Petroleum Drilling Equipment

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Petroleum Drilling Equipment
02
03
1
Drilling rigs
In the 1950s, China began to manufacture petroleum drilling
equipment and their components and built its complete oil industrial
product system. The main petroleum machinery manufacturers have
set up a complete quality assurance system and obtained the
certificate of ISO 9000 quality assurance system and have been granted
the right to use API certificates.
CAOIMPEX, with expertise in complete rig package supply, chooses the
best quality products in, but not limited in China, to match with each
other to get the best performance of a complete rig. Presently, we have
been able to supply 1, 000-12, 000 m, (3, 280 ft-40, 000 ft) land drilling
rigs, mechanical drilling rigs, SCR electrical drilling rigs and VFD
electrical drilling rigs. For small rigs under 1, 200 HP, we can supply fast-
move type rigs, either truck-mounted, skid-mounted or trailer-moved.
CAOIMPEX can also provide matched equipment and tools to the rigs,
such as power system, air system, mud pumps, BOPs, motors, tanks,
mud treatment equipment, instruments, and cementing units, etc.
With more than 50-year experience, China has developed some new
types of drilling rigs, including offshore drilling rigs, helicopter lifting
rigs, all-on-trailer rigs, quick skid and cluster well rigs, extreme low
temperature rigs, etc.
Introduction
As per China Petroleum Industrial Standard,
we define the rig model as below:
ZJ
ZJ
ZJ means Drilling rig;
Nominal well depth, m/100
Max hook load kN
Rig dirve type, L means mechanical chain drive,
D means Electrical SCR drive, DB means Electrical VFD drive
Rig move type, C means truck mounted, T means trailer
moved, if lack, means skid type
1.1
Define the
Rig Model
04
05
1.2
Electrical Driven
Drilling Rigs
1.2.1
Characteristics
D.C. motor driven drilling rig adopts an AC-SCR-DC power system. The drawworks, the rotary
table and the mud pump can accomplish step less speed.
For AC variable frequency motor driven drilling rigs. Any hoisting speeds, rotary speeds and
pump strokes can be adjusted and any speed regulation & power utilization of them can be
improved as a result of taking VFD and numerical control technology.
The hydraulic disc brake is used as main brake of the drawworks. Auxiliary brake of the
drawwworks can be either an eddy current brake.
The chain box driving the rotary table is placed under the rig floor. There is a large operational
zone for ease of installing and aligning the rotary table.
The drawworks is provided with auto feed driller to realize auto drilling of main motor or small
motor.
The rotary table has a gearbox with two gears, which is chain or gear driven.
The equipment on the floor and the mast can be installed at ground level and raised to
position with power of drawworks due to using a parallelogram integrally raising substructure
(height: 9m/10.5m).
Main components are made to API Spec.
1.2.2
Model & Parameters of DC Motor Driven
Drilling Rigs
Model
ZJ40/2250DZ
ZJ50/3150DZ
ZJ70/4500DZ
ZJ90/5850DZ
Nominal
drilling depth
m
127
114
Maximum hook load kN
Sheave O.D. of traveling block mm
Drawworks rated power kW
Transmission of drawworks
I.D. of swivel stem mm
Max number of lines for traveling block
Dia. Of wire line mm
Mud pump power kW
Rotary opening diameter mm
Rotary speeds
Working height of mast m
Drill floor height m
Clear height of drill floor m
2000-3200
2500-4000
2250
1120
735
4
75
10
32
735
520.7
2
7.5
6.26
2800-4500
3500-5000
3150
1270
1100
4
75
12
35
960
698.5
2
7.5
7.62
4000-6000
4500-7000
4500
1524
1470
4
75
12
38
1180
952.5
2
9
7.42
5000-8000
6000-9000
5850
1524
2210
4
75
14
42
1470
1257.3
2
10.5
8.7
06
07
1.2.3
Models & Specifications of AC
Variable-frequency Driven Drilling Rigs
Model
Nominal drill
depth ( 114)
m
Max hook
load rating
KN
Max number of lines
for traveling block
Dia. Of wire line
mm
Sheave O.D.
Of traveling block
mm
I.D. of swivel stem
mm
Rated power
of drawworks
kw
Transmission of
drawworks
Dia. Of opening
mm
Rotary speeds
Power of each
mud pump
kw
Working height
of mast
m
Height of
drill floor
m
Clear height
of drill floor
m
ZJ40/2250DB
2500-4000
2250
10
32
1120
75
735
Stepless speedr egulation
520.7
Stepless speed regulation
735
43
7.5
6.26
ZJ50/3150DB
3500-5000
3150
12
35
1270
75
1100
Stepless speedr egulation
698.5
Stepless speedr egulation
960
45
7.5
7.62
ZJ70/4500DB
4500-7000
4500
12
38
1524
75
1470
Stepless speedr egulation
952.5
Stepless speed regulation
1180
45
9
7.42
ZJ90/5850DB
6000-9000
5850
14
42
1524
75
2210
Stepless speed regulation
1257.3
Stepless speed regulation
1470
46
10.5
8.7
1.3
Mechanical-electrical
Drilling Rigs
1.3.1
Characteristics
Power by three-(or four)-diesel-engine linkages, which are
connected with couplers and reducer casings.
Easy installation and better sealing as a result of taking an
integral chain box or V-belt compound transmission unit.
The drawworks is equipped with the grooved drum and
shifting a gear for it is carried out by air cylinders. The
hydraulic brake is regarded as main brake and the eddy
current brake as auxiliary brake.
The drawworks is equipped with an auxiliary raising
device. Prior to starting the diesel engine, raise the mast in
advance. In case of the master clutch failure and power
failure to transferring to the drawworks, the device is used
for lifting the drill tools to reduce accidents and realize safety
drilling operations.
The rotary table is driven independently by AC variable
frequency motor and can accomplish step less speed
regulation with 0-240r/min. AC is supplied by an auxiliary
generator set.
Mechanical parts of rigs are in compliance with API Spec.
08
09
1.3.2
Model & Parameters of Mechanic-electrical
Drilling Rigs
Model
ZJ40/2250LDB
ZJ50/3150LDB
ZJ70/4500LDB
Nominal drilling
depth (m)
4-1/2” DP
5” DP
Max hook load kN
Max number of lines for traveling block
Wire line dia. mm
Sheave O.D. of traveling block mm
I.D. of swivel stem mm
Rated power of drawworks kw
Transmission of drawworks
Dia. Of rotary table opening mm
Rotary speeds
Power of each mud pump kw
Number of diesel engines
Number of integral chain boxes
Working height of mast m
Height of drill floor m
Clear height of drill floor m
Notes
2500-4000
2000-3200
2250
10
32
1120
75
735
4
698.5
Stepless speed regulation
960
3
1
43
6
4.76
3500-5000
2800-4500
3150
12
35
1270
75
1100
4
952.5
Stepless speed regulation
1180
3
1
45
7.5
6.26
4500-7000
4000-6000
4500
12
38
1524
75
1470
6
952.5
Stepless speed regulation
1180
4
1
45
9
7.7
L-chain compound transmission DB-rotary table is driven by VFD
1.4
Mechanical Driven
Drilling Rigs
1.4.1
Characteristics
The drilling rig is driven by diesel engines, hydraulic coupling &
chain compound box or diesel engines, reducers & narrow V-belt,
which provides smooth mechanical power to the drawworks. A
number of hoisting speeds and rotary speeds are available.
The drawworks is divided into two sections so as to install the
main drawworks at ground level. The tapered gear box and
universal shaft transmit smooth power to the equipment on the
drill floor for easembly/disassembly.
The main drawworks utilize air clutch for shifting gears, which
are suitable for remote control. The catwalk is equipped with a
sand reel of entire & combination construction. The construction
can be separately lifted on the drill floor without a heavy-duty
crane.
The main brake system uses either a band brake or a hydraulic
disc brake. And the auxiliary brake adopts either an eddy current
brake.
The chain driven rig is driven by the integral enclosed
compound chain box (or narrow V-belt) and coupling. During any
rig moves, it is unnecessary to dismantle the chains (or narrow V-
belt) for fast installation.
The substructure is of a box-on-box type. It is simple in
structure and easy to install. It is applicable for mounting B.O.P
installations.
10
11
1.4.2
Model & Parameters of Mechanical Driven
Drilling Rig
Model
ZJ50/3150L(J)
ZJ70/4500L
Nominal
drill depth
m114 mm
127 mm
Max hook load kN
Max number of lines for
traveling block
Dia. Of wire line mm
Sheave O.D. of
traveling block
mm
I.D. of swivel stem mm
Rated power of
drawworks
kw
Transmission of drawworks
Dia. Of rotary
table opening
mm
Rotary speed
Power of each mud pump kw
Number of transmission unit
Working height of mast m
Height of drill floor m
Clear height of drill floor m
Notes
2500-4000
2000-3200
2250
10
32
1120
75
735
4 forward
6 forward
2 reverse
2 reverse
698.5
4 forward 6 forward
2 reverse 2 reverse
960
3
43
6
4.76
4 forward
6 forward
2 reverse
2 reverse
4 forward 6 forward
2 reverse 2 reverse
3500-5000
2800-4500
3150
12
35
1270
75
1100
1180
3
45
7.5
6.26
4500-7000
4000-6000
4500
12
38
1524
75
1470
952.5
1180
4
45
9
7.7
6 forward
2 reverse
6 forward
2 reverse
L-Chain Compound Transmission J-Narrow V-belt Compound Transmission
Drilling Rig Components
2
2.1
Crown blocks
The sheave grooves are intermediate frequency quenched so as to improve surface
hardness and extend service life of sheaves.
The rope guard prevents the rope from running out of the sheave grooves.
Equipped with wooden bumper blocks and retainer net.
Equipped with sand line sheaves and auxiliary sheaves.
The sheaves and the bearings are interchangeable with those of matching traveling block.
The crown blocks conform to API Spec. 4F 8A/8C and API monogram is permitted to be
used.
Design Features
Model
Tc135
Tc170
TC225
TC315
TC450
Tc585
Max hood
load
KN
O.D. of
sheaves
mm
Number of sheaves
Dia. of
wire line
mm
Overall
dimension
mm
L
W
H
Weight
kg
1350
915
5
29
2500
2050
1920
2400
1700
1005
6
29
2687
2150
2046
2920
2250
1120
6
32
3200
3347
3640
5310
3150
1270
7
35
3295
2776
2514
7400
4500
1524
7
38
3068
2906
3576
9500
5850
1524
8
42
3070
3000
3600
10000
12
13
2.2
Traveling blocks
Design features
The sheave grooves are intermediate frequency quenched
so as to improve surface hardness and extended service life of
wire line.
The sheave and the bearings are interchangeable with those
of corresponding crown blocks.
The travelling blocks conform to API Spec. 8A/8C and API
monogram can be used.
Specifications of Travelling blocks
Model
YC90
YC135
YC170
YC225
YC315
YC450
Yc585
O.D. of
sheaves
Mm
Number of
sheaves
Dia. of
wire line
mm
Overall
dimension
mm
L
W
H
Weight
kg
Max hood
load
KN
900
762
4
26
1500
806
533
1810
1350
915
4
26
1800
960
610
2200
1700
915
5
29
2100
960
630
3010
2250
1120
5
32
2294
1190
630
3805
3150
1270
6
35
2680
1350
974
6842
4500
1524
6
38
3075
1600
800
8135
5850
1524
7
42
3100
1600
965
9600
Hooks
2.3
Design features
The body, the bail and the bail support are with special alloy steel.
Equipped with a hydraulic snubber assembly to protect drill pipe joints
when making up/breaking out connections.
At the hook there is a reliable safety device.
The primary-load-carrying parts of hook are subject to NDE test.
The hooks conform to API Spec. 8A/8C and are applied API monogram
on them.
Specifications of Hooks
O.D. of
sheaves
Mm
Number of
sheaves
Dia. of
wire line
mm
Overall
dimension
mm
L
W
H
Weight
kg
Max hood
load
KN
Model
DG90
DG135
DG170
DG225
DG315
DG450
Dg585
900
155
116
180
2000
680
600
1800
1350
165
140
180
2200
720
616
1910
1700
180
150
180
2450
750
630
2020
2250
190
160
180
2545
780
750
2180
3150
220
180
200
2953
890
830
3410
4500
220
180
200
2950
890
880
3496
5850
238
180
200
3156
930
930
3900
Design features
With standard bails and double pin alloy steel sub.
The wash pipe and the packing assembly are cartridge type and can be
replaced on the floor without disconnecting the rotary hose and/or
gooseneck.
The gooseneck is provided with an outlet for wire line logging.
With standard gooseneck joints. Threads are in compliance with API Std 5B.
The swivels conform to API Sec. 8A/8C and are used API monogram on
them.
Specifications of Swivels
14
15
2.4
Swivels
Model
Overall
dimension
mm
L
W
H
Weight
kg
Coupling
thread
To stem
To kelly
Hook clearance
over gooseneck
mm
Max static
load rating
KN
Dia. Of stem
mm
Max speed
r/min
Max working
pressure
Mpa
SL90
SL135
SL225
SL450
Sl585
900
64
300
25
435
4 1/2 REGLH
6 5/8 REGLH
2380
750
800
1200
1350
64
300
35
495
4 1/2 REGLH
6 5/8 REGLH
2505
758
840
1341
2250
75
300
35
540
6 5/8 REGLH
6 5/8 REGLH
2880
1026
1065
2402
4500
75
300
35
549
7 5/8 REGLH
6 5/8 REGLH
3015
1096
1065
3310
5850
75
300
35
584
7 5/8 REGLH
6 5/8 REGLH
3115
1143
990
4000
Rotary tables
2.5
Design features
The pinion and the gear are made of alloy steel.
Pin transmission type is suitable foe API standard square Kelly or
hexagonal Kelly roller bushing. Long and short slips are applicable.
With API casing bushing and special sling.
The rotary tables conform to API specification 7K and are applied API
monogram on them.
Specifications of Rotary Tables
Model
Overall
dimension
mm
L
W
H
Weight
kg
Max static
load
KN
Dia. Of stem
mm
Max speed
r/min
Max working
pressure
Mpa
Gear ratio
Table axis to
center inner
row sprocket teeth
mm
ZP175
ZP205
ZP275
ZP375
ZP495
444.5
1118
1350
14000
300
3.58
1935
1280
585
3888
520.7
1353
3150
23000
350
3.22
2292
1475
668
5530
698.5
1353
4500
28000
250
3.67
2392
1670
685
6163
952.5
1353
5850
33000
300
3.56
2468
1810
718
8026
1257.3
1651
7250
37000
300
3.93
2940
2184
813
11626
16
17
Design features
Chain with high accuracy and high strength are pressure lubricated.
On the drum there is a spiral groove. The low-speed & high-speed ends of
drum shaft are equipped with a ventilating air clutch. The brake rim (or disc)
is water cooled and the surface is intermediate frequency quenched, which
increases long service life.
The contours of the sprocket teeth are intermediate frequency quenched.
All clutches of shifting gears are of involute spline type.
The main brake can be either a band or disc brake system. The auxiliary
brake can be realized by an eddy current brake (water or air cooled).
Specifications of Mechanical
Driven Drawworks
2.6
Mechanical
Driven Drawworks
Model
Nominal
drill depth
m
Drill pipe F114
Drill pipe F127
Rated input power
kw
Max pull of fast line
kN
Dia. Of wire line
mm
Drum (Dia Length)
Band brake
mm
Brake rim
(Dia Width)
mm
Drum (Dia Length)
Disc brake
mm
Drake disc
(Dia Width)
mm
Auxiliary brake
Overall dimension
mm
L
W
H
Weight
kg
2500-4000
2000-32000
735
275
32
640 1237
1168 265
640 1139
1500 76
DS40
6450
2560
2482
28240
3500-5000
2800-4500
1100
340
35
685 1245
1270 267
685 1138
1600 76
DS50
7000
2955
2780
45210
4500-7000
4000-6000
1470
485
38
770 1439
1370 267
770 1361
1600 76
DS70
7930
3194
2930
43000
JC40
JC50
JC70
2.7
Design features
On the drum there is a spiral groove. The low-speed & high-speed ends of drum
shaft are equipped with a ventilating air cultch.
The hydraulic disc brake is regarded as main brake. The disc brake is water or air
cooled.
The eddy current brake (air & water cooled) is considered as an auxiliary brake.
Air gear-shifting structure.
Chain drive structure.
Split structure.
DC Motor Driven
Drawworks
Specifications of DC Motor Driven Drawworks
Model
Nominal drill depth
m
Drill pipe F114
Drill pipe F127
Rated input power
kw
Max pull of fast line
KN
Dia. Of wire line
mm
Drum (Dia Length)
Band brake
mm
Brake rim (Dia Width)
mm
Drum (Dia Length)
Disc brake
mm
Drake disc (Dia Width)
mm
Auxiliary brake
Overall dimension
mm
L
W
H
Weight
kg
Number Rated
Power of motor
kw
Rated speed of motor
R/min
m
Capacity of sandline reel
(F14.5 wire line)
Sandline reel (Dia. Width)
JC40D
JC50D
JC70D
JC90D
2500-4000
2000-3200
735
2×580
880/970
32
275
640 1235
1168 265
640 1139
1500 40
356 1245
4000
DS40
6600
3716
2990
40000
3500-5000
2800-4500
1100
2×800
970
35
340
685 1245
1270 267
685 1138
1600 76
356 1245
5000
DS50
6800
4537
2998
48000
4500-7000
4000-6000
1470
2×800
970
38
485
770 1439
1370 267
770 1361
1600 76
356 1245
6400
DS70
7670
4585
3197
61000
6000-9000
5000-8000
2210
3×800
970
45
630
914 1556
1575 264
914 1556
1600 76
356 1448
7500
DS90
7874
5486
2997
70000
18
19
Design features
On the drum there is a spiral groove.
Auto feed driller.
The hydraulic disc brake is considered as main brake. The disc brake is
water or air cooled.
The auxiliary brake is of motor dynamic braking.
Single shaft drawworks.
Transmission is made by two-stage gear reducer and shifting-gear is
manual done.
2.8
Model
Nominal
drill depth
m
Drill pipe F114
Drill pipe F127
Rated input power
kw
Max pull of fast line
kN
Dia. Of wire line
mm
Drum (Dia Length)
mm
Drake rim(Dia Width)
Mm
Auxiliary brake
Overall dimension
mm
L
W
H
Weight
kg
AC Variable Frequency
Motor Driven Drawworks
Specifications of VFD Single Shift Drawworks
Number Rated Power
of motor
Kw
Rated speed of motor
r/min
Power of Motor
for Auto Driller
Kw
Transmission Mode
JC40DB
JC50DB
JC70DB
JC90DB
2500-4000
2000-3200
720
1 720
601
32
275
640 1139
1500 76
45
One-reduction single-pinion
Motor dynamic braking
4230
3000
2630
18600
3500-5000
2800-4500
1440
2 720
600
35
340
685 1138
1500 76
45
One-reduction double-pinion drive
Two-reduction double-gearbox drive
Motor dynamic braking
4360
3205
2825
26000
4500-7000
4000-6000
2200
2 1100
661
38
485
770 1439
1520 76
45
Two-reduction double-gearbox drive
Motor dynamic braking
7886
3298
2695
47500
6000-9000
5000-8000
3300
3×1100
661
45
630
914×1556
1800×76
45
Two-reduction double-gearbox drive
Motor dynamic braking
9300
3300
3100
65000
2.9
Design features
The rotor and stator are made of high quality magnetic materials and
subjected to heat treatment.
Coils are made of single polymide wire wrapped with glass fiber and are
dip coating of vacuum pressure in twice. The insulation level is Class F or H.
The cooling water is supplied by a circulating water pump to ensure that
the heat generated by the brake can be dissipated even under maximum
load.
To connect with the drum shaft by means of involute spline tooth clutch.
Eddy Current brakes
Specifications of Eddy Current Brakes
Model
DS40
DS50
DS70
DS90
Rated stop torque KNm
Applicable F114 drill depth m
Max exciting power kw
Exciting coil (H Class)
Amount cooling water L/min
Max temperature of inlet water
Max temperature of outlet water
Weight kg
44
2500-4 000
9
4
190
42
72
5830
60.76
3500-5000
12
4
285
42
72
7285
107.8
4500-7000
23.5
4
560
42
72
12300
110
6000-9000
25
4
600
42
72
14000
20
21
Design features
The power end: The housing is welded steel-plate construction. It is stress-relieved
after welding. The drive gears are involute type gears which allow smooth operating,
high efficiency and long life. The crankshaft is a hollow one-piece steel casting. The
power end is splash-lubricated.
The fluid end: The suction and the discharge flanges conform to ASA and API
specifications.
The piston rod is connected with an intermediate rod by means of clamps to realize
quick assembly & disassembly.
The valve seat bores have a bottom shoulders. The pistons and liners are lubricated
and cooled by an independently spraying pump to have a longer service life.
Versatility in expendables.
2.10
3NB-Series
Mud Pumps
Specifications of 3NB Mud Pumps
Model
3NB500C
3NB1000C
3NB1300C
3NB1600
power kw(ps)
Strokes per minutes pm
Stroke mm
Gear ratio
Speed of driving shaft r/min
Max working pressure MPa
Max Dia. Of liner mm
Dia. Of suction pipe mm
Dia. Of discharge pipe mm
Overall dimension mm
L
W
H
Weight kg
368(500)
95
254
3.82
363
30
160
254
100
4220
2640
2430
15940
735(1000)
110
305
3.83
423
35
170
305
100
5170
2809
2530
21450
956(1300)
120
305
3.81
457
35
180
305
100
5010
1942
1918
23000
1176(1600)
120
305
3.81
457
35
190
305
100
4450
2850
2077
29700
2.11
Design features
Open-face masts.
Raising mode: integral and bootstrap.
Masts are installed at ground level and divide into sections.
Masts stems are of beam structure for easy of assembly/disassembly and
transportation.
Two hydraulic cylinders (Left & Right) are provided to be used as snubber
when raising masts and as primary push-pull force when lowering masts.
Masts conform to API Spec. 4F, and are applied API monogram on them.
K type masts-open face
Specifications of K Type Masts-open Face
Model
JJ225/43-K
JJ315/45-K
JJ450/45-K
JJ585/46-K
JJ675/48-K
JJ900/52-K
Mast height
Max hook load
Setback capacity
(41/2 Stands)
Max wind rating
m
ft
kN
US ton
lbs
m
ft
km/h
knot
43
141
2, 250
250
500, 000
4, 000
13, 000
172
93
45
147
3, 150
350
700, 000
5, 000
16, 400
172
93
45
147
4, 500
500
1, 000, 000
7, 000
22, 900
172
93
46.5
152
5, 850
650
1, 300, 000
8, 000
26, 200
172
93
48
157
6, 750
750
1, 500, 000
9, 000
30, 000
172
93
52
170
9, 000
1, 000
2, 000, 000
12, 000
39, 370
172
93
22
23
Design features
Masts are equipped with self-elevating raising device and integrally raised &
lowered in sections with power of drawworks and hydraulic wireline winch. They are
applicable for offshore drilling platform or limited areas.
Masts' leg has alignment mechanism and jack.
Masts conform to API Spec. 4F and API monogram can be used.
2.12
Bootstrap Masts
Specifications of Bootstrap Masts
Model
JJ450/47-K
JJ315/45-KZJ1J
J315/45-KZJ
Max static load rating kN
Working height m
Top span (front side) m
Bottom span m
Height of monkey board m
Capacity of monkey board m
Wind load
capacity
Under non-working condition
(no stands, no hook load) km/h
Under non-working condition
(full stands, no hook load) km/h
Raising & lowering mast km/h
Weight kg
4500
46.75
2388 2667
8.85
26.2
26.5
6400
198
61
30
117361
Offshore
3150
45
2.1 2.05
9.11
26.5
25.5
24.5
5000
172
130
30
83500
Land
3150
45
2.1 2.05
6.5
26.5
25.5
24.5
5000
172
130
30
67000
Land
2.13
Design features
Three kinds of substructures: box-on-box, two-step raising & swing-lift.
The box-on-box structure: The front platform is suitable for installing
standard BOP and the rear platform for installing heavy main drawworks
and transmission groups.
The two-step structure: The equipment on the drill floor can be
installed at ground level. The mast is raised when the drill floor is in the
lower position. Then the floor and entire mast are raised together. The
drill floor is equipped with two hydraulic cylinders, which serve the
function of snubbing while raising the floor and push-back while
lowering the floor.
The swing-lift structure: The substructure is raised integrally together
with the mast. The mast, the drill floor, and the equipment on the drill
floor are all installed at ground level and raised with power of drawworks.
The substructures conform to API Spec. 4F and are used API
monogram on them.
Specifications of Substructures
Substructures
Model
DZ225/7.5-S
DZ315/9-S
DZ450/9-XD
DZ450/10.5-S
DZ585/12-S
Height of drill floor
Clear height of drill floor
Rotary table beam load rating
Stand load rating
Max static hook load
Bottom span of mast
Weight
m
m
KN
KN
KN
m
Kg
7.5
6.26
2250
1150
2250
8
101760
9
7.62
3150
1600
3150
8
142000
9
7.73
4500
2200
4500
9
150188
10.5
8.92
4500
2200
4500
9
207000
12
10
5850
2880
5850
10
220000
24
25
Offshore engineering projects include concept design, general layout, loading
analysis and calculation for structure & mast by computer, detail design for steel
construction, piping and electric, procurement for equipment and materials,
supply for drilling rigs, package fabrication and equipment installation, onshore
test and precommissioning, offshore installation, hook-up and commissioning.
3
Offshore Engineering