hydraulic power units

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Hydraulic Power Unit (HPU)A reliable power source forms the core in every hydraulic sys-tem and is essential to ensure operability of the various con-nected equipment and systems.

Maritime Hydraulics has provided the industry with more than200 Hydraulic Power Units (HPU) of different sizes and configu-rations during the last decades, spanning from small singleequipment units to large multiple ringline units, all designedwith special focus on reliability, safety, maintenance and envi-ronment.

General featuresTypically our electrically driven HPUs comprise modularised as-semblies with AC motors and state-of-the-art axial piston pumps,either submerged or externally mounted on a suitable oil reser-voir. Each unit is also equipped with necessary valves, regula-tors, filters and instrumentation in order to supply and maintainthe required pressure and flow.

Alternatives & optionsAn extensive portfolio of alternatives & options completes ourportfolio with intentions to suit any specific or special require-ments as for example:

• Stainless Steel materials• Noise Protective Cover/Housing• Operator Panels*• Coolers (Heat Exchangers)• Additional Instrumentation• Hazardous Area Design• Heaters• Starter Cabinets• Customer configurations

* Local, Remote and PLC control available

Hydraulic Power Units

7 motor ringline HPU

5 motor ringline HPU

2 motor HPU

Other performance data, and/or customer configurations are available upon request. a) @60Hz electric motor b) 50Hz el. motor

Portfolio: Pending on operational needs and requirements, the following types are available:

Model Performance data1) Product type 3) Motor qty.2) Pump mounting Motor Pump - CT0_ = Submerged - CT3_ = External Power Flow a) Flow b) Press.

1) 2) 3) kW/hp Lpm/gpm Lpm/gpm Barg/psi

HPU CT02 1 MOTOR 94/126 240.0/63.4 220.0/58.1 207/3,000HPU CT03 2 MOTOR 188/252 480.0/126.8 440.0/116.2 207/3,000HPU CT05 3 MOTOR 282/378 720.0/190.0 660.0/174.0 207/3,000HPU CT06 4 MOTOR 376/504 960.0/254.0 920.0/243.0 207/3,000HPU CT07 5 MOTOR 470/630 1.200.0/317.0 1,150.0/303.8 207/3,000HPU CT31 1 MOTOR 94/126 240.0/63.4 220.0/58.1 207/3,000HPU CT32 2 MOTOR 188/252 480.0/126.8 440.0/116.2 207/3,000HPU CT33 3 MOTOR 282/378 720.0/190 660.0/174 207/3,000HPU CT34 4 MOTOR 376/504 960.0/254.0 920.0/243.0 207/3,000HPU CT35 5 MOTOR 470/630 1,200.0/317.0 1,150.0/303.8 207/3,000HPU CT36 6 MOTOR 564/756 1,440.0/380.4 1,370.0/361.9 207/3,000HPU CT37 7 MOTOR 658/882 1,680.0/443.8 1,590.0/420.0 207/3,000

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Eagle/Eagle LightAccording to statutory and oil companies’ requirements, moderndrilling rigs are required to operate without manual intervention.Based on Robotic Motion Control (RMC), the Eagle/Eagle Lighthorizontal to vertical (HTV) equipment is fully automated andcan be operated either from a separate control panel, or fromthe driller’s cabin (DC). The system has been designed withsafety as a priority and the Eagle/Eagle Light is regarded as ahighly reliable system.

The Eagle/Eagle Light machines are used for transfer of tubularsfrom a horizontal position at the catwalk, or angled at the piperamp. Tubulars are transferred to a vertical position in the derrickdirectly over the rotary centre line, or into the Mousehole andvice versa.

A slewing function can be implemented on jib/yoke. (Adjust pipein well center/stand building).

The Eagle System is designed for stabbing casing & tubing andfor building stands while drilling, and can assist in handling vari-ous tools.

EagleTechnical dataClearance between vertical guide rails Typical 3m (10 ft)Tubular length Max. 14.5m (47.5 ft)Tubular diameter 2 7/8" - 20" (30")Lifting capacity with gripper head 3500kg (7770lb)Typical outreach 11 m (36 ft)Lifting capacity without gripper head 5000kg (11100lb)Hydraulic power consumption 205 bar, 600 l/min.

(3000 psi/160 gl/min)

Eagle LightTechnical dataClearance between vertical guide rails Typical 3m (10 ft)Tubular length Max. 14.5m (47.5 ft)Tubular diameter 2 7/8" - 20" (30")Lifting capacity with gripper head Max. 4500kg (9920lb)Capacity 35 joints per hourHydraulic power consumption 205 bar, 300 l/min.

(3000 psi/80 gl/min)

Eagle Grip HeadsThe Eagle light grip yoke is capable of handling tubulars of allsizes from 2 7/8" - 30". The yoke has various configurations:

Grip Heads Guide HeadsSize 1: 2 7/8 in. - 9 5/8 in. Size 1: 2 7/8 in. - 20 in.Size 2: 10 3/4 in. - 20 in. Size 2: 20 in. - 30 in.Size 3: 22 in. - 30 in.

The tubular size is adjusted manually in accordance with a tableat the “back up die” before any operation may start. The tubularcentre will be at the same place each time, which is vital inorder to reach stick-up within the tolerances.The grip heads are equipped with dies at the two moveable griparms and at the back up die, to maintain proper grip.

Eagle on Gullfaks picking up pipe from pipe deck

Eagle Light presenting pipe to well center

Eagle Light gripper yoke with soft stab function

Pipe Handling Equipment



Riser Handling Crane

Riser Handling CraneThe Riser Handling Crane is designed for vertical handling ofrisers from the Riser Fingerboards to the Riser Chute machinewhere risers are conveyed to the Drill Floor. In addition, the RHCwill be used to handle and rack the slip joint.The RHC is powered from a Rig Main Power Unit with hydraulicworking pressure of 210 bar (3000 psi). Hydraulic and electricpower are supplied by a drag chain, allowing the crane to travelon rails port/stb. along the fingerboards.A specially designed Service Basket, used for inspection of ris-ers is included and is to be connected to the lifting telescopewhen gripper head is not in use.

Technical dataLifting capacity (SWL) 35 mT (38.6 tons)Gantry speed 0.25 m/sec (9.84 in/sec)Trolly speed 0.25 m/sec (9.84 in/sec)Hoisting speed 0.15 m/sec (6 in/sec)Max lifting height 17.5 m (57.4 ft)Total weight 132 mT (145.5 tons)

Gantry CraneThe prime function of the Gantry Crane is to move drilling tubularsfrom their storage area to the catwalk machine and vice versa.The Gantry Crane is a self-contained unit with Operator’s Cabin,Hydraulic Power Unit, power distribution and Control System,all located on the crane. The crane is equipped with:• 2 riser forks for handling riser, pup joints and casing• 2 magnet yokes for handling drill pipes and other tubulars

Technical dataLifting capacity (SWL) 2 x 23 mT (2 x 25 tons)Gantry speed 0.4 m/sec (16.9 in./sec)Trolley speed 0.25 m/sec (9.84 in./sec)Hoisting speed 0.25 m/sec (9.84 in./sec)Max lifting height 11.9 m (39.04 ft.)Electrical power requirements 3 x 480 VAC 60 Hz (3 x 100 kW)Total weight 116 mT (128 tons)

Pipedeck PipehandlerThe Pipedeck Pipehandler is designed for safe handling of drill-ing tubulars from the piperack to the catwalk machine and viceversa. The crane is controlled either from a remote station or amounted cabin. To simplify the operation, the control system iscomputerized.Option: RMC. (See page 39 for further information.)

Pipedeck pipehandler is an excellent alternative on rigs withrestricted area for rails, and where the elevation between pipedeck and tubular feeding machine is relatively high.

Technical dataLifting capacity (SWL)- Claws from 2 7/8” to 30” 0.8 - 9.0 mT (0.9 - 10 tons)- Pad eye twist gripper yoke 9.0 mT (10 tons)- Lifting equipment exl. yoke 12.0 mT (13 tons)Maximum load eccentricity (+/- 0.5m) (+/- 1.6 ft)Working radius max. 23.0m - min. 3.5m

(max. 76 ft - min. 15 ft)

Gantry Crane

Pipedeck Pipehandler



Catwalk/Tubular Feeding MachineThe Catwalk Machine/Tubular Feeding Machine (TFM) transferstubulars between piperack crane and V-door/drill floor. It is de-signed for remote controlled mechanical handling of tubularsfrom 2 7/8" to max. 30" outside diameter. Riser and slip jointsare handled by trolleys. The Catwalk Machine can be deliveredwith or without feeding arrangements, tailor-made to suit theactual rig.

Technical dataRange 2 7/8" - 30"Working rateDrillpipe 40-60 joints/hourWorking Pressure 210 bar (3045 psi)Hydraulic flow Depends on speed and operational

requirements.Typical 150-300 l/min(40-80 gallon/min)

Size incl. service platf. Typical 1500x4000x15000[mm](5x13x49 ft)

Weight Varying 20 – 30 mT (22 - 33 tons)

Option: Kit for riser handling.

Piperack Crane

Catwalk Machine delivering drill pipe

Piperack CraneThe Piperack Crane is designed for safe transportation of tubularsfrom the pipe deck to the Catwalk Machine, and vice versa.

The crane is a cantilever type crane, controlled from a cabin orplatform located on the crane trolley. Remote control from thedrill floor is also available.

The piperack crane is delivered with twist gripper as handlingdevice. The control system ensures that the yoke is alwayskept horizontal during a sequence. The twist gripper yoke isdesigned to pick up tubulars out of centre, but the load will al-ways be kept horizontal.

Piperack Crane w/Telescope is mainly used on rigs with smallelevation differences. The telescope increases the hookup flexibility.

Technical dataTravelling speed 30 m/min (98 ft/min)Lifting speed 20 m/min (65 ft/min)Telescopic speed 20 m/min (65 ft/min)Travelling length 41.3 m (135 ft/min)Telescopic length 4.6 m (15 ft/min)Lifting capacity 6.0 mT x 11.4 m (+/- 0.5 m eccentric)

(6.6 tons x 37.4 ft +/- 1.6 ft eccentric)2.5 mT x 16.0 m (+/- 3m eccentric)(2.8 tons x 52 ft +/- 10 ft eccentric)(Distance from center jib)

Tubular length 3.5 - 14.6 m (11.5 - 48 ft)Tubular diameter 2 7/8” - 30”Twist gripper claws 2 7/8” - 30”Installed weight approx. 30 mT (incl. rail, gripper)(33 tons)


Bridge Crane

Bridge Crane Systems (BRC)MH has a comprehensive range of vertical pipe handling equip-ment and can deliver complete systems or individual, tailor mademachines. The BRC systems are available both with and withoutsynchro control system / Robotic Motion Control (RMC).

One-man OperatedRMC is a one-man operated pipe handling system which can beoperated from the Driller’s cabin, or from a separate Operator’scabin.

Increased FlexibilityThe system is based on a standard Bridge Crane and a LowerGuiding Arm. Based on RMC the two handling arms can operatesynchronously or independently, thus increasing flexibility. Fin-gerboard capacity: Up to 550 stands of drill pipe and 14 stands ofdrill collar.

Technical dataTubular range 2 7/8” to 9 3/4”Racking capacity 470 stands within a 40x40ft DerrrickLifting capacity Max. 11,500 kg (25,353 lb)Lifting height Up to 5000 mm (196 in)Hydraulic power cons. 210 bar/180 l/min - 250 l/min (3000psi/48-

66 gallon/min)

FingerboardsThe DP/DC fingerboards with pneumatically operated lockingfingers are designed to safely lock tubulars in the derrick. Thiscan either be pneumatically or electrically remote controlled.The locking fingers are bolted assemblies accessible from thetop with the actuating cylinder protected within the fingerboardstructure.

Each fingerboard is individually fitted according to customerrequirement and available space.

Air Pressure 7 barg (min) – 10 barg (max.)(100 - 145 psi)

Free Air Consumption 35 Nm3/h (intermittent)(1200 ft3/h)Fingerboard shown with adapters for 2 7/8 in.

DP storage ability


Bridge Crane Lower Guide System (VPH)Fingerboard and Bridge Crane Racker Head


Upper Racking Arm (URA)

2 - Arm SystemThe 2-Arm System is a derrick mounted Pipe Handling sys-tem. Racking board capacity of the 2-Arm System is up to 420stands of drill pipes and 14 stands of drill collar. The 2-Armsystem is available both with and without synchro control sys-tem / Robotic Motion Control (RMC).

Upper Racking Arm (URA)The URA is installed in between the Fingerboards. It is tele-scopic and slewable through 180 degrees and mounted on atrolley that travels in and out in track beams.

The URA is designed to handle and guide tubulars up to 9 1/2”o.d. between centre well to racking boards or vice versa.

Intermediate Racking Arm (IRA)The IRA is installed between the set-backs at approx. 30 ft abovethe drill-floor. The IRA is telescopic and slewable through approx.180 degrees, and is mounted on a trolley that travels in or out intrack beams. The IRA is designed to lift and guide drill pipe anddrill collars between centre well and setbacks or vice versa.

The IRA is similar to the URA, however the Rackerhead ismounted on an approximate 5.5m (18ft) long track beam forvertical guiding during lifting of the stands. The upper end of thetrack beam has a guide sheave for the standlift wireline.

Intermediate Racking Arm (IRA)

Technical data for URA/IRAAll values are given for maximum pressure and flow. Speed con-trol is proportional from stand still to maximum.

Telescope URA/IRAStroke 2 x 1.435 m = 2.87 m (9.4 ft)

(tailor made)Push/pull force 25 kN (5620 lbf)Speed – out: 0.45 m/sec. (1.5 ft / sec.)Speed – in: 0.45 m/sec. (1.5 ft / sec.)

Trolley Travel - URA/IRADistance (dep. on Derrick) 2.6 m (8.5 ft)Push/pull force: 25 kN (5620 lbf)Speed: 0.5 m/sec. (1.64 ft./sec.)

Slewing URA/IRA90 deg - 90 deg 180 degreesSlewing moment 40 kNm (29500 lbf. ft) /

80 kNm (59000 lbf. ft)Speed 3.83 rpmMax. sideforce of Rackerhead 10kN (2250 lbf)

at max. outreachLifting (IRA) 6300 kg (13890 lb)

WeightsURA 4700 kg / 10360 lbIRA 5200 kg / 11460 lb


URA and IRA systems


Derrick Pipe Handling

Typical RMC screen picture

Robotic Motion Control (RMC)RMC makes it possible to move huge and complexmachines safely and efficiently using only one hand.RMC moves the machines along paths.

RMC is available for the following pipe handlers:• Vertical Pipe handling (Bridge Crane System and

2-Arm System) - Synchro control system• Eagle / Eagle Light• Pipe Racking Machine• Triplex Crane

AdvantagesRMC features the following advantages:• Easy to use; one hand operated• Efficient and safe movement• Minimal crew training required• Movement in narrow areas is done fast and safely• All cylinders and motors move in an optimal way• Controlled oil consumption• Vertical Pipe handling: The two racking arms and

fingerboard are one-man operated allowing for simul-taneous Roughneck operation.

User interfaceRMC is integrated into the user interface of the controlsystem.

TechnologyRMC utilises mathematics from the world of robot con-trol to calculate the optimal movement of pipe handlingsystems. Cylinders and motors are equipped with ab-solute position sensors and the RMC uses these sen-sors to achieve the correct positioning.

The RMC controlled machines move along calculated 6axis paths. The first three axes (X,Y,Z) define the posi-tion of the load. The last three axes (a,b,l) define theorientation of the load. This gives a great flexibility withrespect to requirements given by the rig layout.

Safety• RMC ensures that no cylinders or motors are moved

in such a manner that load can be dropped:• The path that is calculated takes into account all hin-

drances along the way to the destination• The load is kept as low as possible above deck• Running pattern repeated• Vertical Pipe handling: The two machines are

synchronised, hence safer operation• Eagle / Eagle Light moves outside working area of

travelling assembly/top drive when transportingtubulars to vertical position

• Triplex Crane: The yoke is under full control and iskept horizontal and correctly aligned at all times

RMC contains continuous monitoring of all sensors andof the control system itself. This well-proven systemdetects and reacts to a large number of critical situa-tions:• Sensor failures• Valve failures• Computer failures• Calculation failures• Operator failures

RMC can easily be included in a zone management sys-tem to ensure inter-machine safety.

Typical RMC screen picture



Drill Floor Manipulator Arm (DFMA®)

The DFMA® is designed for guiding/ handling of varioustubular sizes including risers and other items. The DFMA®

can be prepared for mounting underneath the TopdriveGuiderails or pedestal mounted on Drillfloor.

The DFMA® can be prepared for hydraulic/ electrical/ radioremote control panel.

Technical dataTubular range 3 ½" to 60"Push/pull force 30 kN (6700 lb)Max. l/min. working out-reach 10m/2.8m (32ft/9ft)Slewing 360o

Tilt 10o up /45o downHydraulic power consumption 140 bar/160 l/min

(2030psi/42 gallon/min)

One-man Basket

Access Basket

Access BasketThe Access Basket is designed for safe access when perform-ing maintenance and / or working tasks in places that are hardto reach. The basket can easily be installed in the derrick,moonpool area or other areas, either directly with the mountingbracket, or by means of various optional interface kits.

All the basket controls, including emergency stops, can be op-erated from inside the basket and / or Remote Control Stand.

• Casing stabbing boards are also available• Special version can be delivered for BOP maintenance• Rail mounting

Technical dataMax. free working height 17.2m (56.4 ft)Max. permitted load 300 kg (660 lb)Hydraulic power consumption 207 bar, 50 l/min

(3000 psi/ 13 gal./min)

Tilting, up/down +- 60 degreesRotating +- 90 degreesMax. weight 4000 kg (8800 lb)

Telescoping 3400 mm (11.2 ft)4600 mm (15.1 ft)5600 mm (18.4 ft)

The Access basket can be supplied with one or two-man basket.

DFMA Controls

Drillfloor Manipulator Arm


VPH-mode; extended

HTV-mode; hoisting

Pipe Racking MachineThe Pipe Racking Machine is designed for safe handling oftubulars in singles and as 60´ & 90´stands. The machine oper-ates between the setback, well centre and the catwalk machine.The machine consists of one guiding arm and one lifting armwhich are connected to a single closed column.

The arms can be operated in a synchronous or independentmode (RMC). The column is attached to a lower and an uppercarriage for rail travel and slewing up to 270 degrees.

The large hoisting range for the lifting arm and a specially de-signed gripping head with integrated stabbing function gives thePipe Racking Machine a fully integrated HTV-function. The uniquegripper head arrangement has three rotational axes and pick uppipes from arbitrary angles.

The Pipe Racking Machine can change from HTV-mode to VPH-mode without manual interruption. The machine can build standsoffline while drilling, and handle miscellaneous equipment withinthe drill-floor area.

Because of the simple geometry of the arms, the machine iscontrolled by one operator, either manually or automated througha control system. The machine is suitable for XY- and parallelracking configuration.

Technical dataTubular range 2 7/8” to 20”Racking capacity 4.6 m (15 ft) x 2Lifting capacity 11.0 mT (12 tons)Hoist stroke 20.0 m (65 ft)Installed weight 35.0 mT (incl. rails) (38.5 tons)Overall height 32.0 m (104 ft)Slewing sector 270°Slewing speed 5 rpmTime for 90° 4 sec.Travel speed 0.5 m/s (1.6 ft/sec)

VPH-mode;retracted

Pipe Racking Crane close up



Derrickman’s Cabin


Derrickman’s Cabin

Assistant Driller’s Cabin

CabinsMH supplies quality Cabins for various drilling and pipe handlingoperations.

These are:• Derrickmans Cabin• Assistant Drillers Cabin

Both Cabins are designed and built as optimal, safe and com-fortable workplaces to suit various operations. They are self-supported steel structures with suitable lifting arrangements.

The operator is situated in an ergonomic chair with unobstructedview to all necessary equipment and operations.

All main windows have efficient wiper and washer facilities. Thewindows are made of tinted, laminated safety glass for optimalview and safety.

The Cabin interior is heated and ventilated with an efficient de-frost / demist function on the windows.

Both Cabins are designed to meet the most stringent noise levelrequirements.

MH can deliver Cabins for location in both safe and hazardousareas.

Derrickmans CabinThe Derrickmans Cabin is, during normal operation, the mainoperation control position for the Upper Racking Arm or BridgeCrane and the fingerboards.

Assistant Drillers CabinThe Assistant Drillers Cabin is normally used as the secondaryoperating position for the pipe handling in the upper part of theDerrick. It can also be used for operation of singular machinerysuch as a Multi Manipulator Arm or equal.


Compensators and Tensioners

PistonTrack

Technical data Type: 270 - 20 Type: 270 - 25 Type: 454 - 25

Max. compensating 270 Tonnes (595 kips) 270 Tonnes (595 kips) 450 Tonnes (992 kips)Static load 590 Tonnes (1300 kips) 590 Tonnes (1300 kips) 725 Tonnes (1597 kips)Stroke 6.1 m/20 feet 7.62 m/25 feet 7.62 m/25 feetGas volume required 7 x 1,000 l (265 gal) 8 x 1,000 l (265 gal) 8 x 1,500 l (396 gal)Design pressure 210 bar/3000psi 210 bar/3000psi 210 bar/3000psi

Passive deadline and inline compensators are also available.

PistonTrack (Floating PistonPositioning System)Sensing the accumulator piston position will increasesafety significantly in virtually all kinds of compensatorsystems, enabling warning signals to prevent fatal failure.

MH has developed a patented stand alone sensor sys-tem based on alternating magnetic fields technology todetect piston position.

• Standard sensor applicable for all kinds of accumula-tors

• Easy to mount, strap on• Minimum rig downtime• Modularised concept

Sensors will normally be supplied in sensor bars of 100cm length, each with 3 sensor units. One 12mm cableper sensor bar is connected to the Eex-d junction boxfor interfacing to stardard industrial display units.

The mounting is strapped on the outside of the accumu-lator, using either a steel band or a fibre band, finalisingthe mounting by sealing the sensor off using silicone atthe perimeter of the sensor. The Central Processing Unitcan be interfaced to most industrial standard interfaces.

1 central processing unit covers up to 24 sensors in arack, making it possible to get semi-continuous mea-surement when desired.

Technical dataLength x Width x Height (Oper.) 1000x67x37mmWeight (Dry) approx. 5.0 kg (11.0 lb)Weight (Oper.) 5.0 kg (11.0 lb)Sensor response 6 HzEx-rating Eex-dMax. wall thickness accu. 60mm (2.36 in)IP-grade 68Max. distance to sensor CPU 15m (50 ft)Ex-rating CPU Safe Area

Top Mounted Drill String Compensa-torsDue to its special design, the MH Top Mounted Compensatoraddresses hook load variations directly to the crown block.The Drill String Compensator’s unique angle approach keeps thevertical force virtually constant, thereby decreasing weight-on-bitfluctuations to a minimum.

System• Single Unit Top Structure• Two Compensator Units (including cylinder, accumulator and

control valve block)• Dual Rocker-Arm system• Crown Block• Air Pressure Vessels• HPU• Control systemPre assembled MH DSC module


Active Heave Compensator(Top Mounted)MH’s Active Heave Compensator is designed for installation onsemi-submersibles and drillships with top (crown block) mountedDrill String Compensator. The Active Heave Cylinder ismechanically connected to the crown block ensuring minimumload and relative motion variations. It is mainly used when landingBOP’s, X-mas trees, during under-reaming and during otherdownhole operations requiring a minimum of motion.

The Active Heave Compensator system enables the passivesystem to handle subsea equipment in an extended weatherwindow. Drilling and wire line mode is also available.

Technical dataCompensation stroke 7.62 m (25 ft)Max. dynamic force +/- 24 Tonnes (53 kips)Max. heave velocity 1.0 m/s ( 3.3 ft/sec)Design pressure 320 bar (4640 psi)

Typical performance log:Rig heave and residual compensator motionlogged on the Polar Pioneer drilling rig dur-ing under-reaming operations.

Active Heave Compensator(In-Line)MH’s In-Line Active Heave Compensator system is based oninstalling an active compensator cylinder unit in the passive in-line compensator system. The In-Line Active Heave Compensa-tor unit comprises a combined cylinder and accumulator whereasthe active cylinder interacts directly with the piston in the accu-mulator, thus minimising the load variations.

A motion reference unit (MRU) and a compensator positionsensor provide input signals to the control system of the activecylinder’s control valve block. Drilling & wire line mode is alsoavailable.

Technical data• Max. compensating load 226-360 Tonnes (500-800 kips)• Compensating stroke 5.4-7.62 m (18-25ft)• Maximum dynamic force 23.5 Tonnes (52 kips)• Design pressure 320 barg (4640 psi)• Rig heave of +/- 5 m (16.4 ft) @ 12 sec. period (1 m/s (3,3

ft/s) heave velocity)

Top Mounted Active Heave Compensator



Push Pull Tensioning (PPT)The innovative PPT system features a fully flexible tensioningsystem which consists of separate pushing cylinder systemand pulling cylinder system. This configuration results in a verycompact cylinder based tensioning system, reducing cylinderexposure to the splash zone.The system typically consists of a main frame suspended by 8off main deck mounted pushing (plunger) cylinders and 6 offpulling cylinders supported to the same frame structure providingtensioning force to the tension ring. As an option, the main framecan be made skiddable on moonpool beams for offline or dualderrick operation.

The PPT system provides the following benefits• Reduced total length of assembly, critical items are not

subjected to severe environment• All vertical load arrested in cellar/main deck structure, hence

lower COG• “Short” stroke cylinders; easy material handling and rigging• Two fully redundant systems• Flexible design with regards to operation and layout• Stroke divided into separate cylinder systems. Clean lift-off

function by the push cylinders, anti-recoil system included inthe pull cylinders

Marine Riser TensionersMH’s Riser Tensioners utilitise the hydro pneumatic principle usingplunger cylinder with dynamic seal elements at the cylinder glandand on the accumulator piston.

The cylinder is single acting ram type and features a sling-shotvalve. Anti Recoil System and Powered Deadman Drum can beprovided.

The Riser Tensioners can be arranged as single or dual units.

Capacities45 Tonnes (100 kips)54 Tonnes (120 kips)73 Tonnes (160 kips)91 Tonnes (200 kips)113 Tonnes (250 kips)Line travel 15.2 m (50 ft)Line travel 18.3 m (60 ft)Line travel 19.8 m (65 ft)

Guideline and Podline Tensioners7.3 Tonnes (16 kips)11.3 Tonnes (25 kips)Line travel 12.2 m (40 ft)Line travel 15.2 m (50 ft)

Other special configurations for Conductorand Production Riser Tensioners are also available.

160,000 lb Riser Tensioners units onboardDeepwater Pathfinder

Push Pull Tensioner System



Wire Loop Riser Tensioner (WRT)The WRT concept provides a new dimension to the wire rope /jigger winch based tensioning systems. The WRT system isdesigned to allow skidding of the marine riser to parked posi-tion, or between two well centres, while still being connected tothe seabed/BOP.

The dual tensioners represent one pair of tensioners (two offcylinders) maintaining tension in one common wire line with bothends being supported to the riser support ring applying tensioningforce to the marine riser pipe (OB of slip joint).

The system features compact design, thus releasing large areasaround and under drill floor.

Benefits• Based on proven tensioning technology• No geometrical tension loss• No side pull• No dead length• No exposed cylinders• Modular design• No bulky equipment in moonpool area• Easy handling and installation• Compact tensioner location• Narrow wire rope/skidding path• Effortless skidding/jacking• Few wire rope lengths• No deadman drum/anchor• Flexible redundancy

The WRT consists of the following sub-systems• Dual Riser Tensioner Units (typically 4 off)• Skid frame incl. idler sheaves• Support ring• Fixed sheave cluster• APVs• Wire Ropes (fixed lengths)• Control system


WRT

WRT system

MH’s Compensation Department in Horten, Norway

MH Horten Compensation Dept.The department represents a world class compensation equip-ment supplier.

The primary assets are• World class compensation technology know-how• Employees recognised as leading compensation experts• Broad client network• Attractive workshop (e.g. high power availability, multifunc-

tion test tower, HPU, crane capacity 100T)

Compensating equipment manufacturing site• Workshop area 3000 m2

• Height under roof 22m• Height under hook 16m• Hook capacity 2 x 55t


BOP Handling Equipment

Tailor-Made SystemsAll MH’s BOP Handling Systems are designed to suit thecustomer’s requirements / rig limitations, are tailor made to anyspecification and are built from one or more standard products:

• BOP Transporters / Trolleys• X-mas Tree Transporters / Trolleys• Overhead Cranes• Baseplate Trolleys• Skidding Systems• Over / Underhull Guiding Systems

Upon receipt of information MH can give a system proposal, andsuggest additions that can be made to give the most efficienthandling system.

Systems can be delivered with capacities up to 400 mT (440tons)

The prime function of the BOP/X-mas Tree Handling Systems isto safely transport/lift/guide the equipment from the parked/ stor-age position to the well centre, or vice versa.

BOP Transporter/ Two-Stack systemThe BOP “Forklift” Transporter shown can be used for a “twostack system” with the main frame design allowing a skiddingsystem to be adopted for placing the BOP stack(s) alongsidethe transporter on the cellar deck storage area.Capacities for the equipment range from 170mT to 400 mT (187- 440 tons) with lifting heights from 3.0 m to 10.0 m (10 - 33 ft).

BOP Trolley for one/two stack systemThe BOP Trolley shown allows the stack to be transported fromthe parked position to the well centre along the moonpool orvice versa and is generally used together with an overhead craneof the same capacity as the trolley to allow the stack to be liftedto the storage position.

Overhead Cranes/Gantry CranesThe Overhead Cranes/Gantry Cranes are designed to suit thecustomer’s requirements. Both hydraulic and electro hydrauliccranes are available. The latter option includes an on-board powerunit. Most units can be designed with transverse travel, althoughthis may be limited by rail span and height. The controls are usu-ally cabin mounted or pendant.

See page 40 for information on Access Baskets.

MH delivers simple Gantry Craneswith capacities ranging from 5.5 mT(6.1 tons) to full size overhead craneswith capacities up to 250 mT (275tons).


BOP CarrierThe BOP Carrier is installed on each side of the moon pool andthe BOP is located on foldable hang of arms in between the twounits.The folded BOP Carrier is able to pass a BOP in the wellcentre.The two independent units are driven by rack & pinionalong the moon pool, and lifting is performed by hydraulic cylin-ders.

Both travel and lifting functions are controlled by a PLC program.The BOP Carrier is equipped with a wireless remote control.This BOP Carrier is very light and requires less space in themoon pool area than other solutions.

Technical dataCapacity 150 mT (165 tons) SWLLength 2400 mm (7.9 ft)Height 8000 mm (26 ft)Width 3000 mm (10 ft)Weight 40 mT (44 tons)Travel speed 1 m/min (3.3 ft/min)Lifting speed 1 m/min (3.3 ft/min)

BOP TransporterTechnical dataCapacity 400 mT (440 tons) SWLLifting height up to 9m (30 ft)

Includes sliding retractable test stump arrangement.Mechanical safety locking system.

BOP Carrier Assembly

BOP Transporter

BOP Guide SystemsThe Guide Systems provide guidance and horizontal restraint forthe BOP when being lifted by the drawworks. Guide systemscan be adapted to either Transporter or Overhead Crane Sys-tems, and mounted on deck, under deck, or connected to thetransporter. The systems can be fixed, hinged, or sliding. Bothconventional tube spear type systems and rubber buffer rollertype systems are available.

Base Plate TrolleysThe Base Plate Trolleys are designed as auxiliaries to mostsystems, and their main function is to handle temporary andpermanent guide bases. The Trolleys are strong enough to supportthe LMRP. Their unique design allows the unit to enter withinthe guide lines, making trolleys ideal as a service platform at thedrill string centre.

The Trolleys can be adapted for handling BOP’s and X-mas treeswith capacities ranging from 30 mT to 300 mT (33 - 330 tons).

BOP Guide System

Base Plate Trolleys

BOP Handling Equipment


Drawworks

Electrical Drawworks


Electrical DrawworksMH offers state of the art, high quality electrical drawworks inco-operation with Wirth. For more than 50 years chain drivendrawworks were the norm in the industry. They have now beensuperseded by improved models featuring the following advan-tages:

• Four quadrat drive mode• Higher safety• Higher life-time and endurance• Higer speeds by use of a frequency-controlled AC-motor• Integrated autodriller• Compact design with a width of only 2.5-3.0 m (8.2-9.8 ft)• Drive options: DC, AC, hydraulics• Full material traceability is standard

Gear Driven Drawworks feature the following benefits• High performance• High availability• Lower weight• Less noice and vibration

The main features of the standard feed off control system,26kW• AC frequency controlled drive

Optional feed off control system 45 kW/emergencyhoisting• max. lowering or hoisting speed up to 75 m/h• max. hook load up to 520 t

Benefits of the feed off control system• Reduces wear of bit• Achieves optimum rate of penetration• Maximises drilling efficiency• Smooth block control for safety• Minimising downtime for semi sub operation• Redundancy for the SRC-DRIVE• Automatic drilling operation



Triplex Mud Pumps - high power forhigh performanceMain features• Optimal smoothness of operation• Pump drive units for permanent-load operation, with a high

degree of stability• Power-end frame of fabricated steel• Fluid ends in stainless steel (optional) for increased lifetime• Gear wheels and drive shaft of wear-resistant heat treated

steel• A double helical toothing ensures a high smoothness of op-

eration and prevents the axial load from being exerted ontothe pinion shaft and crank-shaft outer bearings

• Crank-shaft of heat-treated cast steel with a high degree ofrigidity

• Material combination between crosshead and slide ways inaccordance with the most recent state of technology

• Pressure circulation lubrication system for all moving parts• High lifetime wearparts• Surveillance and control elements for early recognition of

failures• Drive options: AC, DC• Full material traceability as standard

Drawworks/Mud Pumps

Multi speed

Drawworks GH 1250 EG GH 1500 EG GH 2000 EG GH 2000 EG GH 2500 EG GH 2500 EG GH 2500 EGw/ 4-Q Drive DC-LV AC-SV AC-LV AC-SV DC-LV DC-SV AC-SV

length mm/in 8200/323 ~ 7200/283 9500/374 7800/307 9100/358 7800/307 7800/307width mm/in 2500/98 ~ 3500/138 3000/118 3500/138 2500/98 3500/138 3500/138height mm/in 2400/94 ~ 2350/93 2450/96 2400/94 2400/94 2400/94 2400/94

Weight t / 35 ~38 55/57 55/57 50 55/57 55/57lb x 1000 77 ~83 121/126 121/126 110 121/126 121/126

Multi speed

Drawworks GH 3000 EG GH 3000 EG GH 3800 EG GH 4500 EG GH 4500 EG GH 5000 EG GH 6000 EGw/ 4-Q Drive AC-LV AC-SV DC-SV AC-LV AC-SV DC-SV AC-SV

length mm/in 9500/374 7800/307 ~ 8900/350 11300/445 ~ 8900/350 ~ 8900/351 ~ 9400/370width mm/in 3000/118 3500/138 ~ 4600/181 3200/126 ~ 4800/189 ~ 4600/181 ~ 4800/181height mm/in 2450/96 2400/94 ~ 3000/118 4600/181 ~ 3000/118 ~ 3000/118 ~ 3200/126

Weight t / 57 57 ~87 87 ~87 ~95 ~100lb x 1001 126 126 ~192 192 ~192 ~209 ~220

Single speed

Drawworks CG 1200 EG GH 2400 EG GH 4800 EGw/ 4-Q Drive AC-1G AC-1G AC-1G

length mm/in 5350/211 5650/222 ~ 9000/354width mm/in 3300/130 3300/130 ~ 3300/130height mm/in 2750/108 2750/108 ~ 2750/108

Weight t / ~27 ~31 ~56

lb x 1000 ~59 ~68 ~123


Mud Pumps

Triplex Mud Pump TPK 7 1/2“ x 14“/2200• AC driven, single top mounted• AC motor with double extended shaft to achive 85 dBa• less noise• less maintenance• less expensive

Triplex mud pumps feature hydraulic auxiliary toolsA speciality of the mud pumps are the hydraulic auxiliary toolswhich have been designed by Wirth for easy handling and quickerexchange of wear parts. Tecnical patents from 1967 cover theseadvantages.

Since 1959 the valve seats of the Wirth mud pumps have bepressed out hydraulically. For that purpose, hydraulic oil ispressed in between housing and valve seat by means of a manualpump. O-rings provided at the upper and the lower end of theconical seat ensure absolute tightness of the seat surfaces.High end line & classic line available.

SummaryDrawworks and mud pumps are available in two different ver-sions. First of all the ‘High End Line’ designed for Offshore appli-cation to suit special customers requirements and specifica-tions.

The second is the ‘ClassicLine’ designed for Onshore applica-tion to suit the requirements existing on typical Land drilling rigsat lower costs but providing the same quality standard as the‘High end Line’


OverviewA key element on a modern drilling rig is the controlsystem. MH is one of the largest suppliers of state of theart Drilling Control and Monitoring System (DCMS). Thebuilding blocks and main features of these systems are:

• Local equipment controls / PLCs• DrillView, Data acquisition, presentation and control sys-

tem• CADS; Configurable Automatic Drilling System• Necessary computer hardware• Drilling Control Rooms (DCRs)

All MH delivered equipment and third party equipment;i.e. Drawworks, Mud pumps, Cementing unit, Mud log-ger, Mud control, BOP etc. can be integrated into theDCMS and be monitored and/or controlled from the DCR.

The MH DCMS is designed and manufactured accordingto industry standards and the highest standards relatedto HSE and Human-Machine Interface. The DrillView sys-tem can accommodate any level of automation;

• Remote control of equipment/systems• Synchronization of various equipment• Fully automatic mode• Fully automatic mode with synchronized CCTV opera-

tion and predefined drilling operation sequences (CADS)

Drilling Control & Monitoring Systems

Configurable Automatic Drilling System(CADS)The CADS system was developed to create a user-friendly and superior control system with respect to effi-ciency and safety. The result is a highly flexible anduser configurable system, accessible for the drillingcontractor’s personnel for on site adoptions.The system includes predefined drilling operator se-quences, thereby standardising operations and improv-ing safety.Safe operation is an integral part of the system withSZMS ( Smart Zone Managment System). Necessaryset-points, interlocks, anti-collision, fully automatedCCTV controls and other safety features are built intothe software.The DrillView/CADS system is based on touch screensand a state-of-the-art computer system.

Extended TestingIn order to reduce testing time on site, and ensure timelydelivery, MH integrates equipment tests with tests onthe DCMS and operator’s chair.Prior to testing on site, the Drilling Control Monitoring Sys-tem (DrillView) and operator’s chair are tested in the labo-ratory by means of simulation.During this extensive testing, MH may give practical equip-ment training of the customer’s operators and service per-sonnel.

DrillView Overview


DrillView

Typical system detail picture; shown here is the HTVmode picture.

Get your rig connectedThe MH DrillView system provides a user friendly interface foracquisition, logging, storage, distribution and display of drillingdata, as well as set-up and remote control of drilling equipment.DrillView integrates your drilling systems into one common controland monitoring centre. Real time drilling data can be sharedbetween the driller, rig offices, shorebase or other locationsaccessible by telecommunications.

Integration in practiceBased on drilling operational experience, the system offers acompletely integrated platform designed for the entire drilling rig.User friendly screen arrangements cover all normal drilling opera-tions, such as drilling, tripping, mud system storage, mudloggerinterface and circulation, kicks, string and hole data, make-up torquelogs and others. The user can monitor the status of the individualdrilling equipment via "equipment status screens" that then formthe basis for efficient trouble shooting, or planning of maintenance.Information is easily accessible due to the system’s versatilityand flexibility.

The user can easily set up trend charts from a large selection ofdirect and computed variables. All data stored from previous wellscan be replayed for analysis, and all drilling data is available for off linereports using standard office tools like Microsoft Access or Excel.The drilling data is stored in an SQL real time database.A central alarm system provides the rig with distributed statusinformation.

Industry standard basisThe DrillView system is based on a number of industrial-typeworkstations running Windows 2000 in a client/server environment.Field level interface (sensors, actuators, and other automationsystems) is by Programmable Logic Controllers (PLCs), normallyin a Profibus type network.

Web server integratedThe DrillView system has a built in Web server, which meansthat all data can be made available on the LAN / WAN / Internetas read only or full control instantly.

Interface your drilling equipmentDrillView contains all the mechanisms required to interface withdrilling equipment for control purposes. Typical examples are controlof pumps and valves on mud system schematics, control ofhydraulic power units, control and priority setting of starters,assignment of SCRs and others.

Remote diagnosticsThe DCMS offshore can be linked via the Internet to MH’s remotediagnostics center in Kristiansand. Thus, trouble-shooting can becarried out in co-operation with customer service personnel with-out requiring MH personnel to travel offshore. If necessary, MHpersonnel will carry out software modifications according to setprocedures.

DrillView with integrated CCTV.

Typical picture for integration of the mud mix system


On-shore work stationTo enable active operator support, a fully integrated workstationwith integrated CCTV may be established in an onshore opera-tion center.

Intelligent Operator ChairNew user-friendly features include:• A ”sit down/stand up” function for optimum ergonomics. The

chair may be adjusted both horizontally and vertically to suitindividual needs.

• Full multi-user selection; select between operation modes suchas drilling, pipe handling etc., or single equipment such asDDM, RT, DW, and HRN. This can of course be selected on allinstalled chairs. Choose between driller, assistant driller, pipehandling mode etc.

• Great flexibility; Add functionality by means of softwareupgrades and adjustments as opposed to hardwiring andhardware upgrades.

• Efficient installation and commissioning due to comprehensiveFAT-testing. Reduced hardwiring and extensive use of touchscreen technology.

Using only the best sourcesThe DrillView system can be delivered with a sensor packagecontaining all required measurements with state of the artaccuracy, reliability and response time. The extremely fast updateon the DrillView clients has made it possible to replaceconventional instrumentation in DCRs, with computers. The typi-cal response time for critical data is 200ms.

E-tallyThe electronic tally book system keeps track of all items passingtrough the V-door and it does not require any tagging of the pipe.The system uses the length measuring capabilities of the tubularfeeding machine. The operator must give input regarding thepipe type. From this information the system calculates all infor-mation needed to replace the conventional tally book. In addi-tion the E-tally system keeps track of the pipe’s location insidethe fingerboard or its position in the drill string. The system isalso capable of tracing casing.

And scaleable too...DrillView is designed to suit all levels of complexity, from systemswith small sensor package and one workstation, to large drilling controlsystems with multiple sensors, control systems, communication links,workstations and users.

Decision support, trend monitoring, advanced alarms, interfaces,drilling data management, drilling equipment control, data distri-bution, easy to use and good graphics are keywords for a gooddrilling data system. DrillView covers these requirements, and more.The DrillView system is drilling instrumentation for the next gen-eration, available today.

The DrillView System can be delivered to rigs independent ofadditional MH Drilling Equipment, and it is designed to facilitateinterface between various types of equipment.

Operator’s Chair with touch screen and joysticks

DCR for Valhall W IP

Operator Chair - touch panel and joystick

DrillView


Drilling Control Rooms

Drilling Control RoomEach Drilling Control Room (DCR) is designed to give an opti-mal solution for the individual drill floor. The DCR can be de-signed for 1, 2 or even 3 operators, depending on your require-ments.

The exteriorThe DCR is a self supporting, welded steel constructionmounted on vibration dampers. All windows are sun-filteredand contain laminated safety glass with protection grating abovethe top windows. A specially developed, mud-resistant washer/wiper system is used to enable efficient window cleaning.

The interiorThe interior is designed to the highest standards with regard toview, noise reduction, air quality, light, reflections and colours.The DCR can be delivered fully Ex or safe by ventilation. Thedata floor has space for cabling and HVAC ducting.

Built to lastBuilt to the highest standards of workmanship, the Drilling Con-trol Room is the right choice for rigs that are competing for theadvanced drilling operations of the future.

Interface cablingWhen using MH’s DCR together with the MH Ex Intelligent Op-erator Chair and MH DrillView system, a minimum of interfacecabling is required. Extensive use of fibre cabling makes con-nection in zone easy and inexpensive.

Equipment roomAn equipment room adjacent to the DCR can be delivered. Thisis particularily useful in safe by ventilation installations.


Workshop/Assembly TestingFacilitiesThe MH workshop assembles and tests all types of MH prod-ucts.

Representing top competence in several areas, the workshoplabour force consists of automation personnel, automation me-chanics, industrial mechanics and electricians.

This comprehensive competence enables the workshop to per-form relevant tasks in other MH departments, such as follow-upcommissioning, installation and service. Moreover, this helpsthe workshop personnel become more flexible, while at the sametime increasing the overall competence level of the workshop.

Excellent testing facilitiesThe workshop has very suitable testing facilities for the equip-ment produced. There are two testing towers for testing of rotat-ing equipment. Underneath the testing towers there is a rotarytable used to obtain torque on the machines while testing. Theworkshop also has a full test frame for Roughnecks of all kinds.This also contains pipe, which enables the workshop to runtorque. The workshop can perform pressure testing using air, oiland glycol.

A large girder has been cast into the floor of the hall that is usedfor welding test foundations. This girder can draw 30 metric tonnes(33.1 short tons).

Additionally, the workshop has flushing units allowing flushingof pipes and hoses up to 1800 l/min (475.5 gallons per minute).The workshop has HPUs in order that all MH equipment can berun.

Outside testingOutside the workshop there is a large testing plate with a foun-dation where Eagles and other types of heavy pipe handlingequipment can be tested. This testing plate is capable of han-dling 2000 litres (528.3 gallons) of oil, which is sent directly toan oil separator, thus avoiding contamination of the environment.

The workshop also contains spray painting halls for painting, awelding shop, a hose pressing room/pipe shop, a calibrationroom, a tool shack, a hydraulic bench for courses, an electricalworkshop room for courses and a washing hall. Additionally, theworkshop has two bridge cranes with a total lifting capacity of45 metric tonnes (49.6 short tons) - 1 x 15 metric tonnes (16.5short tons) and 1 x 30 metric tonnes (33.1 short tons).

The total base of the workshop is approximately 1600 squaremetres (1913.6 square yards), whereas the outside testing platehas a base of approximately 800 square metres (956.8 squareyards).

The MH assembly testing facilities

Verification

Workshop/Assembly Testing Facilities

TorqueMaster


Global OperationsMH’s Operations Division is responsible for the follow-up of allMH equipment and rigs in operation. The overall objective isconstant focus on optimising drilling operations, maximising up-time and reducing life cycle costs while adhering to a zero inci-dent safety policy.

High Quality Personnel & Spare PartsMH has in excess of 100 highly experienced service engineersthat have in depth knowledge of MH’s equipment and full ac-cess to our global Spare Parts Network.

An inter-company exchange policy enables MH to provide allcustomers with the same outstanding non-stop service world-wide throughout the entire life cycle of the product.

Customer Service CenterMH’s Customer Service Center co-ordinates service tasks forwell-trained technical personnel from various categories, basedon customer requirements;

24 Hour Customer SupportThe MH Customer Service Centre provides customer service 24hours a day, including Spare Parts Support and Technical Ser-vices.

Technical Customer Expeditors serve as rig specific single pointof contacts and have multidiscipline operational experience.

A group of highly skilled Senior Service Engineers supervisecomplex service missions and handle modifications/upgradeprojects. MH’s Service Engineers perform various service mis-sions on rigs.

The MH Technical Training Center provides operator assistanceoffshore, operator courses, system trouble-shooting and main-tenance courses on all MH equipment using up to date instruc-tion methods and technology.

The MH remote diagnostics concept enables our most experi-enced engineers to access and troubleshoot PLC equipmentonboard our customers’ rigs via a remote link from our headoffice 24 hours a day.

Service concepts• Technical Customer Expeditors (Rig specific single point of

contact)• Offshore/on site Service Missions• Remote Diagnostics• Safety Inspections• Component Exchange Programme• Training• Condition based maintenance

The MH anywhere portable camera system enables usto transfer live video and audio signals between anyremote location or rig and MH head office. At the MHOperation Center we can communicate with the cameraoperator for guidance and trouble shooting purposes.

The office facilites where the MH onshore OperationCenter provides Remote Diagnostics

MH Customer Service Center

Global Operations


MH overhaul

Spare PartsMH’s network of international offices provides an efficient sys-tem for spare parts supplies world-wide, thus assuring com-plete customer support 24 hours a day. Strategically locatedwarehouse facilities are continuously expanded and MH doesits utmost to organise efficient and timely spare parts availabil-ity. The MH Spare Parts staff consists of experienced person-nel possessing detailed knowledge of MH equipment.

Typical Spare Parts Services• Spare Parts Sales/Expedition• Spare Parts Planning• Spare Parts Stock Management

Overhaul, Installation andCommissioningMH supervisors are highly skilled in managing overhaul, instal-lation and commissioning projects offshore and onshore in co-operation with MH partner workshops world-wide. During over-haul projects the equipment is reconditioned to original toler-ances and delivered with a 6 month OEM warranty.

Services• Overhaul• Modifications and upgrades• Installation• Mechanical completion• Exchange components• Commissioning

After Sales Offices• Norway (Kristiansand and Stavanger)• Azerbaijan (Baku)• UK (Aberdeen)• Iran (Teheran)• USA (Houston)• Brazil (Macae)• Singapore• India (Mombay)

Additionally, local presence is obtained through various inter-national Aker Kværner offices.

After HoursCustomer support is available 24 hours a day. For further de-tails please contact:

Technical services +47 91 19 15 30Spare parts support +47 95 83 21 46Customer Service Center +47 38 05 79 11

Spare parts handling

Workshop overview

Global Operations


Upgrade KitsBased on customer feedback, MH has made improvements onparts of the drilling equipment and systems. So far, this hasresulted in 69 Upgrade Kits.

The idea is that improvements on the equipment and systemswill be more available and visible in the market by means ofproductifying, standardising and/or modularising Upgrade Kitsand present them in an easy understandable way.

Key advantages

• Increase equipment and system reliability• Increase equipment and system efficiency• Increase safety / HSE• Reduce operation expenditures (OPEX)

Upgrade Kits help ease customer planning andbudget review

• Fixed prices and delivery times• Minimise shut down time• Standardised and well proven upgrade solutions

This results in reduced or no down time during installation, andimproves spare parts availability.

Upgrade Kits for Drilling Equipment & Systems

HT Spinner

Useful add-on functions

Improved monitoring and control systemsInstrumentation improvements


Woodfield Systems LtdWoodfield Systems started trading in 1922, and has been de-signing and manufacturing Marine Loading Arms since 1954and can demonstrate a continuous record of design, manufac-ture and service over this period. We became a wholly ownedsubsidiary of Maritime Hydraulics in 1998.

Woodfield Systems have been operating from the same site forthe past 40 years. We have enjoyed the benefit of an experi-enced and skilled workforce that offers a level of expertise unri-valled in this industry.

Temperatures from -1640C to +2000CThe Woodfield range of Marine Loading Arms extend from 4”dia. up to 24” dia., for handling crude oil, refined products, slur-ries, chemicals, LPG, LNG and other cryogenic products. Theequipment can cover operating temperatures from -1640C to+2000C.

Arms can be supplied as manual, hydraulic, electro-hydraulicwith either hardwired or wireless remote control. Manually oper-ated arms can be supplied with attachment brackets for thelater addition of hydraulic operations. Operational limiting con-trols and other warning devices are available as optional extras.Woodfield Arms, although normally fixed in one jetty position,can be mounted on movable trailers or rail tracks to providedockside flexibility.

Several types of quick connect/disconnect couplings are avail-able for the full range of Loading Arms. An emergency discon-nect coupling is also available as an operator initiated device oras part of a sequence controlled “shut down” disconnect-sys-tem.

LNG Loading ArmsWith the recent development of LNG marine loading arms, Wood-field Systems is now well poised to provide a vital link in AkerKvaerner’s LNG value chain.

With the latest successful installation and commissioning ofour LNG loading arms, we are pleased to add this new technol-ogy to our extensive portfolio.

Our LNG transfer solution includes• Rigid pantograph link system - designed for minimum main-

tenance• Structurally supported product pipe• Stainless Steel product pipe• All bushes self lubricating• Hydraulic lines and fittings in stainless steel• All product swivel seals fully serviceable in situ - reducing

down-time• Loading arm fully balanced in all positions whilst empty

4 x 16” Marine Loading Arms - JTC - Singapore

LNG Marine Loading Arm

2 x 16” Marine Loading Arms - Port of Bristol - UK

Site installation of 16” MLAs

Marine Loading / Unloading Arms


Clycol Dehydration Package - Kerr McGee - MaclureField - North Sea

Ambient Loading ArmsWoodfield Marine Loading/Unloading Arms are generally designedin accordance with the O.C.I.M.F. ‘design and construction formarine loading arms’ and offer advantages in enhanced safetyand reliability in operation. Woodfield Marine Loading Arms needa minimum of service attention and only require routine mainte-nance.

SwivelsBoth our ambient and cryogenic swivel technologies are wellproven within the industry and our swivels have surpassed ex-pectations in OCIMF and life cycle testing. Our designs arecurrently being used for offshore loading systems within the AkerKvaerner Group and other companies in the market place.

Skid ModulesIn addition to our marine loading arms, Woodfield offers the de-sign and manufacture of Skid Modules/Packages for the Oil andPetrochemical Industries. Skid Package Pipework can be con-structed from Duplex, Stainless steel or Carbon Steel to suitclient process requirements.

HSEHSE features as a key agenda item at all levels of ourorganisation, and is focussed on the proactive prevention of ac-cidents. HSE is seen as an integral part of our operations andHSE training is mandatory for all of our staff.

Training and after-salesWoodfield also provide classroom and onsite training for jettyoperators for all types of loading arms and ancillary equipment.This training can include operator testing competency, loadingarm installation/integration and HSE awareness/Best practisetraining.

All this combined with first class service support, installationand a spare part’s service makes Woodfield Systems the firstchoice for end users and contractors.

Contact [email protected]

Marine Loading / Unloading Arms

8” Marine Loading Arm - TotalFinaElf - Belgium

Another successful transfer for JTC & Woodfield Sys-tems

hydraulic power units

Documents

intermediate

laminated

drive length

marine loading

wireless remote

upper racking

wire line

tubular feeding