Aker H-6e Semi Submersible Drilling Rig

Aker H-6e Drilling Semi Submersible for 

Ultra Deep Water and Harsh Environment 

Pål Lindstad 

Norsk Offshoredag 2006 

Tirsdag 23. mai - Grand Hotel, Oslo 

part of the Aker group

Aker H-6e Drilling Semi Submersible 

World’s biggest and most 

advanced drilling semi 

■ 

The versatile H-6e will be able to drill and 

complete wells in water depths ranging 

from 100 to 3000 m and in harsh 

environment 

■ 

The “e” stands for extreme 

■ 

Enhancement of the existing Aker H-4.2 

drilling semi submersible 

■ 

■ 

■ 

Transverse truss arrangement between 

eight columns 

The design has its roots in the well 

known Aker H-3. 

Configured for dynamic positioning to 

3000 m WD and mooring in 500 m WD 

Topsides/Hull 

weight 

15.000/ 

17.200 

Deck size 

90X70m 

Displacement 

64 500t, Operating Draft 23 m 

59 600t, Survival Draft 19m 

44 500t, Transit Draft 9,7m 

24-May-06 Slide 2 

© 2006 Aker Kvaerner 


Aker H-6e Semi Submersible Drilling Rig 

• Large payload and storage capacity 

• Excellent and proven motion characteristics 

• High drilling and completion efficiency 

• Double RamRig 

• Vertical riser and casing racking 

• Independent handling of BOP and 

X-mas trees 

• Maximum parallel activities 

• Large working space for safe and efficient operations 

• Protected working and storage areas 

• Ample bed capacity 

• Low emissions to the environment 

• Zero harmful discharge to sea 

• Real time remote drilling systems diagnostic capabilities 

• Prepared for full winterization 


part of the Aker group 

© 2006 Aker Kvaerner


The H-6e 

represents today’s 

state of the art 

2006 

1999 

3000 m WD 

DP Class 3 

POSMOOR ATA 

Dual Ram Rig 

1986 

Aker H-4.3 

1974-1983 2000 m WD 

thrusters assisted 

moored 

Dual Activity Derrick 

● 37 units of H-3 and H-4 

design have been built. 

● 18 delivered from own 

yards, the remaining built 

by other yards on license 

Aker H-4.2 

Aker H-3&3.2 




H-6e Semi Submersible Drilling Rig 

Double Ram Rig 

High Efficient Parallel Operations 

DRILLING PARTICULARS 

•Double Ram Rig® by AK Maritime Hydraulics 

•Hook load main/aux: 908 mT / 454 mT 

•Rotary main/aux: 60” / 60”,908 mT / 454 mT 

•Top drive main/aux: 908 mT / 454 mT, Torque 78 kNm/ 78 kNm 

•Vertical Riser rack: 2, 537 m 

•Set back: 

785 mT 

•Vertical Casing rack:1300 m of 13 3/8” (20” max) 

•Riser tension: 6 x 242 mT, Direct acting, Stroke 16,7 m 

•Pipe deck area: 1 275 m 2 

•B.O.P: 18 ¾” 15M, 5 rams, 2 annulars, Mux, Cameron 

•Marine riser: 21”, 75 feet, Aker Kvaerner Clip type 

•Independent handling of B.O.P and X-mas trees 

•H.P Mud Pumps: 4 x 2 200 hp, 7 500 psi, Wirth 

•Shale Shakers: 4 x triple deck, Axiom 

•Degassers: 2 x Centrifugal Vacuum, MI Swaco 

•High capacity automatic mud mixing system, STEP Offshore 

•Cuttings handling and offloading system 

•Prepared for Riser Less Mud Return System 




Double RamRig - Main Duties 

Simultaneous operations save time and cost 

Main Rig: 

•Drilling entire well 

•Running of BOP and Riser 

•Wire line 

•Coiled tubing 

Auxiliary Rig: 

•Build and rack stands of Drill pipe and Casing 

•Running BOP and Riser to 1300 m WD 

•Drilling top hole, no mud return 

•Run 30” and 20” Casing strings 

•Run X-mas trees 

Blockspeed [m/s] 

Block Speed [m/s] 

2,5 

2 

1,5 

1 

0,5 

0 

2,5 

2 

1,5 

1 

0,5 

Main RamRig 

0 200 400 600 800 1000 1200 

Load [sh.ton] 

Aux RamRig 

0 

0 100 200 300 400 500 600 700 

Load [sh.ton] 





Aker Kværner Maritime Hydraulics Double RamRig 





Aker Kværner Maritime Hydraulics Double RamRig 





CONSUMABLES 

STORAGE CAPACITY 

Mud Pits on Deck 

Liquid Mud, Column 

Bulk Mud, Column 

Bulk Cement, Column 

Base Oil, Pontoon 

Brine/Compl. Fluid, Pontoon 

Drill water, Pontoon 

Drilling drain, Column 

Fuel Oil, Pontoon 

H-6e 

800 m3 

900 m3 

390 m3 

390 m3 

1400 m3 

1200 m3 

3000 m3 

300 m3 

4 100 m3 





H-6e MAIN PARTICULARS: 

Design: 

Registration: 

Classification: 

Water Depth: 

Drilling depth: 

Variable Drilling 

Load: 

Diesel Generators: 

Thrusters: 

Mooring system: 

Living Quarters: 

Helicopter Deck: 

Lifeboats: 

Deck cranes: 

DP Drilling Vessel, Aker Kværner 

Bahamas 

+DNV 1A1, Column Stabilized Drilling Unit (N), DRILL (N), 

HELDK, CRANE, E0, DYNPOS AUTRO, POSMOOR ATA 

3, 000 m 

10, 000 m 

7, 000 mt, all drafts. 

8 x 5 300 kW, 720 rpm, Rolls Royce 

8 x 800 kN bollard pull, variable speed, fixed pitch, Rolls Royce 

8 point anchor line system, 84 mm Chain, 15 mT anchors. 

140 single bed cabins, extendable to 160, Leirvik Module Technology (LMT) 

Sikorsky S92 and S-61N, Superpuma AS332L2, EC225 and EH-101. 

Free fall type, 4 x 80 men, Norsafe 

2 ea, max capacity: 85 mt at 17 m, max reach 51m, Kenz Figee 





HULL DIMENSIONS 

Aker H-6e 

Pontoon Length 

Breadth Pontoons 

Pontoon Beam 

Pontoon Height 

Main Deck Length 

Main Deck Breadth 

Columns 

120 m 

77 m 

19,5 m 

10 m 

90 m 

70 m 

12,5 x 12,5 m 




Drill Floor EL. 63 000 

Shale Shaker EL. 55 500 

Pipe Deck EL. 50 000 

Bottom deck EL. 37 000 

Mezz Deck. EL. 45 500 

Lower Deck EL. 39 000 




Aker H-6e Lower Deck, EL 39. 000 




H-6e Model test-by Marintek, Trondheim - Norway 



100 year condition Hs 17,5 m 


Motion comparison 

0.60 

Max vertical motion at drill floor 

(single amplitude) 

Vertical motion / Hs 

0.50 

0.40 

0.30 

0.20 

0.10 

0.00 

8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 

Tp (sec.) 

Aker H-6e 

Aker H4-2 

Aker H3 

CS Other 30 

CS Rigs 45 




Motion comparison with other semis 

Drilling Rigs 

Heave RAO comparison, Operation draft 

Haltenbanken seastates 

Motion response (m/m) 

1.800 

1.600 

1.400 

1.200 

1.000 

0.800 

0.600 

0.400 

0.200 

16 % 

14 % 

12 % 

10 % 

8 % 

6 % 

4 % 

2 % 

Seastate probability 

H-6e operation 

H-6e survival 

H-4.2 

H-3 

CS 45 

Other rigs 

CS 30 

Kristin production platform 

Haltenbanken seastates 

0.000 

0 5 10 15 20 25 30 

Haltenbanken winter 

99 % of rig operations in 

storms 

this period range 

Period (s) 

0 % 




H-6e Motions 

■ 

Excellent heave motions for seastates with periods 5s-15s. 

■ 99% of seastates on Haltenbanken have wave peak periods below 15.5s 

■ 

Low heave motions for operational conditions a function of hull design and 

operational draft 

■ 

Heave natural period similar to North Sea production platforms, e.g. Kristin 

located on Haltenbanken. 

■ 

Heave motions in dominating seastates a critical parameter for operability of 

the rig. The H-6e has proven through analysis and model testing to have 

excellent characteristics for these periods. 




B(-12 

Aker H-6e Zero Harmful Discharges to Sea 

■ 

Drain systems. 

● Closed drain from drilling areas – no discharge to sea. 

● Drain Storage tank : 300 m 3 

● Oily drain cleaned to 15ppm before discharge to sea. 

● Drain from clean areas discharged to sea without treatment. 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

■ 

Oily water treatment facility. 

Sewage treatment facility. 

Double physical barriers. 

BOP control fluid return and recovery system. 

Cuttings handling system 

Space allocated for future cuttings treatment unit. 

Large reserve mud tanks, re-use of mud 

Safe loading and offloading – reel type hose loading stations 

State of the art automatic chemical additive systems for mud and 

cement slurries - Controlled use of chemicals 

Facilitate for use of green chemicals 

Facilitate for an effective waste management system 

Prepared for Riser Less Mud Return System 




Lysbilde 18 

SB(-12 

drain fra boreområder samles og fraktes til land. Fra områder der det kun kan forekomme olje vil det bli samlet i tanker og behandlet i et 

filtreringsanlegg. Vannet som slippes ut vil inneholde mindre enn 15ppm olje. Vann fra rene områder der det ikke forekommer olje eller 

kjemikalier vil bli sluppet ut uten noen behandling. Det er et miljøtiltak at vi ikke bruker energi på å behandle dette vannet. 

Sewage vil bli behandlet i et biologisk renseanlegg. Det er også lagt opp til en by-pass som kan benyttes når man evt. er langt fra land. I store 

havområder vil det være mer miljøvennlig å la havet rense kloakken enn å bruke energi på et renseanlegg der slammet må fraktes til land. 

Doble fysiske barrierer - det jobbes med løsninger rundt moonpool området. 

Cuttings handling system: Borekaks blir samlet opp i tanker for transport til land. unntaket er topphullseksjonen som spres på havbunnen. 

Topphullseksjonen bores med vannbasert mud som ikke inneholder miljøskadelige stoffer og det er tillatt å slippe dette ut. 

Slurrification unit: Dersom det bores i et område der man har en avfallsbrønn kan det installeres en slurrification enhet for reinjeksjon av kaks 

etc. 

Sletten, Brita (AKBPW40513 - 107367); 06.02.2006

Aker H-6e Winterization 

DESIGN ISSUE FROM DAY ONE 

•Normally manned Working areas kept indoors 

•Pipe and cable routing kept indoors 

•Maximum use of the double bottom 

•Weather protected maintenance and 

inspection areas 

•Cladding of Ram Rig and moon pool area 

•Heat tracing of critical equipment and systems, 

escape routes, safety equipment, muster areas 

•Heating units on drill floor and moon pool 

•Steam service outlets for de-icing 

•Heating medium system for frost protection 

•Protection of EIT equipment 

•Insulation of rooms and compartments 




H-6e Schedule 

2005 2006 2007 2008 2009 

J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D 

Start 

Shop-drawings 

Start prefab 

Hull prefab & preassembly 

Main Scantling 

Approval 

Hull prefab & preassembly 

Assembly 

Area Engineering Hull 

Systems Engineering 

Area Engineering Topside 

Assembly 

Tow 

Site move & jack 

HU 

Out of 

dock 

HU 

Out of 

dock 

Delivery: 

H-6e alpha February 2008 

H-6e beta Oct 2008 

Vendor info. 

Assembly 

Topside prefab & preassembly 

Inst. 

Thrusters 

& Sea 

trials 

Inst. 

Thrusters 

& Sea 

trials 

Critical PO`s 

Bulk Materials 

Equipment 

deliveries 

10 to 15 

months 

Assembly 

Site move & jack 

Topside prefab & preassembly/modules 




H-6e Subcontracting 

Deck Elements 

• Mostostal 

Pomorze 

(Poland) 

• Energomontaz 

(Poland) 

• Schwartz 

Hautmont 

(Spain) 

Ram Rig 

Aker Kværner Maritime Hydraulics 

Norway 

Living Quarters 

Leirvik Module Technology 

(LMT), Stord, Norway 



Hull 

Dubai Dry Docks 

(DDD) 


Engineering and Construction of the Aker H-6e 

Drilling Rig is based on a split building location 

To meet these challenges, 

Spain 

Dubai 

Verdal 

we are working as 

one team 

Stord 

Oslo 

Kristiansand 

Brevik 

Poland 




Assembly site: 

Aker Kvaerner Stord, Norway 

Extend dock / Jack-up 

of Topside / Connect 

Topside & Hull 

Topside assembly in 

the ”Stord Hall” 

H-6e 

Assembly of steel 

sections in the ”Stord 

Hall”. Assembly of 

pre-assemblies in 

hall3 




H-6e Assembly at Aker Kvaerner Stord 




Aker Kværner with proven project execution 

● Proven execution model for large 

and complex projects, relevant 

Production Floater references 

include : 

■ Kristin semi for Statoil (2005) 

■ Snorre B semi for Norsk 

Hydro (2001) 

■ Njord semi for Norsk Hydro 

(1997) 

● Long established and close 

relations between in-house 

engineering and fabrication 

capacity 

Kristin production semi 

●Ultra high temperature & high 

pressure (HTHP) field 

●Delivered March 2005 

●Client: Statoil 

●Yard: Aker Kværner Stord 

●Delivered on time and budget 




Aker H-6e Drilling Semi Submersible 

■ 

Combination of 3 unique key factors to success: 

Hull Concept: 

Proven and renown. Demonstrated performance and durability on 

the Seven seas for more than 30 years 

Dual Activity Drilling Concept: 

A state of the art high efficient Double Ram Rig. 

Delivery: 

A well proven and predictable Project Execution Model 

Thank You For Your Attention

Aker H-6e Semi Submersible Drilling Rig

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