HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
Transcript of HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
HARSH ENVIRONMENT SEMI-SUBMERSIBLE
DRILLING UNITHUISMAN PRODUCT BROCHURE
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DRILLINGGENERAL INTRODUCTION
Huisman offers complete drilling packages and is dedicated
to explore and realise new solutions to improve drilling
efficiencies and reduce well costs. Our projects are typically
complex and innovative, requiring solution-aimed thinking,
technical excellence and partnerships with our clients.
This approach has resulted in a number of new valueadding
solutions and delivery of innovative and technically
challenging drilling equipment sets.
Huisman has in-house capabilities for vessel design. This
allows us to provide solutions in which vessel and equipment
are fully integrated, leading to radically improved designs for
drilling vessels. The first drillships based on these concepts
have proven to represent a major step change in our industry.
The unique combination of our in-house design and
engineering expertise, production facilities, testing capacity,
and installation locations, enables us to deliver custommade,
state-of-the-art equipment on a turnkey basis: in
time, with fully operational equipment from day one. All
Huisman products are designed and built in accordance
with international standards and certified by recognised
authorities such as ABS, API and DNV.
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DRILLINGGENERAL INTRODUCTION
Huisman has developed a new semi-submersible drilling
unit “Huisman HES”. This unit uses a novel type of floater
design suitable for extremely harsh environments and
has excellent motion characteristics. The unit consists of
a round floater, eight columns and a round deckbox. The
drilling system is enclosed to provide a sufficient and safe
working environment. Station keeping is achieved by a 12
point mooring system.
SEAKEEPING
The shape of the unit possesses a special feature which
makes the heave motions of the unit exceptionally low. The
water volume surrounded by columns has a tendency to
behave as a partially closed system, having a piston mode of
the vertical water motion. By optimizing the shape of the ring
pontoon the frequency of this piston mode motion is tuned in
such a way that this motion is in the opposite phase with the
motion of the water around the unit. In result the excitation
forces on the unit caused by this internal water column motion
and the motion of the surrounded water will compensate each
other. The heave motion of the unit remains very low.
STRUCTURAL INTEGRITY AND FATIGUE
The ring pontoon connecting the columns below and the
deck box connecting the columns on the top make the whole
structure very strong and robust. Even in very high sea states
the stress level in the primary structure is very low avoiding
any fatigue issues.
DRILLING
The unit with its integrated drilling equipment will be suitable
for:
Exploration and production drilling operations
Completions
Coiled tubing and wire line operations
Well intervention
Installation of X-mas trees
Well testing
HES
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HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
HES
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HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
The design of the unit focuses on Efficiency, Health, Safety
and Environment. The unit features a flat main deck, a drill
floor flush with the main deck and a Dual Multi Purpose Tower
(DMPT) allowing offline activities. Safe and simple material
handling is achieved by the flush main deck/drill floor, a cargo
elevator and a forklift corridor in the deck box. The design
of the drilling package focuses on drilling efficiency and
versatility. The drilling package is suited to accommodate the
latest drilling technologies, such as automated tripping.
INSTALLATION AND COMMISSIONING
Since the DMPT is a single integrated unit that houses all
equipment, the interface with the vessel is greatly simplified.
In combination with the Huisman substructure, that comprises
the complete drill floor, control cabin, drilling VFD’s and
HPU, the DMPT can be fully tested and commissioned on
our quayside. After the testing and commissioning phase
the DMPT can be installed with one single lift onto the
vessel, significantly reducing the time the vessel has to
stay at the quayside. This integrated approach allows both
Huisman and the shipyard to build the equipment and vessel
simultaneously. It also reduces the number and complexity of
the interfaces between the vessel and the equipment, which
reduces the time for installation and commissioning.
MAIN ADVANTAGES
The DMPT has a hinged floor and no V-door limitations.
Therefore, it is possible to skid the BOP (or X-mas tree)
underneath the floor when it is hinged and then lowered on
the construction side. The BOP is then skidded from the aft
to the forward well center by means of a skid cart that moves
along the moon pool under the substructure. This handling
eliminates the need for a high substructure. The enclosed drill
floor is flush with main deck allowing safer operations and
lower accelerations on the drill floor.
Traditional semi
Huisman HES
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Heav
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Period [s]
Traditional semiHuisman HES
Range of typical wave periods
HESHARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
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HES
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HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
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DUAL MULTI PURPOSE TOWER
The vessels distinctive feature is the Dual Multi Purpose Tower
(DMPT). It has a welded box girder type load bearing structure
with a hoist on either side. One hoist is situated above the
well centre in the drill floor on the port side of the tower and
the other above the center in the construction floor on the
starboard side. There is no lattice type derrick structure
around the hoists, thus there is no V-door limitation, large
objects can be skidded or hoisted with the cranes directly to
the well centres or in the moon pool area.
The construction side is utilized for BOP and running of risers.
This can be done during drilling of the surface hole. Also
the handling of large subsea structures (X-mas trees) and
stand building is performed on the construction side. The
construction floor can be hinged in order to skid the SSBOP
or X-mas tree underneath. The structures can be lowered
into the water and the floor can be lowered to its’ original
elevation. This eliminates the need for a large substructure
height.
The DMPT also has some built-in redundancy, namely the
dual drum drawworks and the pipe handling system. Should
one of the winches fail the other can still operate the traveling
block at full load, however at half of the original speed.
Both well centres can operate from the two setback drums.
Therefore the system is still fully operational should one
pipe racker fail. Also the setback drums are outfitted with
redundant drives.
HARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
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1. SPLITTABLE BLOCKS (2X)
Push button reeving change to increase
block speed when handling lighter
loads
2. PIPE HANDLING SYSTEM
Efficient pipe handling system with 2
setback drums and 4 pipe rackers.
Capacity for up to 10,000 m drill pipe
and 2,900 m casing.
3. DRILL FLOOR
Spacious drill floor fully enclosed by
wind walls
4. RISER TENSIONER SYSTEM
The system comprises 8 wire line type
riser tensioners mounted vertically
under the drill floor inside the deckbox
5. PASSIVE HEAVE CYLINDERS
Two large cylinders with accumulators
linked to the traveling block
6. DUAL DRUM DRAWWORKS
Dual drum system with 2 fast lines with
active heave compensation.
7. CONSTRUCTION FLOOR
The floor can be hinged upward to skid
large equipment underneath
8. SSBOP SKID CART
Brings the SSBOP into the firing line
9. MOONPOOL SKID CART
Travels with a complete riser or tubular
string hung off on cart between both
well centers
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HESHARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
GENERAL
Operational areaMaximum water depthMax. drilling depth from water lineClass notation
worldwide harsh environment500
10,000DNV or ABS
mm
164032,800
ftft
MAIN DIMENSIONS
Diameter deck boxDiameter under water pontoonsHeight of main deck above base lineDeck areaOperational draughtSurvival draughtDisplacement at operational draughtDeadweightOperational payload
86.0102.042.0
580023.021.0
59,80028,30024,000
mmmsq mmmmtmtmt
282335136
62,4007569
65,85031,15026,400
ftftftsq ftftftststst
MARINE SYSTEMS
Main engines Marine diesel oil tanksFresh water tanksComplementHelicopter deck, max. type helicopter
8 x 1,8253,500
900200
S-92, EH101 or similar
MWcu mcu m
8 x 2,45022,0005,600
HPbblbbl
CRANES
80t pedestal crane (2 off)Safe Working Load main hoistSafe Working Load auxiliary hoist
40t riser gantry craneHeight under girder (from main deck)
8015
9.0
mt at 14.5m radiusmt at 46.8 m radius
m 30 ft
DMPT
Drilling side rated load (under crown)Construction side rated load (under crown)Clear height both sides (under crown)Stand lengthOverall height above main deckFoot printPower drawworks drilling sidePower drawworks construction side
820820
61.0
66.08 x 7.2
2x2,3002,300
mtmtm
mmkWkW
18001800200135217
26 x 242x3,080
3,080
kipskipsftftftftHPHP
HEAVE COMPENSATION DRILLING SIDE
Max. capacity compensation systemMax. compensation stroke (AHC), 8 falls 550 [mt]Based on regular waves with 15 [sec] periodMax. compensation stroke (PC), 8 falls 550 [mt]
8207.0
6.0
mtm
m
1,80023
19.7
kipsft
ft
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HESHARSH ENVIRONMENT SEMI-SUBMERSIBLE DRILLING UNIT
PIPE HANDLING SYSTEMS
Max. capacity, total for 2 drumsSize of drill pipeSize of casing or drill collarTotal length of drill pipe, triple RIII, for 2 drumsTotal length of casing, triple RIII, for 2 drums
6803 1/2
710,3602,880
mtup toup tomm
1,5007
1634,0209,450
kipsinchinchftft
RISER TENSIONERS
No. of riser tensionersTotal installed capacityMax. total operational capacity (2 out of operation, 90%)
8615365
mtmt
1,350810
kipskips
SKID CARTS
Moon pool skid cart hang off capacityCapacity SSBOP skid carts (supporting the SSBOP)Capacity X-mas tree skid cart
600400100
mtmtmt
1,320880220
kipskipskips
MARINE DRILLING RISER
Diameter main tubeOuter diameter buoyancyDepth ratingRiser joint lengthStroke telescopic joint
1,400900
22.8619.81
mmmmm
2155
3,0007565
inchinchftftft
CHOKE AND KILL MANIFOLD
Pressure ratingNumber of chokes
1,0342 remote,
bar2 manual
15,000 psi
DIVERTER
Diverter housing internal diameterDiverter internal diameterDiverter pressure ratingOutlet ball valves size
1,53654069
406
mmmmbarmm
60.521 1/41,000
16
inchinchpsiinch
DIVERTER
Gumbo boxNumber of shakers (one mud cleaner)Number of degasserNumber of mud pumpsMud pump power (each)Mud pump pressureDual stand pipe manifold pressure ratingCement manifold pressure rating
1624
1,640520517
1,034
kWbarbarbar
2,2007,5007,500
15,000
HPpsipsipsi
HUISMAN EQUIPMENT BV
Admiraal Trompstraat 2
3115 HH Schiedam
P.O. Box 150
3100 AD Schiedam
The Netherlands
Harbour no. 561
Phone: +31 (0)88 070 2222
Fax: +31 (0)88 070 2220
E-mail: [email protected]
www.huismanequipment.com
072015