6th-gen Semi DP KFELS/MSC DSS 38 Rig Info/Jobs.
The ultra-deepwater DP semi-submersible drilling rigs Alpha Star and Gold Star are 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: Alpha Star
Owner: Constellation
Manager: Constellation
Rig Type: Semisub
Sub Type: Ultradeep Water
Max Water Depth (ft): 9,000
Max Drill Depth (ft): 24,600
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 co. 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 Alpha Star (DSSTM38) 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 Alpha 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 Alpha Star (DSSTM38) and equipment have been designed to operations in environmental conditions of the Gulf of Mexico, West Africa, South East Asia, Brazil and similar conditions up to 9,000 ft. (2.743 m) water depth, and can drill up to 24,600 ft. (7.500 m) from RKB with a variable drilling load of up to 9,622 ton (10,606 sh ton). Special consideration for the Campos and Santos Basins environmental conditions is
taken into account in the design to guarantee adequate and satisfactory operations in the brazilian offshore.
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 vessel is designed to keep station with eight azimuth thrusters utilizing a dynamic positioning system to meet ABS Class requirements for DPS 2 and Petrobras specification. The DP-system has 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.
Alpha Star: Semi-submersible Drilling Rig
Technical Specifications:
Technical Specifications:
General:
Vessel Name: Alpha Star
Flag: Panama;
Year Built /Upgraded: 2011
Builder: Keppel Fels, Singapore
Design: Gusto DSS-38, DP2
Classification: ABS Maltese Cross, A1, Column Stabilized
Drilling Unit, AMS, DPS-2+
Main Dimensions:
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)
Design Operating Conditions:
Maximum Water Depth: 9,000 ft.
Drilling Depth Capacity: 24,600 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
Power & Machinery (Current Specification):
Main Power: 10
Generators Model: NOV Baylor 210-T855ZXT-661
Generators Power: 3580 kW
Engines Model: EMD, ME20-710G9B
Engines Power (each): 5,000 hp
Emergency Power: Caterpillar, CAT 3508B DITA Engine, 750 kW, 1,800 rpm
Power Distribution: Keppel Norway
[Electric System and Diesel Motors (Previous Specification) :
Main Power: Ten EMD, Model 20-710-G7B, 3580 KW, 900 rpm
Main Generators: Ten Baylor AC Generator, 4091 K
900 rpm, 11,000 Volts
Power Distribution: Keppel Norway
Emergency Power: Cummins KTA38-D9(M1) 1300 bhp,
1800 rpm ]
Propulsion/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 Operating/Environmental Conditions:
Normal drilling:
Draft / Displacement: 20.5 m / 39,327 ton
Variable Deck Load: 9,622 ton (drilling), 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: NOV, 185 x 43 x 40 ft .Nominal Hook Load 2,000,000 lb
Drawworks: NOV, SSGD-1000-6000-48-82-9, 6,000 HP
driven by four AC motors (VFD), Baylor, CM632UUT
Rotary Table: NOV, RST, 60.5”
Top Drive: NOV, TDS 1000A, 2,000.000 lb
Traveling Block: NOV, 7 x 72” sheaves, 2,000,000 lb
Motion Compensator: NOV crown mounted compensato
1,000,000 lb, 25 ft. stroke
Mud System:
- Mud Pumps: Four NOV, 14P220 triplex, 1,230 HP, 105 spm ,
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.
Two Hydril GX Annular 18 3/4 “ x 10,000 psi WP, both on LMRP
BOP Handling: NOV BOP transporter rated for 400 ton 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: Twelve NOV 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 Joint: Oil States 18 ¾” x 5000 psi
Mooring System:
Winches: 2 Broehl CAMW-30 2000kN, Holding capacity
6010 kN
Anchor chains: Two 3” x 400 m stud Link RQ4 chain, API
specification 2F
Anchors: Two of 12 ton Flip Delta type
Cranes:
Two (one for port & starboard side each) of TSC Patriot series 240 model 250 king post crane 160’
boom, Aux hoist 12t, Main hoist 60 t
One Knuckle Boom Crane, NOV, 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
Special Features:
Risers in vertical storage: 75 ft. x 40 ton and NOV riser
handling crane for vertical riser
NOV 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 NOV SDI System
Manual controls have been added to override automated
functions, for operational backup
Helideck for Sikorsky S-92
Accommodations for 150 people are provided with
galley, training and recreation areas, and sick bay
On 29 Mar 2011, Keppel FELS Limited (Keppel FELS) has delivered Alpha Star, the second of two DSSTM 38 semisubmersible rigs, to Brazil's Queiroz Galvăo Óleo e Gás (QGOG) four months ahead of schedule and with zero lost time incidents. This continues Keppel FELS track record of delivering its rigs on time or ahead of schedule. It is the third early delivery this year, following the early delivery of the semisubmersible drilling tender, West Jaya, to Seadrill and of the KFELS N Class rig, Rowan Stavanger, for Rowan Companies. The rig has been chartered by Petrobras for six years to support exploration and production activities offshore Brazil.
On 3 Jun 2008, Keppel Offshore & Marine Ltd (Keppel O&M), through Keppel FELS Limited (Keppel FELS), has secured a US$385 million repeat order to build a semisubmersible drilling rig for Brazilian drilling contractor group Queiroz Galvăo Óleo e Gás (QGOG). This price excludes the drilling and subsea equipment which will be supplied by QGOG. To be named Alpha Star, this deepwater platform will be
built to the DSS™ 38 design jointly developed by Keppel O&M’s technology arm Deepwater Technology Group and Marine Structures Consultants of The Netherlands. This latest rig is a repeat order of the first semisubmersible, Gold Star, which was awarded to Keppel FELS in August 2006. Gold Star will support Petrobras’ growth plans whilst Alpha Star may be deployed in either offshore West Africa or South America, when they are delivered in the second half of 2009 and of 2011 respectively.
Vessel Name: Alpha Star
Owner: Constellation
Rig manager: Constellation
Type: Semi-sub Rig
Design category: Semi-6th gen-DP
Full design name: KFELS/MSC DSS 38
IMO: 8770625 Class: ABS
Constructed at: Keppel FELS
Year in SVC: 2011
Latest upgrade: ----
Competitive: Yes
SPS due date: ----
Contract status:
Status: Warm/Hot Stacked
Operator: ----
Country: Brazil
Region: South America
Day rate: ----
Next available: 22.07.2019
Available until: 14.01.2020
Backlog: 140740000
Value: Value ($m): 140-150
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: 431 252
Start date: 01.07.2011
End date: 01.07.2017
Operator: Petrobras
Location: ----
Number of wells: ----
Variable rate: No
Water depth: ----
Work type: None type
Duration (days): 2 192
Comment: 6 years plus 6-year option.
Vessel Name: Alpha Star
Vessel Type: Semi-sub Rig
IMO: 8770625
MMSI: 371347000
Call Sign: HO6149
Flag: Panama [PA]
Gross Tonnage: 27065
Deadweight: 21575 t
Length Overall x Breadth Extreme: 103.5m × 69.5m
Year Built: 2011
Status: Active
Voyage Info:
BR JACUECANGA: ATD: 2020-03-14 07:27 LT (UTC -3)---------->---------->---------->8-JUB-59D: Reported ETA: 2020-12-29 16:00 LT
Reported Destination: 8-JUB-59D
Draught: 18.5 m
Speed recorded (Max/Average): 5.7/5.3 knots
Reported Destination and ETA Received 2021-01-04 07:19 UTC
• Position:
Position Received: 2021-01-04 11:25 UTC 1 hour, 46 minutes ago
Vessel's Local Time: 2021-01-04 08:25 LT (UTC -3)
Area: ECSA - East Coast South America
Current Port: -
Latitude / Longitude: -21.21708° / -39.98194°
Status: Stopped
Speed/Course: 0.1 kn / 171 °
AIS Source: 5255
Weather:
Wind: 21 knots
Wind direction: N (13°)
Air Temperature: 26°C
Ex Names History: ----
