GSF Explorer

7,800 Foot Ultra-Deepwater Drillship.

General Description 

Design	GlobalSantaFe
Dimensions	619 x 116 x 51 ft.
Loadline draft (drilling)	35 ft.
Loadline displacement (max draft)	55,978 lt.
Maximum variable load (drilling)	47,066 kips
Quarters capacity	140 persons
Operating water depth (as outfitted)	7,800 ft.
Operating water depth (as designed)	10,000 ft.

Drilling Equipment 

Derrick	170 ft. x 61.3 ft. x 41.7 ft. Morinoak with a static hook load capacity of 2,000,000 lbs. with fourteen lines
Drawworks	National-Oilwell 2040, 5,000 hp, driven by four GE 752 DC motors, with hydraulic disc brakes and a Baylor 7838 auxiliary electric brake
Rotary table	National Oilwell C-495, 49-1/2 in. hydraulic motor driven, non-drilling
Top Drive	Varco TDS-1000 AC, 1000 short tons, continuous drilling torque rating 62,500 ft-lbs., with Varco PH 100 pipe handler
Pipe handling system	Westech horizontal drill pipe racker capable of handling 30,000 ft. of 5-7/8 in. drill pipe in triples Varco PRS-4i vertical pipe racker capable of handling BHA’s, drill pipe landing string and casing (13-5/8 in. and smaller) to a maximum setback of 800 kips
Motion compensator	Shaffer 1,000,000 lb. CMC with 25 ft. stroke and 2,000,000 lb. static load capacity
Mud Pumps	Three National-Oilwell 14-P-220, 2,200 hp triplex pumps each driven by two GE 752 Hi-Torque DC traction motors, rated to 7,500 psi One National-Oilwell 12-P-160, 1,600 hp driven by two GE 752 Hi-Torque traction motors, rated at 5,000 psi.
Solids Control	2 x Derrick FLP-28/200 Flo-line Scalping Shakers, 4 x Derrick FLC514 primary shakers, one Fluid Systems 500 BSX mud cleaner, 2 x Brandt DG – 10 degassers, GlobalSantaFe design, 350 cu. ft. mud/gas separator with 10 in. vent line
Propulsion System	Two fixed pitch variable speed reversing propellers each powered by three 2,200 hp DC motors (13,200 hp total); five fixed pitch variable speed reversing tunnel thrusters each driven by 2,000 hp DC motor; four retractable azimuthing thrusters each driven by 3,000 hp motor; total station keeping horsepower 35,200

Storage Capacities 

Liquid Mud	6,499 bbls.
Base oil	1,618 bbls.
Brine	5,382 bbls.
Bulk material	47,160 cu. ft.

Power Equipment

Main Power	Four EMD MD 16E9B diesel engines each rated at 3,070 bhp, each driving a 2,200 kw, 4,160 VAC generator; five Nordberg FS-1316-HSC, 4,900 hp diesel engines each driving a 3,500 kw, 4,160 VAC generator
Emergency Power	One Detroit diesel 16V-149 emergency generator set providing 825 kw

Subsea Equipment

Riser	Stewart & Stevenson SSQR-F 2,000,000 lbs., 21 in. OD with 3 in., 15,000 psi choke & kill lines
Tensioners	Ten 200,000 lbs. single Shaffer riser tensioners with 50 ft. wireline travel

BOP Equipment

Diverter System	Stewart & Stevenson complete shutoff 21-1/4 in. through-bore, 500 psi with Oil States super flex joint
18-3/4 in. System	Two Shaffer SL 10,000 psi annular preventers, two Cameron 15,000 psi double rams and one Cameron 15,000 psi single ram
Cranes	Two Seatrax 7228 cranes, one with 110 ft. boom, one with 100 ft. boom,  rated for 65 short tons at 60 ft. radius; two Seatrax 4220, one with 110 ft. boom, one with 90 ft. boom, rated for 25 short tons at 35 ft. radius
Dynamic Positioning System	Triple redundant dynamic positioning system with quadruple DGPS position reference system and acoustic backup positioning system

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