North Dragon
| GENERAL | |
| Name | : North Dragon |
| Flag | : Bahamas |
| Builder | : Yantai CIMC Raffles Offshore Limited |
| Designer | : Global Maritime & CIMC Raffles |
| Class | : DNV GL |
| Notations | : +1A1 Column Stabilized Drilling Unit (N), DRILL(N), HELDK-SH,CRANE(N),DYNPOS-AUTRO, POSMOOR-ATA, E0, CLEAN, ICE-T, WINTERIZED BASIC |
| PRINCIPAL DIMENSIONS | |
| LOA Pontoon | : 106,75m |
| Beam | : 73,70m |
| Elevation of main deck | : 42.0m |
| Deck Box | |
| Length | : 88,15m |
| Width | : 73,10m |
| Elevation of box bottom | : 34,00m |
| Draft | |
| Operation Draft | : 21,0m |
| Survival Draft | : 19,0m |
| Transit Draft | : 10,1m |
| Displacement | |
| Displacement | : 32,700-45,700T |
| DESIGN ENVIROMENT | |
| Survival condition | : Hs=17,3m |
| Operation condition | : Hs=8,0m |
| Transit condition | : Hs=5,0m |
| Sea water temperature | : 0°C to 32° C |
| Outside air temperature | : -20°C to 35°C |
| Structure design temperature | : -25°C |
| Fatigue life | : 20 years |
| OPERATION AREA | |
| World wide including NCS & UKCS | |
| OPERATING PARAMETTERS | |
| Water depth | : 500m (can extend to 1200m) |
| Drilling Depth | : 8000m |
| VDL | : 4100T |
| TANK CAPACITY | |
| Bulk barite/tank | : 362㎥ |
| Bulk Cement tank | : 356㎥ |
| Liquid mud (columns) | : 641㎥ |
| Mud pit | : 674㎥ |
| Brine tank | : 1,105㎥ |
| Base oil tank | : 632㎥ |
| Drilling water storage tank | : 1,737㎥ |
| Potable Water Tank | : 579㎥ |
| Fuel oil tank | : 4,681㎥ |
| Stop tank | : 298㎥ |
| DRILLING PACKAGE NOV | |
| Derrick capacity | : 680mT (1,500,000Ibs/750 short ton) |
| Base | : 15m x 16m |
| Rotary table | : 60-1/2″ |
| Top Drive | :1x680mT, 2x746kW, Break out 170 kNm, 7,500 psi |
| Draw work Dynamic | : 680mT, 4600 HP |
| Catwalk machine | : 1 x main catwalk
: 1 x aux catwalk |
| Finger board | : Triple 3 x Range2 (or 2xRange3) – 273 stands of 5 7/8″DP and – 56 stands of 13 3/8″ CSG and – 11 stands of 9 1/2″ DC and – 1 BHA |
| Vertical pipe handler | : NOV Hydraracker (column racker) |
| BOP handling | : 300T SWL BOP Trolley/Elevator |
| Crown block Passive comp.(CHC) Active comp. for CHC |
: 680mT
: 454mT (1,000 kips), 25′ : 25mT, 25′ |
| Aux. Roughneck | : Break out torgque 200 kNm |
| Main roughneck | : Break out torque 200 kNm |
| Knuckle boom Crane | : Rigging: 35T @ 6.5-30m |
| Riser tensioner | : 8 x 54.5T |
| BOP/WELL CONTROL | |
| BOP | : 18¾” 15000psi 5 rams, 1 annular.
(space for second annular) |
| Marine riser | : 50`length, total of 500 m |
| Slip joint | : 50` stroke length |
| MUD PUMPS | |
| 3 x 2200 HP 9″ x 14″ single acting triplex pumps, 7,500 psi | |
| HELIDECK | |
| 1 x Helideck suitable for Sikorsky S-61N, Super Puma,Sikorsky S92 | |
| ACCOMMODATION | |
| 130 single cabins (According to NORSOK requirements) | |
| MAIN POWER SYSTEM | |
| Main Generator Set | : 6x 5,535kWe |
| Emergency Generator | Two main genarators are outfitted as emergency generator |
| THRUSTER | |
| Thruster | : 6 x 4,500 kW fully azimuth thruster (86mT thrust each) |
| STATION KEEPING | |
| Dynamically Positioned | : DP3 (IMO) |
| 8 Point Mooring system | : 750m, 96mm wire, 385 mT Stall pull on 5’Th layer |
| MAIN CRANE | |
| Main Deck Crane | : 2 x 80 mT offshorecrane (Whip 17 mT) |