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The Fleet  Our Rigs  List by Rig Type  GSF Aleutian Key

Fleet Specifications

GSF Aleutian Key 
2,300 Foot Semisubmersible Drilling Vessel

General Description 

Design Friede & Goldman Enhanced Pacesetter graphic
Dimensions 260 ft. by 200 ft. by 111 ft.
Normal operating draft 66 ft. 
Towing Draft 40 ft. 
Maximum variable load (drilling) 5,600 kips
Quarters capacity 120 persons
Operating water depth
(as outfitted)
2,300 ft.
Operating water depth
(design)
2,300 ft.

Drilling Equipment 

Derrick 182 ft. by 40 ft. Pyramid, with a static hook load capacity 1,000,000 lbs. with 12 lines
Drawworks Oilwell E-3000, driven by two GE 752 DC motors, complete with Baylor 7838 electric brake
Rotary table Oilwell A 49 -1/2 in., with independent drive using a GE 752 DC motor with 2-speed transmission
Top Drive Varco model TDS-4S, 650 ton, with a GE 752 DC hi-torque motor, rated to 45,500 ft.-lbs. continuous drilling torque in low gear, complete with a PH-85 pipehandler
Motion compensator Vetco, with 20 ft. stroke and 650 s. tons heave compensation
Mud Pumps Three Oilwell A-1700 PT, 1,700 hp, triplex pumps, each driven by two GE 752 traction motors
Solids Control Three Brandt Dual Tandem scalping shakers cascading onto four Thule VSM-300 linear motion shakers

Storage Capacities 

Liquid Mud 1,885 bbl., including processing pit
Base oil 2,753 bbl.
Brine 1,787 bbl.
Bulk material 8,832 cu. ft.

Power Equipment

DC  Nine Tech Power SCR units, each rated at 1,000 kw.
AC  Four EMD 16-645 E8 diesel engines, 8,400 hp, each driving one EMD, 2,625 kva generator

Subsea Equipment

Riser 2,750 ft. of Vetco MR-6C, 21 in. O.D. riser
Tensioners Eight 80,000 lb. riser tensioners with 50 ft. line travel and four Vetco 16,000 lb. guideline tensioners with 40 ft. line travel

BOP Equipment

Diverter System Regan KFDS, 49-1/2 in., with two 16 in. discharge lines and two 16 in. hydraulically operated ball valves
18-3/4 in. System Two Shaffer 5,000 psi annular preventers and two Shaffer 10,000 psi double ram preventers
Cranes One National OS-435 crane with 120 ft. boom, dynamically rated for 48.8 s. tons at 30 ft. radius, one National-Dreco 72DNS 130-2 crane with a 130 ft. boom, dynamically rated for up to 32.3 s. tons at 80 ft. radius, and one Weatherford OM-455 crane with 100 ft. boom, dynamically rated for 28.3 s. tons at 20 ft. radius
Mooring System Four Skagit double drum winches, with eight mooring lines consisting of 8,500 ft. of 3 in. EIPS-IWRC wireline, eight 60 ft. 4-1/2 in. ORQ chain and eight each Stevpris MK5 26,320 lb anchors

Inquiries should be directed to the Marketing Department Houston 15375 Memorial Drive Houston TX 77079-4101 (281) 925-6000 Fax (281) 925-6010