Nan Hai VI Managed by Maersk Drilling Semi-submersible drilling rig

Managed by Maersk Drilling
Nan Hai VI
Semi-submersible
drilling rig
Nan Hai VI
Maersk Drilling
Nan Hai VI
TYPE
Enhanced Pacesetter 1A1 Column Stabilized semisubmersible drilling rig
The Nan Hai VI is a semi-submersible deepwater drilling rig,
managed by Maersk Drilling.
BUILT
1982
CLASS
CCS (Chinese Classification Society): Overall
DNV: Hull, machinery
FLAG
Chinese
Main advantages
•Top Drive TDS-35
•Three 5,000 psi mud pumps
•7,622 m (25,000 ft) drilling capacity
•Riser tensioner capacity 6 x 80,000 lbs
•HP/HT drilling
•18 ¾” 15,000 psi BOP system
•Driller’s cabin, fully enclosed, air conditioned with MD/
Totco Drill watch system and traditional brake handle
•Accommodation for 100 people
Nan Hai VI
Maersk Drilling
Main particulars
DIMENSIONS
IMPERIAL
METRIC
Length overall
312 ft
95 m
Width overall
233 ft
71 m
Length of pontoons
260 ft
79 m
Pontoon (width / height)
49 ft / 25 ft
15 m / 7.7 m
Columns
35 ft x 32 ft
10.7 m x 9.8 m
Main deck (length / width)
225 ft / 145 ft
69 m / 60 m
Moonpool opening
21 ft x 41.7 ft
6.4 m x 12.7 m
Draft operational
65.6 ft
20 m
Draft transit
25 ft
7.6 m
PARTICULARS
IMPERIAL
METRIC
Rated drilling depth
25,000 ft
7,622 m
Hook load static
1,000,000 lbs
454 t
Rotary load static
1,760,000 lbs
800 t
Setback load
1,300,000 lbs
590 t
Variable deck load (max / transit)
5,000,000 lbs / 4,500,000 lbs
2,300 t / 2,020 t
Variable pontoon load (max / transit)
1,400,000 lbs / 1,400,000 lbs
650 t / 650 t
Total payload (max / transit)
6,500,000 lbs / 5,900,000 lbs
2,950 t / 2,670 t
Riser tensioner load
480,000 lbs
218 t
Pipe rack area
9,203 ft²
855 m2
WEATHER/DESIGN CRITERIA
IMPERIAL
METRIC
Water depth
197 ft – 1,813 ft
60 m – 553 m
Wind speed
65 knots
33.4 m/sec
Wave height (Hmax)
45 ft
13.7 m
Wave period
11 s
11 s
Current (surface)
1.5 knots
0.8 m/sec
CAPACITIES
IMPERIAL
METRIC
Drill water
13,781 bbl
2,198 m³
Potable water
3,246 bbl
516 m³
Fuel oil
13,540 bbl
2,154 m³
Liquid mud (mud pits)
1,873 bbl
297.8 m³
Bulk mud
9,182 ft³
260 m³
Bulk cement
5,700 ft³
161 m³
Sack material
1,980 ft³
184 m³
Accommodation
100 people
100 people
Nan Hai VI
Maersk Drilling
Key features
DRAWWORKS
Continental Emsco C3 Type II Electric driven by 3 GE 752-R800 motors.
DRILLING INSTRUMENTATION
MD to TCO Drill Watch.
DERRICK
Derrick gross capacity 1,000,000 lbs.
POWER SUPPLY
Four Nohab F312V. Total power 7,905 kW @ 720 rpm. One
emergency Genset Stamfort MC534D. 350 kW @ 1,800 rpm.
TOP DRIVE AND PIPE HANDLING
Varco TDS 3S with pipe handler, 650 t capacity. Varco AR
3200 – Big Foot Iron Roughneck for 3 ½” – 9 ¾” tubulars.
CRANES
Liebherr cranes, MTC 1400-60D LIT. Two 60 t @ 7 23 ft, 16.9 t
@ 75.5 ft. One model 50/900. 50 t @ 44.3 ft, 22.3 t @ 80 ft.
IN LINE COMPENSATOR
600 k Shafer 600,000 lbs compensating load.
HELICOPTER DECK
25.2 m x 25.2 m (82.68 x 82.68 ft) diameter helicopter deck
suitable for load capacity Sikorsky 61 helicopters.
ROTARY TABLE
Continental Emsco T4950.
MUD PUMPS
One Continental Emsco FB1600 triplex and two BPMMP F
1600 triplex. Rated for 5,000 psi.
WELL CONTROL EQUIPMENT
Ram BOP: 2 x double 18 ¾“ 15k Hydril. Annular Preventer:
1 x 16 ¾“ 10k Hydril Gx; 1 x 16 ¾“ 5k Hydril Gl. Diverter Regan:
KFDS-3. 500PSI/2 x 20” outlet; 10” pecker; max bore 24”.
MUD RETURN SYSTEM
Shakers 5 x VSM300. Mudtanks 1969 bbl.
TENSIONER SYSTEM
Riser tensioner system consisting of 6 x 80,000 lbs
(6 x 36,3t) shafer riser tensioners.
MOORING SYSTEM
Unit is fitted with 8 x Stevin MKIII anchors.
SAFETY EQUIPMENT
Lifesaving and fire fighting equipment in accordance with
CCS classification rules and in accordance with Chinese
Maritime Authority, draft of IMO MODU code 1979, SOLAS.
WATER DISTILLATION
2 x Alfa laval 30 m³/day.
ACCOMMODATION
Accommodation for 100 people.
Maersk Drilling
Nan Hai VI
Drilling features
TOP VIEW AND DRILL FLOOR
Maersk Drilling
SIDE VIEW
Nan Hai VI
October 2014
Head office:
Maersk Drilling
50, Esplanaden
1098 Copenhagen K
Denmark
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of service or equipment or performance that might be available (ii) intended to be no more than an invitation to treat (iii) subject to contract and possible change or alteration at our discretion and without notice to you (iv) not to be relied
upon by you for any purposes whatsoever when entering into any legally binding agreement with us.”