1An Overview of the Design, Build and Testing

of the CO2 Rig

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Contents:

• Background• Design Phase - Summary• Build Phase - Summary• Testing - Summary• Offshore Operations Support

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Background:Where did we start….?

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Design PhaseScope:

• Design and fabrication of the subsea rig • Design and build of top-side control system• Design and fabrication of the CO2 injection pipe• Factory Acceptance Testing of the fully integrated system• Dock (submerged) Testing including injection pipe installation in seabed • Provide Operational Spares• Provide Operator Training• Provide Offshore operations support

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Design PhaseInitial concepts – subsea module (2015):

CISPipe end

ROV Panel

CO2 / Waterflexible pipe

Pre-formed push pipe

Hydraulic pipe Drive motors

Ballast

Embedment features

• ROV intervention to operate rig• Rig remains on seafloor during CO2

injection

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Design PhaseInitial concept – subsea module (2018):

Frame

Pre-formed push pipe

Hydraulic power unit

Embedment features

Hydraulic pipe Drive motors

Ballast

• No ROV operations Panel• Now integrated subsea power

and comms• CO2 injection to be from

separately deployed source• Rig to be recovered between

pipe installations/during CO2injection

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Design PhaseFinal concept – subsea module (2018/19):

Frame

Push pipe guide mechanism

Hydraulic power unit and controls

Embedment features

Hydraulic pipe Drive motors

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Design PhaseOverall System Block Diagram:

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Design PhaseChallenges:• CO2 pipe injection method:

• Curved pipe geometry• Precise positioning in seabed• Connection of external CO2 supply• Capability to insert and retract pipe • Verification of pipe diffuser position following pipe insertion

• ‘Stuck Pipe’ Scenarios:• Rig breakdown/power failure with pipe partially inserted• Pipe refuses during insertion• Pipe bends/jams during pipe insertion due to ground conditions

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Design PhaseChallenges:• CO2 pipe injection method:

• Realtime pitch and roll monitoring during rig land out and operations (accelerometer)

• AHRS for heading reference during land out• COTS linear engine utilized for pipe

injection – bi-directional and marinized

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Design PhaseChallenges:• ‘Stuck Pipe’ Scenarios/Pipe Detection:

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Retractable rollers on linear engine release pipe on power failure (accumulator driven)

Hydraulic push units eject pipe from linear engine on power failure (accumulator driven)

Driven roller setsIdler roller sets

PART NOTES:

MATERIAL CERTIFICATION REQUIRED1.UOS DIMENSION TOLERANCES PER TABLE2.UOS BREAK ALL SHARP EDGES .03".3.UOS FILLET RADII .015" MAX.4.UOS SURFACE QUALITY 63 µ in5.ALUMINUM PARTS TO BE ANODIZED6.BEFORE THREADED INSERT

7. ANY ADDITIONAL MATERIALS (3D MODELS,ETC PROVIDED SHOULD BE TREATED ASREFERENCE. DRAWING SPECIFICATIONSSHOULD BE FOLLOWED.

AA

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SECTION A-ASCALE 1 : 1

31

SECURE IN PLACE USING WELD AT TIP21

R02

ADD SOME SILICONE SEALENT TO TIP

0.25

SECURE IN PLACE USING WELD AT TIP

REV ZONE DESCRIPTION DRN DATE CHK DATE APP DATE

R01 INITIAL RELEASE MDW 05-Sep-2018 PPR 05-Sep-2018 PPR 05-Sep-2018

R02 D2 UPDATE TIP MDW 05-Oct-2018 PPR 05-Oct-2018 PPR 05-Oct-2018

BILL OF MATERIALSITEM # QTY UOM PART NUMBER REV DESCRIPTION MATERIAL DESCRIPTION MANUFACTURER VENDOR

1 1 EA SCI18-ME-90201-R03 R03 TIP PIPE CARBON STEEL2 1 EA SCI18-ME-90205-R01 R01 PIPE HEAD CORE 4340 HT SR3 1 EA P0005699 R01 POROUS FILTER 0.625IN OD X 0.5IN ID 18N LG (PORE SIZE 9um) SST 316 AMESPORE

SCALE VERSION WEIGHT(lb)

DWG NO

SHEET

OF

D

1:12

TOLERANCESANGLESDECIMALS X.X

DECIMALS X.XX

THIRD ANGLEPROJECTION

THIS DOCUMENT IS PROPRIETARY TO CELLULAROBOTICS LTD. AND CONTAINS CONFIDENTIALINFORMATION. NO USE OR DISCLOSURE, INWHOLE OR IN PART, IS TO BE MADE WITHOUTTHE WRITTEN PERMISSION OF CELLULAROBOTICS LTD. ALL RIGHTS RESERVED.

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8 7 6 5 4 3 2 1

±0.3°±0.1

1 2

B109-9000 BILL FOX WAY TEL: 604-540-5530BURNABY, BC FAX: 604-525-5570 V5J 5J3, CANADA WWW.CELLULA.COM

±0.01

SCI18-ME-90200-R03

PIPE WELDMENT

SCI18C02 PIPE WELDMENT

±0.005DECIMALS X.XXX

85.44

REV

PDF CREATION DATEINTERPRET PER:

ANSI Y14.3 ANDANSI Y14.5M

DO NOT SCALESHEET SIZE: D

UNITS

in

10-Oct-2018

R02STATUS

Powerful neodymium magnet installed in pipe tip for detection by ROV magnetometer

Amespore sintered CO2 diffuser

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Design PhaseCONOPS Animation:

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Build PhaseSchedule:

Planned Actual

• Contract Execution 16 May 2018 16 May 2018• Kick-off meeting 07 June 2018 05 June 2018• MS0: Preliminary Design Review (internal) 09 July 2018 24 July 2018• MS1: Critical Design Review (Client) 09 Aug 2018 09 Aug 2018• MS2: Completion of Build and FAT 14 Feb 2019 24 Jan 2019• MS3: Completion of Dockside Testing 21 Feb 2019 26 Feb 2019*• MS4: Completion of Client Training 21 Feb 2019 26 Jan 2019• MS5: Completion of Packing for EXW Delivery 22 Feb 2019 04 Mar 2018• MS6: Offshore Operations Support April 2019 24 Apr – 2 May 2019

* Included factory retesting of pipe insertion mechanism – post dock trials which were completed 26 Jan 2019

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Build PhaseMain Assemblies/Systems:

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Build PhaseMain Assemblies/Systems:

-

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Testing PhaseFactory Acceptance TestingLocation: Cellula Robotics Ltd, Burnaby, BCDate: 24 January 2019.

• Fully function tested (dry)• Pipe loaded and unloaded• Pipe emergency release tested

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Testing Phase

Dock Test No. 1:

Location: Allied Shipbuilders Ltd., North Vancouver, BC

Date: 26 January 2019. • 2 Pipes pushed – 100% penetration

• Pipe emergency release tested• No water ingress• No IR faults• No comms faults

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Testing PhaseDock Test No. 1:Hmmm… but something doesn’t look quite right…?

‘unpushed’ pipe geometry

pipe geometry after push test

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Testing PhaseRetest – post Linear Engine Roller adjustments:

Pre-test pipe geometry set out Post-test pipe geometry check

Post test pipe geometry within tolerance

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Offshore Operations SupportLocation: Goldeneye Gas Reservoir (depleted) UKCS.Dates: 24 April – 2 May 2019

• 2 Pipes successfully installed and connected to CO2 supply

• CO2 verified as flowing through pipe

• CO2 bubbles observed and monitored at the seafloor

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Thank-you!

Copyright © 2019 Cellula Robotics Ltd.

Allan SpencerManaging Director (UK)

Tel +44-7961 179 973Email allan.spencer@cellula.co.uk

AddressCellula Robotics (UK) Ltd.Brathens Eco-Business ParkHill of BrathensBanchoryAberdeenshire AB31 4BW

Tel +44 1330 826 889Email info@cellula.comWeb www.cellula.com

mailto:allan.spencer@cellula.co.ukmailto:info@cellula.commailto:info@cellula.com

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