The CHARLEY GRAVES is a Self Erecting Tender Assisted drilling unit capable of operating in water depths up to 500 ft. A 13-5/8in 10,000 psi BOP is used to obtain maximum drilling depths up to 20,000 ft.
Rig Type: Self-Erecting Tenders
Design: Marathon LeTourneau,
Builder: Far East Livingston Shipyard, Singapore
Year Built: 1975
Classification: ABS A-1 Barge Self Erecting Tender
Flag: Marshall Islands
Accommodation: 99 berths
Helideck: 80 ft x 70 ft, rated for S-61 helicopter
Station Keeping: Moored
Max Drill Depth: 20,000 ft / 6,096 m
Max Water Depth: 500 ft / 152 m
Operating Conditions: Wave: 12 ft; Wind: 45 knots
Technical Dimensions
Length: 300 ft 91 m
Breadth: 70 ft 21 m
Depth: 21 ft 6 m
Ocean Transit Draft: 17 ft 5 m
VDL - Operating: 7,026 st 6,376 mt
Capacities
Liquid Mud: 2,553 bbls 14,334 cu ft 406 cu m
Drill Water: 11,000 bbls 61,759 cu ft 1,748 cu m
Potable Water: 1,632 bbls 9,163 cu ft 259 cu m
Fuel Oil: 2,682 bbls 15,058 cu ft 426 cu m
Bulk Mud: 5,775 cu ft 163 cu m
Bulk Cement: 5,775 cu ft 163 cu m
Sack Material: 4,700 sacks
Drilling Equipment
Derrick: Brown Services 152 ft telescoping mast with 1000 kips GNC, 800 kips static hookload
Drawworks: National 1320-UE, 2000 hp input with Elmagco Model 6032 auxiliary brake
Top Drive: Varco TDS-3HE
Rotary: National C-375, 37½in opening independent drive
Pipe Handling: Manual
Mud Pumps: 2 x National 12-P-160, 1600 hp each
Shale Shakers: 3 x Derrick Floline Cleaner 2000
Desander: N/A
Desilter: N/A
Mud Cleaner: 2 x Sweco Model SC-4 with 8 x 4in cones
BOP: 1 x 13-5/8in Hydril GK 5K annular; 1 x 13-5/8in Cameron U 10K single; 1 x 13-5/8in Cameron Type U 10K double
Diverter: 1 x Hydril MSP 30in 500 psi annular; 1 x 21¼in 2K Hydril annular & diverter spool with 2 x 12in outlets
Control System: Koomey T25180-35
Choke & Kill: Cameron 4in 10,000 psi with 1 x manual choke and 1 x hydraulic remote choke
Cementing: Halliburton Model SDH-4 (third party equipment)
Machinery
Main Power: 3 x EMD Model MD 16-645-E diesel-electric generating sets
Emergency Power: 1 x Caterpillar D-379, 500 hp @ 1200 rpm turbocharged diesel engine, driving 1 x Kato 400 kW AC generator
Power Distribution: Ross Hill Model 1600 SCR System
Deck Cranes: 1 x Favco Model PC150 diesel-hydraulic, 180 ft. boom, 95 st @ 40 ft; 1 x Hydracrane Model HL 30-90, 90 ft boom, 20 st @ 20 ft
Mooring Equipment
Winches: 4 x Skagit Model DMW-150 electric double drum
Wire/Chain: 8 x 3,300 ft x 2in wirerope
Anchors: 8 x Stevin 15,000 lbs
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