ARCTIC ICE OPERATIONS SESSION DYPIC – A Multinational R&D ... · MARTEC ERA-NET Project 7. th....

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DYNAMIC POSITIONING CONFERENCEDYNAMIC POSITIONING CONFERENCEOctober 9-10, 2012

/

DYPIC – A Multinational R&D Project of DP Technology

ARCTIC/ICE OPERATIONS SESSION

j gyin Ice

Peter JochmannDYPIC Coordinator

Hamburg Ship Model Basing p

DYPICA Multi-National R&D Project on

DP Technology in Ice

MTS DP 2012October 9 - 10th 2012October 9 - 10th, 2012,

Houston, Texas USA

Peter JochmannDYPIC Coordinator

On behalf of the

DYPIC Partners

owner

Text Box

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Presentation ContentPresentation Content

Introduction of Project Partners and Sponsors Introduction of Project Partners and Sponsors Objectives Project Structure C t t d R lt f W k T k Content and Results of Work Task

Model Tests Phase I Managed Iceg

Customized DP System for Model Basin Model Tests Phase II Conclusion Conclusion

10/10/12 DYPIC - A Multi-National R&D Project of Dynamic Positioning in Ice - 2

DYPICDYPICMARTEC ERA-NET Project

7th Framework Program

6 partner from 3 countriesDuration 3 Years January 2010 to December 2012

3DYPIC - A Multi-National R&D Project of Dynamic Positioning in Ice -10/10/12

DYPICDYPICMARTEC ERA-NET Project

7th Framework Program

funded by the national governments

Total Budget: 2.39 Mill. €Total Grant: 1.48 Mill. €Partner Contribution: 0.91 Mill. €

4DYPIC - A Multi-National R&D Project of Dynamic Positioning in Ice -10/10/12

MotivationMotivation Ongoing Developments

in Arctic Regionsin Arctic Regions

Intensified Exploration of Oil and Gas

Development of Oil and Gas Fields in Deeper Ice covered Waters

DP System for Ice Model Tests allows Determination of Station Keeping o S a o eep gCapability during an early stage of the Vessel Development


BackgroundBackground

13 % of undiscovered Oil 30% of undiscovered Gas

Arctic Oil and Gas Reserves


USGS 2008: Estimates of Undiscovered Arctic Oil and Gas

BackgroundBackgroundArctic Sea Ice State in 2012 as reported by NSIDC

2012 year of lowest ice extent Decrease of multi-year ice Decrease of first year ice thickness


BackgroundBackground

DP Operations in ice will be a future necessity Oil and gas exploration and production move into deeper watersg Concept

moored and/or DP with/without ice management support There is a need to firstly prove the applicability of automated DP and


then to enhance its performance in ice

Project LayoutProject Layout

Benchmark and Acceptance Test of DP System

DevelopmentDevelopment

of a Numerical

Development and

Fabrication of a DP-System

Ice Modely

for Ice Model Testing

Definition of State-of-the-Art

Characterization of Application Needs

Impact of Ice Scenarios on Station Keeping


State of the Art Application Needs p g

State of the Art1991/6

Int. Arctic Ocean 1999

”First” DP 2004

ACEX IODP

2005/6SHALDRIL

2008Kanumas

State of the Art

Exp. operation ACEX IODP I/II Kanumas

Learning from full scale expeditions: Current open water DP system lack ability of automatic control in ice Most critical scenario when ice drift speed tend to zero and drift direction changes Ice management (detection, tracking, forecasting) is crucial to ensure success Allowable offset due to great water depth was recognized as a key to success of

IODP Expedition 302 ACEX Nozzle thrusters give extra force in low speed operations and are contributing to

b tt t ti k i biliti


better station-keeping capabilities

Ice ScenariosIce Scenarios

Ice Scenario Model Test Condition RemarkLevel ice yes H = 75 cm Only Drillship testedManaged ice yes Different PRV and ADS testedPack ice no To be investigatedRidges no To be investigatedIceberg no To be investigated

Phase 1 model tests were performed only in managed ice Phase 2 model tests were performed in managed ice and in

level ice


Model Test Program Phase 1Model Test Program Phase 1


Model Test Concept Phase 1Model Test Concept Phase 1Free Floating Test

Different Heading AnglesOblique Towing Test

Different Heading Angles

o Const Heading by Rotary Tableo Heading by Generic DP System o Const. Heading by Rotary Tableo 1 DOF (Heave)o Acting External Forces Measured

o Heading by Generic DP Systemo 6 DOF o Propeller Washo Acting External Forces Calculated


from Measured System Thrust

Test Set Up Fixed Mode Oblique TowingTest Set-Up Fixed Mode - Oblique Towing -

Adjustable Adjustable Heading Angle 5° Steps

Model Fixed in 5 DOF but free to Heave

Forces and Moments d t i d bdetermined by 6-Component

Scale


Test Set Up Free Floating Mode DP ControlledTest Set-Up Free Floating Mode - DP Controlled - Model under control

of a generic DPof a generic DP system o Station Keeping

ModeModeo Constant

Heading Angle

Model free to move in 6 DOF

Acting forces

Photo: Trond Isaksen - Statoil

Acting forces calculated from azimuth propeller thrust


propeller thrust

Test Matrix Ice Fields Tested (Target Values; FS)Test Matrix - Ice Fields Tested (Target Values; FS)Field 1 IC= 9/10 LFloe= 15/30/45 mFi ld 2 IC 7/10 LFl 15/30/45Field 2 IC= 7/10 LFloe= 15/30/45 mField 3 IC= 7/10 LFloe= 7.5/15/22.5 mField 4 IC= 9/10 LFloe= 7.5/15/22.5 m

1 2 3 4


Managed Ice PreparationManaged Ice Preparation

Cutting Plan

17

g

10/10/12 DYPIC - A Multi-National R&D Project of Dynamic Positioning in Ice -

Managed Ice PreparationManaged Ice Preparation

Step 1Initial Ice Sheet

Step 2

0 12 62 72

Step 2

Step 3

Step 4


Managed Ice CoverManaged Ice Cover


Managed Ice DocumentationManaged Ice Documentation

stitching

Example of Analysis Results of the whole

basin test area

Preparation of Photos forImage Analysis


DP System LayoutDP System Layout


Customized DP System for Model TestingCustomized DP System for Model Testing

A ti P lArcticDrillShip

PolarResearchVessel


p

Customized DP System for Model Testing Several menus and status information are available Intuitive system control

Customized DP System for Model Testing

Intuitive system control Data displayed are either full or model scale


Sample ResultsHeading changes with drill ship model

Sample Results

4

5 ShipSet PointCircle of 5m 5

10

eg]

Heading

20

30

std : = 0.14deg, median = -0.03deg

%] Heading

-2

-1

0

1

2

3

Pos

Nor

th [m

]

Circle of 5m

1000 2000 3000 4000 50000

5

[de

Time (s)-0.4 -0.2 0 0.2 0.4

0

10

[%

Heading (°)

1000 2000 3000 4000 5000-2

0

2

[m]

Time (s)

Pos North

-1 0 1 20

5

10

15

std : = 0.91m, median = 0.08m

[%]

X (m)

Heading

X-Axis

Heading changes with research vessel model

-6-5-4-3-2-10123456-5

-4

-3

Pos East [m]

Time (s) X (m)

1000 2000 3000 4000 5000

-2

0

2

[m]

Time (s)

Pos East

-3 -2 -1 0 1 2 30

5

10

15

std : = 1.41m, median = -0.27m

[%]

Y (m)

Y-Axis

Heading changes with research vessel model

1

2

3

4

5

]

ShipSet PointCircle of 5m

500 1000 1500 2000 2500 3000 35000

5

10

[deg

]

Time (s)

Heading

-1.5 -1 -0.5 0 0.5 10

5

10

std : = 0.56deg, median = 0.09deg

[%]

Heading (°)Pos North

15

std : = 1.56m, median = 1.00m

Heading

-4

-3

-2

-1

0

1

Pos

Nor

th [m

]

500 1000 1500 2000 2500 3000 3500-4-20

24

[m]

Time (s)-2 -1 0 1 2 3 4 50

5

10

15

[%]

X (m)

-2

0

2

[m]

Pos East

5

10

std : = 1.63m, median = 0.85m[%

]

X-Axis

Y-Axis


-6-5-4-3-2-10123456-5

Pos East [m]

500 1000 1500 2000 2500 3000 3500Time (s)

-3 -2 -1 0 1 2 30

Y (m)

Model Testing Phase IITest Setup 1

Arctic Drill Ship ti i l loperating in level

ice, h=75cm, Totally wireless

d DP t lunder DP control Ice drift direction

controlled by DP Ice drift speed

controlled by carriage


Model Testing Phase IIModel Testing Phase IITest Setup 2

Arctic Drill Ship ti ioperating in

managed ice, h=75cm,C=9/10 Totally wireless

under DP control Ice drift speed

and direction controlled by main carriage


Model Testing Phase IIgTest Setup III

Station Keeping Mode, Ice drift created by wind

Model is placed in the middle of the basin Model is under full control of the DP System Ice is pushed by the main carriage


Ice is pushed by the main carriage

Summary & ConclusionSummary & Conclusion

A full scale DP System was successfully customized by DCNS/Sirehna for model testing in HSVA’s ice model basin

The DP System was tested for 2 vessel types, PRV and ADS, in le el ice and different managed ice conditionslevel ice and different managed ice conditions

System enables check of station keeping ability regarding All kind of ice scenarios All kind of ice scenarios Operation strategies Vessel design Hull lines Hull lines Propulsion system

Further work should focus on DP strategy


Thank you very much for your attentionThank you very much for your attention


ARCTIC ICE OPERATIONS SESSION DYPIC – A Multinational R&D ... · MARTEC ERA-NET Project 7. th....

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