Arctic Drillship - NTNU

Public © 2013 Aker Solutions Preferred partner

Preferred partner

Arctic Drillship

Henrik HannusVice President | Deepwater and Arctic Solutions


Background and introduction

Substantial O&G reserves in the ArcticsOur ambition: “The Preferred Partner”Uncertain development timelines Technology investments risky

Slide 2

ChukchiBeaufort

Kara EastBarents

East

Greenland

West

OIL

(Bill

ion

BB

L)

GAS

(Tril

lion

CF)

Yamal

Public © 2013 Aker Solutions Preferred partner05/11/2013 Slide 3

Regional Opportunities

Public © 2013 Aker Solutions Preferred partnerSlide 4

Arctic Challenges

Vulnerable eco-systemDevelopmentAccident consequences

Extreme temperaturesIce conditionsLimited infrastructure Long tie-back distancesLong distance to marketLimited Daylight (Winter season)Limited weather window:

Construction, Installation, Hook-up & Completion

Personnel Health and Safety


What’s different (compared to the North Sea)?

Slide 5

Level ice

Ice ridge Rubble field

Icebergs

Ice ridge – Cross section

Public © 2013 Aker Solutions Preferred partnerSlide 6

Experience from the Arctic

Kulluk drilling buoyMoored floaterDrilling in the 80`sDesigned for sea iceHeavy ice managment and disconnectable

MoliqpaqBottom founded caissonDrillingDesigned for sea ice

Sakhalin II GBS structuresBottom founded multi-leg structureProduction and drillingDesigned for sea ice

Terra Nova/White RoseFPSO with disconnectable turret systemProductionIcebergs – no sea ice

Kulluk Molikpaq

Sakhalin II GBS Terra Nova


Johan Castberg (Statoil)

Screening study (completed)Shallow draught buoyFPSOSemi Submersible

Concept study (ongoing)Semi SubmersibleFPSO

5 November, 2013Slide 7


Amauligak (ConocoPhillips)

Beafourt SeaField Development Concept ScreeningEarly phase sizing of different substructures and topsides

5 November, 2013Slide 8


Arctic Drillship Development Joint Cooperation between Aker Solutions and Aker Arctic

Target: Kara, Beafourt, Chucki Sea drilling

2012-2013Design of drillshipIce Model Test at Aker ArcticOutline Specification development for Yard inquiry

Status August 2013: Interacting w. yards and drilling contractors

5 November, 2013 Aker Solutions Arctic DrillshipSlide 9 5 November, 2013Slide 9

AARC: Ship design for ice covered waters

AKSO: Platform and drilling design for harsh environment


Design BasisWell depth: Total depth of 7500 m

Operations in open water90 % operability for North Atlantic wave conditions

Operations in ice:Drilling: Ice conditions equivalent to 1.5 m level ice –90% concentration – Floe size 150-200 mSurvival: Ice conditions equivalent to 1.5 m intact level ice

Response restrictions for operation:Drilling operation: Offset corresponding to 2 deg Drill string connected: Offset corresponding to 6.5 degDrill string disconnected no offset restrictionTurret design for 10 deg riser angle

Constant draft



Design Basis

Operations in late ice season, summer and early ice season

Exploration wellsCoil tubing & wireline operationsRunning and pulling X-mas treeWell testing and flaring

Operational water depth: 1500 mDrilling in ice and open water (>100 m): Turret MooredDrilling in open water: Dynamic positioningsystem (DP3)

1 ½ conventional triple stand derrick

Two BOP stacks



Arctic Drillship - General DataOperating displacement: 89 000 tonnesDimensions:

LOA: 232 mB: 42 m

Accomodation for 160 in Single Bed Cabins 12 line mooring system Thrusters:

FWD: Two nozzle retractable thruster - to be retracted in ice AFT: Three open podded thrusters - suitable for operation in ice

DnV +1A1, DRILL (N), CRANE, HELDK-SH,F-AM, EO, DP Class 3 (DYNPOS AUTRO, POSMOOR ATA, Classification for operation in ice: PC5, DAT(-40°C) Classification notation, Russian Maritime Register of Shipping (RMRS): KM() Arc6 [1] A1 DYNPOS -2



Arctic Features

Hull lines optimised for iceCladded drilling topside and derrickFWD turret

Operability in iceHandling from one side into derrick


Large HVAC facilityLQ aftLow CoGDisconnectable turret


Hull side view

5 November, 2013 Aker Solutions Arctic DrillshipSlide 14

Ice breaking reamer

Ice breaking zone

Azipodplateau

Public © 2013 Aker Solutions Preferred partnerDate Month 2011Slide 15

Drilling Steps at Disconnection due to Sea IceIce survey (recon) - days

Stop drillingCirculate and condition mudPOOH Install deep plug in casingInstall shallow plug in casingRetrieve BOPInstall cap on top of wellheadPrepare and move off location

Ice management failure - hoursStop drillingCirculate and condition mudPOOH into casingInstall hang off toolClose BOP and change riser to waterDisconnect LMRPPrepare and move off location

Emergency - minutesStop drillingPull off bottomHang off string in BOPCut string with shear ramDisconnect LMRPMove off location

Public © 2013 Aker Solutions Preferred partnerDate Month 2012Slide 16

Disconnectable turret - Principles

Quick release turret (Tentech)

• Quick riser connectors

• Risers and moorings attached to release buoy


Model Test Results

Limited ice transport below baseline or in area with drilling riserMeasured mooring load for 170 degree level ice drift reversal tests

Highest load experience in intact ice Intact ice + using thruster – 50 % reduction of loadsIce management – 50 % reduction of mooring load

Intact ice vs 90 % concentrationFor 200, 100 and 50 m floe sizes

Ice management + use of thusters – 60 % reduction in mooring load



Model updated for target properties


Numerical simulations updated for actualice properties, ice failing scenario and observed ice transport

Model updated for non-linear mooring system

100 m water depth400 m water depth

Check towards target ice conditionsManaged ice (90 % concentration) gave reduction of responses equal to 50 % or more


Challenges

Hull shape to limit ice loadsMooring disconnection

Under load - reliabilityBuoy requires riser retrieval => long time

Mooring re-connectionIndividual lines => long time

Riser protectionWinterization of facilities

22. April 208Slide 19

Buoy concept need no turret(but other challenges)


Copyright and disclaimerCopyrightCopyright of all published material including photographs, drawings and images in this document remains vested in Aker Solutions and third party contributors as appropriate. Accordingly, neither the whole nor any part of this document shall be reproduced in any form nor used in any manner without express prior permission and applicable acknowledgements. No trademark, copyright or other notice shall be altered or removed from any reproduction.

DisclaimerThis Presentation includes and is based, inter alia, on forward-looking information and statements that are subject to risks anduncertainties that could cause actual results to differ. These statements and this Presentation are based on current expectations, estimates and projections about global economic conditions, the economic conditions of the regions and industries that are majormarkets for Aker Solutions ASA and Aker Solutions ASA’s (including subsidiaries and affiliates) lines of business. These expectations, estimates and projections are generally identifiable by statements containing words such as “expects”, “believes”, “estimates” or similar expressions. Important factors that could cause actual results to differ materially from those expectations include, among others, economic and market conditions in the geographic areas and industries that are or will be major markets for Aker Solutions’ businesses, oil prices, market acceptance of new products and services, changes in governmental regulations, interest rates, fluctuations in currency exchange rates and such other factors as may be discussed from time to time in the Presentation. Although Aker Solutions ASA believes that its expectations and the Presentation are based upon reasonable assumptions, it can give no assurance that those expectations will be achieved or that the actual results will be as set out in the Presentation. Aker Solutions ASA is making no representation or warranty, expressed or implied, as to the accuracy, reliability or completeness of the Presentation, and neither Aker Solutions ASA nor any of its directors, officers or employees will have any liability to you or any other persons resulting from your use.

Aker Solutions consists of many legally independent entities, constituting their own separate identities. Aker Solutions is used as the common brand or trade mark for most of these entities. In this presentation we may sometimes use “Aker Solutions”, “we” or “us” when we refer to Aker Solutions companies in general or where no useful purpose is served by identifying any particular Aker Solutions company.

Slide 20 5 November, 2013

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Arctic Drillship - NTNU