto‑shear, acoustic backup, ROV intervention |
| Moonpool | 91.86 ft (28 m) × 35.43 ft (10.8 m) |
| Thrusters | Six (6) Rolls Royce UUC 455 FP azimuthing thrusters, 5,500 kW each (ADCAP) |
| DP System | DPS‑3 rated for 12,000 ft water depth; Kongsberg DP-32, DP-12 & C‑Joy system |
| Additional Features | MPD Ready – Upgraded |
Documentation:
Transocean Ltd.
Markets: Shell, BP, Chevron, TotalEnergies, Equinor
Total Employees: 6000
Locations: 1414 Enclave Parkway Houston, TX 77077, USA
Main Products/Services: Offshore drilling services, ultra-deepwater drilling, harsh environment drilling, rig management
Registration: Turmstrasse 30 CH-6312 Steinhausen Switzerland
Year Established: 1926