Alpha Star and Gold Star are ultra-deepwater DP semi-submersible drilling rigs that started operations in July 2011 and February 2010, respectively. The drilling rigs are capable of drilling in water depths of up to 9,000 feet and have a drilling depth capacity of up to 30,000 feet.
Vessel Name: Gold Star
Owner: Constellation
Manager: Constellation
Rig Type: Semisub
Sub Type: Ultradeep Water
Max Water Depth (ft): 9,000
Max Drill Depth (ft): 30,000
Dimensions (ft): 339 x 228 x 26
Competitive: Yes
Current Location:
Country: Brazil
Region: Latin America
Rig Construction Details
Rig Design: Gusto MSC
Rig Model: Gusto DSS-38
Year Built: 2011
Country of Build: Singapore
Yard Name: Pioneer Yard I
Group Yard Name: Keppel Offshore & Marine Ltd.
Rig Contract Details:
Operating Status: Ready Stacked
Operator: Petrobras
Lone Star is an ultra-deepwater DP semi-submersible drilling rig that started its operations in April 2011. The rig is capable of drilling in water depths of up to 7,900 feet and has a drilling depth capacity of up to 30,000 feet.
On July 22, 2019, Constellation Oil Services Holding S.A. ("Constellation" or the "Company") the Brazilian offshore drilling
announced that three of the Company's ultra-deepwater (UDW) rigs, Alpha Star , Gold Star, and Lone Star, have been awarded new firm contracts with Petrobras S.A. ("Petrobras") for two years each. The drilling activities will be performed offshore of Brazil and operations under each contract is expected to commence by January 2020. The estimated dayrate to be around $155,000 for each contract.
Securing these three contracts, together with the recently announced contract for Laguna Star on a two-year deal, is a remarkable achievement for the Company. Petrobras is a key player in the Brazilian market and this reinforces the long-standing partnership the companies have built over the years. In addition, with Brava Star and Olinda Star rigs are also under contract, a substantial majority of Company’s fleet is currently under contract.
Constellation is a market leading provider of offshore and onshore oil and gas contract drilling and FPSO services in Brazil through its subsidiary Serviços de Petróleo Constellation S.A. ("Serviços de Petróleo Constellation"). With continuous operations since 1981, Serviços de Petróleo Constellation has built an unmatched reputation for excellence in offshore and onshore drilling services, obtaining ISO 9001, ISO 14001, OHSAS 18001 and API Spec Q2 certifications for its quality management, environmental and safety records and systems.
The Gold Star (DSS 38) semi-submersible drilling rig is a cost effective drilling unit designed with drilling equipment suitable for drilling well, work over (completion and intervention), exploration drilling as well as development drilling. It embodies the collective past
experience of new builds and conversions of semi-submersible units, which results in a rig, which is optimized for offshore operations, environmental protection and safety aspects. Distinguishing this rig is the high level of environmental protection built into the operational case.
The Gold Star is environmentally friendly, designed for maximum uptime while minimizing emissions and discharge. Crew requirement is optimized on the drill floor as the rig is outfitted with automated pipe feed and stabbing as well as pipe-handling functions.
The Gold Star (DSS 38) and equipment have been designed for environmental conditions of the Gulf of Mexico, West Africa, South East Asia, Brazil and similar environmental conditions up to 9,000 ft. water depth and can drill up to 30,000 ft. from RKB with a variable drilling load of up to 9,622 ton (10,606 sh ton). Special consideration for the Santos and Campos Basin Environmental Conditions is taken into account in the design to warrant adequate and satisfactory operations in the Santos and Campos Basin offshore Brazil.
The hull structural steel material has been designed for ambient temperature of -10°C. Maximum ambient temperature has been established at 40 °C. Seawater
temperature shall be based on 0° to 32 °C. The DSS 38 drilling semi-submersible is designed.
The vessel is designed to keep station with eight (8) azimuth thrusters utilizing a dynamic positioning system to meet ABS Class requirements for DPS2 and Petrobras specification. The DP-system have been designed to keep the vessel on location according to the Campos Basin 1-year environmental conditions with the riser connected and under drilling operations.
Gold Star: Semi-submersible Drilling Rig
Technical Specifications:
General:
Name: Gold Star
Flag: Panama
Year Built: 2008
Builder: Keppel Fels, Singapore
Design: DSS 38
Classification: ABS Maltese Cross, A1, Column Stabilized
Drilling Unit, AMS, DPS-2
Mai n Dime nsi ons
Length: 103.5 m (Overall), 69.5 (Main Deck)
Breadth: 69.5 m
Depth: 8 m (Main Deck)
Columns: 4 x (15 x 15 m) (Square)
Pontoons: 103.5 x 15 x 9 m (Length x Breadth x Height)
Deck Area: 69.5 x 69.5 m (Main Deck)
Desig n Operati ng Conditi ons
Maximum Water Depth: 9,000 ft.
Drilling Depth Capacity: 30,000 ft.
Operating Draft: 20.50 m
Transit Draft: 8.70 m
Survival Draft: 16.50 m
Operational Displacement: 39,327 ton
Transit Displacement: 35,677 ton
Electric System and Diesel Motors
Main Power: Ten EMD, Model 20-710-G7B, 39.5 MW, 900 rpm
Main Generators: Ten Baylor AC Generator, 4091 KW,
900 rpm, 11000 Volts
Power Distribution: Keppel Norway
Emergency Power: One Caterpillar, Model 3508B, 750 KW,
1800 rpm
Propu lsion/Thrusters
Thrusters: Eight Flowserve, azimuth thrusters, 3,000 KW,
driven by electric motor, variable speed / VFD controlled,
2 each pontoon end
Dynamic Positioning System: Kongsberg Simrad / SDP
SBC500, position reference DGPS, hydro-acoustic
Maximum Operati ng / Envir onme nta l Conditi ons
Normal drilling
Draft / Displacement: 20.5 m / 39,327 ton
Variable Deck Load: 9,622 ton (drilling/survival), 4,896 ton (transit)
Wave Height (maximum): 10.7 m, peak period: 13.70 s
Wind Speed (maximum): 19.63 m/sec
Current Speed (maximum): 1.61 m/sec
Heave (maximum): 6.2 m
Pitch (maximum): 2.6 degrees
Roll (maximum): 2.85 degrees
Drilling Equipment
Derrick: NO V, 185 x 43 x 40 ft. Nominal Hook Load 2,000,000 lb
Drawworks: NO V, SSGD-1000-6000-48-82-9, 6,000 HP
driven by four AC motors (VFD), Baylor, CM632UUT
Rotary: NO V, RST, 60.5”
Top Drive: NO V, TDS 1000A, 2,000,000 lb
Traveling Block: NO V, 7 x 72” sheaves, 2,000,000 lb
Motion Compensator: NO V crown mounted compensator,
1,000,000 lb, 25 ft. stroke
Mud System:
- Mud Pumps: Four NO V, 14P220 triplex, 2,200 HP, driven by
two AC motors Baylor,
- Five Brandt Cascade Shakers, LCM3D/CM2
- One Brandt Shaker with Mud Cleaner/Desilter/Desander, LCM3D
Rig Storage Capacities
Upper Deck: Pipe Racks 2,500 kg/m²
Riser Bay (vertical) / Riser Pipe Rack (horizontal): 100 x 75’ / 2.5 ton/m²
Miscellaneous Storage Area: 1.3 ton/m²
Bulk Bentonite / Barite: 169.9 m³
Bulk Cement: 226.53 m³
Sack Storage Area: 90 m²
Liquids: Drilling Mud: Active Tanks (6 ea.): 603 m³
Reserve Tanks (4 ea.): 373 m³
Slug Tanks (3 ea.): 33 m³
Sand Trap and Processing Tanks (5 ea.): 55 m³
Trip Tank (1 ea.): 6.4 m³
Stripping Tank (1 ea.): 1.2 m³
Brine Storage: 850.12 m³
Synthetic Mud Storage: 459 m³
Drill Water: 1,434 m³
Fuel Oil: 2,359 m³
Potable Water: 1,439 m³
Subsea Systems
Blowout Preventers (Trimmed for H2S Services):
Hydril 18 ¾” x 15,000 psi WP, One Single + Two Double ram
units, with shear rams and casing shear rams,
Two Hydrill GX Annular 18 3/4 “ x 10,000 psi WP, both on LMRP
BOP Handling: Patriot BOP transporter rated for 400 t with
hang-off system.
Control System: Hydril multiplex, blue/yellow cable reel,
hot line hose reel
Hole Position Indicator: Kongsberg
Riser Angle Indicator: Hydril
Diverter: One Hydril FS21, 60“x 500 psi working pressure,
two diverter outlets of 16” OD
Drill Pipe: 5 1/2” TSDS-50
Drill Collars: 6 3/4”x 4 1/2 ’ IF, 8”x 6 5/8” REG and 9 1/2 ”x 7 5/8” REG
Choke & Kill Manifold
(Trimmed for H2S Services):
WOM 15,000 psi manifold, 3 1/8”manual valves, trimmed for
H2S service
Two manual choke and hydraulic choke
Marine Riser System
Aker Kvaern Clip Riser - 21” OD x 75 ft. long, with clip connectors
Riser and Guideline Tensioning System: Ten NO V 250 Kips,
12.5 ft. stroke
Riser running tools: Aker Kvaern Clip Riser
Test Tool – Vetco 18 ¾”, SG-5 universal plug type, Clip riser
Flex Joints: Oil States 18 ¾” x 5000 psi WP
Mooring System
Winches: Two Broil, electrical, 2,200 kN stalling pull,
6,010 kN braking hold capacity;
Anchor Chains: Two 3” x 400 m stud Link RQ4 chain, API
specification 2F
Anchors: Two of 12 ton Flip Delta type
Cranes
Two Kingpost Deck Cranes, Seatrax S9032SS 60 ton @ 29m;
One Knuckle Boom Crane, NO V, 12 ton
Drill Floor
27 m (Length) x 16.4 m (Width), hookload capacity of
2,000,000 lb, setback capacity of 523 ton, simultaneous
setback/hookload capacity of 1,228 ton
Moon Pool
39.87 m x 9.0 m
Specia l Features
Risers in Vertical Storage: 75 ft. x 40 ton and NO V riser
handling crane for vertical riser
Patriot Monorail Overhead Cranes, 2 times 125 ton for BOP+
1 x 20 ton for maintenance on BOP, 2 times 50 ton for Xmas tree
One knuckle boom crane for tubular handling on the aft deck
Data Acquisition System NO V SDI System
Manual controls have been added to override automated
functions, for operational backup
Helideck for Sikorsky S-92,
D value 22,2m, Max. weight 12.8-ton MPD Ready,
Zero Discharge;
Accommodations for 130 people are provided with galley,
training and recreation areas, and sick bay.
The rig was chartered by Petrobras for four years from Feb 01, 2015 to Feb 01, 2018 to support exploration and production activities offshore Brazil.
This first semisubmersible, Gold Star, which was awarded to Keppel FELS in August 2006. Gold Star will support Petrobras’ growth plans whilst Alpha Star may be deployed in either offshore West Africa or South America, when they are delivered in the second half of 2009 and of 2011 respectively.
Vessel Name: Gold Star
Owner: Constellation
Rig manager: Constellation
Type: Semi-sub Rig
Design category: Semi-6th gen-DP
Full design name: KFELS/MSC DSS 38 
IMO: 8770041
Class: ABS
Constructed at: Keppel FELS
Year in SVC: 2008
Latest upgrade: ----
Competitive: Yes
SPS due date: ----
Contract status:
Status: Warm/Hot Stacked
Operator: ----
Country: Brazil
Region: South America
Day rate: ----
Next available: 22.07.2019
Available until: 14.01.2020
Backlog: 140740000
Value: Value ($m): 96-106;
1) Contract detail:
Country: Brazil
Day rate: 155 000
Start date: 15.01.2020
End date: 15.01.2022
Operator: Petrobras
Location: ----
Number of wells: ----
Variable rate: No
Water depth: ----;
Work type: Development Drilling
Duration (days): 731
Comment: Estimated dayrate.
2) Contract detail:
Country: Brazil
Day rate: 470 000
Start date: 01.02.2015
End date: 01.02.2018
Operator: Petrobras
Location: ----
Number of wells: ----
Variable rate: No
Water depth: ----;
Work type: None type
Duration (days): 1 096
Comment: ----
Vessel Name: Gold Star
Vessel Type: Semi-sub Rig
IMO: 8770041
MMSI: 372971000
Indicativo: 3ELK6
Flag: Panama [PA]
Gross Tonnage: 27065
Deadweight: 17751 t
Length Overall x Breadth Extreme: 103.5m × 69.5m
Year Built: 2009
Status: Active
Voyage Info:
BR
RIO [Rio De Janeiro (BR)]: ATD : ATD: 2019-12-24 16:05 LT (UTC -3)---------->---------->---------->CAMPOS BASIN
Reported ETA: 2020-12-07 19:30 LT
Reported Destination: CAMPOS BASIN
Draught (Reported/Max): 19.1 m /----
Speed recorded (Max / Average): 7 knots / 6.8 knots
Reported Destination and ETA Received 2021-01-04 06:16 UTC
• Position:
Position Received: 2021-01-03 23:10 UTC 14 hours, 6 minutes ago
Vessel's Local Time: 2021-01-03 20:10 LT (UTC -3)
Area: ECSA - East Coast South America
Current Port: -
Latitude / Longitude: -21.95451° / -39.77017°
Status: Restricted Manoeuvrability
Speed/Course: 0.1 kn / 228 °
AIS Source: 635 Açu Ports VTS center
Weather:
Wind: 25 knots
Wind direction: N (18°)
Air Temperature: 26°C
Ex Names History: Nome do navio: DSS 38,
Último reporte: 2009-04-01,
