Q7000DP3 WELL INTERVENTION VESSEL

Q7000DP3 WELL

INTERVENTION VESSEL

The Helix Q7000 DP Class 3 semisubmersible is an advanced, harsh environment Well Intervention Unit.

The Q7000 can perform through-riser Well Intervention and decommissioning operations in water depths ranging from 85m to 3,000m, utilizing the Helix designed Intervention Riser System (IRS) which features a High-Angle disconnect system. With its’ open deck plan and tri-axial configuration, the Q7000 is capable of a wide range of Production Enhancement operations as well as Well Clean up and Field development support. It is equally optimized for Well Decommissioning including suspension, tubing removal, tree recovery and sea floor clearance.

In operations, the unit has a variable deck load capacity of circa 3,000 Te in addition to well intervention and service fluids. The Q7000 is arranged with a sophisticated (active and passive heave compensation) 600 Te well intervention tower on the upper deck, and has a large flush deck with skidding system for Well Intervention support equipment and tubulars storage. It has below deck twin work class ROV systems, bulk fluids storage and pumping systems.

MAIN CHARACTERISTICSVessel Name Q7000Owner Helix Energy Solutions Group, Inc.Builder Jurong Shipyard, SingaporeDesign Helix ESG / JSPLYear Built 2017

DNV Class Notation

+1A1 Column Stabilized Well Intervention Unit 2, HELDK-SH, CRANE, E0, DYNPOS-AUTRO,

CLEAN, WELL (1), UKVS, BWM-T, COM-V (1)C(3)

Flag BahamasHelideck CAP 437 v. 7 for S-92 and S-61N

Accommodations Worldwide = 140 PersonsUK North Sea = 130 Persons

COMPLIES WITHUK HSE, UK CAA, CAP 437, IMO MODU Code, MARPOL, API 2C, NORMAN-27

PAYLOAD VDCLDeck and Column, Operational 3,000 mtDeck and Column, Survival 3,000 mtDeck and Column, Transit 1,500 mt

DIMENSIONSLength of Pontoons (LOA) 97.50 mBreadth of Pontoons 14.30 mCross Bracings Four (4)Upper Deck Length 70.20 mUpper Deck Breadth 61.10 mDepth of Deck Box 7.50 mTransit Draft 9.00 mOperating Draft 18.25 mDisplacement at Operating Draft 29,735 TeOperational Air Gap 8.75 mSurvival Draft 15.0 mSurvival Air Gap 12.0 mMoon Pool on Lower Deck 8.8 m x 6.5 m

PONTOONSDesign Max Transit Speed 10 knt

DP CAPABILITIESDP3 DNV ERN 99/99/99/99Unrestricted Worldwide Operation

ENGINE / ELECTRICAL ROOMS 8 x Diesel Generators 2,925 KW eachTotal Installed Power 22.4 mwEngine Room Four (4)High Voltage S.B. Room Four (4)Low Voltage S.B. Room Four (4)4 x Thrusters AFT 3,200 KW ea.4 x Thrusters FWDTwo (2) x 1,950 kW tunnelsTwo (2) x 2,000 kW swing down azimuthAC variable frequency drives

ADDITIONAL FEATURESAluminum helideck with fire suppressant box constructionBuoyant deck box for reserve stabilityGravity filled basket systemBallast overflow elevation – No backflowFlush deck operating principal for all deck operationsTwo (2) enclosed 150 hp ROV roomsHeavy weather launch and recovery cursor guide system

FLUID CAPACITIESWater Ballast 10,501 m3

Fuel Oil 1,799 m3

Drill Water 422 m3

Brine 321 m3

Acid / Special Fluids 305 m3

Potable Water 422 m3

Base Oil 162 m3

Fluid Header Tanks 145 m3

Well Return Tanks 173 m3

Dry Bulk 81 m3

Mud Tank 162 m3

OPERATION & WELL SERVICE EQUIPMENT

Huisman Well Intervention Tower

600/400/200 mt active and passive

heave compensationMax Clearance between hook and drill floor 42 m

Main DeckMoon Pool / Drill Floor 600 mt

Lower Deck Moon PoolHang-Off Trolley Guide wire system for shallow water deployment

400 mt

PORT SIDE DECK & SUBSEA AHC CRANE

Surface Limit 150 mt3,000 m WD 90 mt

STARBOARD SIDE CRANESurface (main) 160 mtSurface (fly Jib) 20 mt

PIPE & MATERIAL HANDLINGKnuckle Boom Crane 12 mtCatwalk Machine 26 m x 45 mtDeck Skidding System, 6 Pallet System 150 mt ea.

RISER TENSIONERSRated 8 x 126 kips ea.Stroke 50 ft.

MUD PUMPSCameron W2214 x 2Rated Pump Speed 110 spm

Changeable Liner Size 5” to 7.5”Pressure Rating 7,500 psi

IRON ROUGHNECKMakeup Torque 100k ft-lbBreakout 150kt ft-lbTorque Pipe Size Range 3.5” – 10”

TOP DRIVETESCO 500 ESI 1000Hoisting 1,000 kipsPower Rating 1,000 HpMax Drilling Speed 220 rpmMax Drilling Torque 52k ft-lb

CONTROL SYSTEM (IRS / CLIENT)Working Pressure 5,000 psiTest Pressure 10,000 psiFluid (IRS) Pelagic 100 HFluid (client) various

EMERGENCY DISCONNECTStress jointHigh angle release connectorRetainer valveFlushing valvesROV panels

COILED TUBING RAMSShear / Seal valve

CT slip’s

CONTROL SYSTEM FEATURESFull redundant MUX

Backup System

Client system (Separate HPU)

Chemical injection system

Optional Lubricator valve

Optional Coil Tubing BOP

INTERVENTION RISER SYSTEM (IRS)

Internal Diameter 7 3/8” NomWorking Pressure 10,000 psi

Service Sour (H2s)Sweet (C02)

Temp Class ISO 10423 class UPSL Level PSL 3GDesign Temp -18ºC to +121ºCAnnulus ID 2” NomAnnulus Hose Length 800 m

LOWER RISER PACKAGEDual Shear seal valvesFlushing valvesSafety Head

Helix Energy Solutions Headquarters3505 W. Sam Houston Parkway North, Suite 400Houston, Texas 77043 USA

Office 281.618.0400

Helix Well Ops (USA)3505 W. Sam Houston Parkway North, Suite 400Houston, Texas 77043 USA

Office 281.618.0400

Helix Well Ops (UK)Alba Gate AberdeenStoneywood Park, Stoneywood RoadDyce Aberdeen AB21 7DZ UK

Office +44(0)1224.351800www.HelixESG.com 2017 Helix Energy Solutions Group

October 2017