HELIX 534 WELL INTERVENTION VESSEL

HELIX 534 WELL INTERVENTION VESSEL

Main Characteristics

Vessel Name Helix 534

OwnerHelix Energy Solutions

Group, Inc.

DesignSonat Offshore

Discoverer Class DP

Flag Panama

Accommodations 150 persons

HelideckSikorsky S-61 or

equivalent

Dimensions

Length Overall555 ft (including

bow helideck)

Beam 88 ft 6 in

Depth 32 ft

Operating Draft 25.75 ft

Class

ABS Class A1, Drilling Unit, AMS, DPS-2 SOLAS 1974, USCG

Moon Pool

Dimensions26 ft 10 in x 18 ft

unobstructed opening

Rotary Table Make / Type

National, C- 495

Maximum Opening 491⁄2 in

Static Rated Capacity 650 Te

False Rotary Static Rated Capacity

400 Te

Capabilities

Riser-based or riserless through-tubing well intervention

Surface top hole drilling and casing installation

Subsea and surface equipment installation / recovery

Well testing and production flow-back services

Slickline / electric line / coiled tubing service deployment

Cementing, pumping, well stimulation

Riser based or riserless well and field decommissioning

Casing cutting and wellhead recovery

Tree recovery and replacement

Emergency well control support

The Helix 534 is a DP 2 Drill Ship MODU modified for well intervention in water depths to 10,000 ft. This multipurpose vessel provides a stable platform for a wide variety of tasks, including well intervention, field and well decommissioning, installation and recovery of subsea trees/wellheads, well testing and emergency response. The vessel features a well intervention deck, supporting coiled tubing, cement unit, and returns separation unit. A deep lowering winch allows offline activity for initial startup/recovery of tooling. The Helix 534 also features a 26 ft x 10 ft x 18 ft unobstructed moon pool with 3 x 80 ton skidding systems, a 200 ton skid with tubular slips, a 73⁄8" intervention riser system, the ability to rack back 10,000 ft of drill pipe/riser, a well test deck, and an overall deck capacity more than 8,000 tons.

HELIX 534

WELL INTERVENTION

VESSEL

Propulsion and Power

Thrusters Fixed Pitch / Azimuthing

6 x Bird-Johnson thrusters (2,500 hp each)

Main Engines 6 x EMD MD-20-645E9 diesels driving 6 x 2,500

kW generator1 x EMD MD-12-645E8,

1,150 kW

Emergency Power

1 Caterpillar 3304, 90 kW

Dynamic Positioning

DP2-rated Kongsberg SDP, D32 and DP12

In-line Propulsion Yes

Shafts 2

Motors / Shaft 4

Total hp per Shaft 8,000 hp

Propeller Type Fixed

Capacities

Variable Deck Load 8,896 mT

Total Payload 9,270 mT

Liquid Mud 6,994 bbls

Bulk Mud 12,000 ft3

Bulk Cement 4,800 ft3

Sacks Stored 2,200 sacks

Drill Water 12,415 bbls

Potable Water 1,413 bbls

Base Oil 1,038 bbls

Fuel Oil 19,791 bbls

Top Drive

Make Varco TDS 4SL

Type (Electric / Hydraulic)

Electric GE 762 DC

Rated Capacity 650 Te

Test / Working psi 5,000 psi / 5,000 psi

Top Drive Makeup / Breakout

Make Varco pipe handler

Model PH - 85

Type Pipe handler

Maximum Breakout Torque that can be Applied by System

85,000 ft / lbs

Intervention Riser System

Product Bore 73⁄8 in ID

Annulus 2 in ID

Working Pressure 10,000 psi

Depth Rating 10,000 fsw

Well Barrier Type

1 x 73⁄8 in “fail close” hydraulic cutting gate valve (LCV)

2 x 73⁄8 in fail safe closed gate valves (UCV

and RTV)3 x annular 21⁄16 in

fail safe closed gate valves

Flowhead with swivel

IRS Control System

Subsea MUX control system

IRS MUX HPU5,000 psi mp / 10,000 psi hp

IRS MUX Control Van, Two (2) Remote Touch Screen Stations for Operating IRS / Flowhead Control System

2 IRS Hose Reels

10,000 fsw max supply / test

IRS MUX Cable Reel

10,000 fsw

Secondary Disconnect E-line Reeler

10,000 ft

Riser Clamps

As required for 65⁄8 in riser pipe, 23⁄8 in annulus and associated umbilical

control lines

Derrick and Substructure

Make / Type Pyramid / dynamic

Dimensions of Base 54 ft x 46 ft

Dimensions of Crown 18 ft x 18 ft

Gross Nominal Capacity

594 lt

Maximum Number of Lines

12

Drawworks

Make / Type National 1625-DE

Motors Make / Type GE 752 / DC motor

Drilling String Motion Compensator

Make / Type Varco Shaffer

Stroke 25 ft

Compensated Capacity

600,000 lbs

Locked Capacity

1,000,000 lbs (hydraulically locked)

1,500,000 lbs (mechanically locked)

Riser Tensioners 16 x 80 kips x 50 ft stroke wireline tensioner

www.HelixESG.com

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

Office 281.618.0400

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

Office 281.618.0400

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

Office +44(0)1224.351800

Cranage

Seatrax 72 Model 7882 65 t boom 80 ft stbd aft

Seatrax S9028 62 t boom 100 ft stbd fwd

Seatrax S9028 75 t 120 ft boom port aft

Seatrax S9028 75 t 100 ft boom port fwd

Remote Operated Vehicles

1 x Triton XLS 150 hp deck-launched ROV

1 x Triton XLS 125 hp deck-launched ROV

Mud Pumps

Quantity / Make / Model

3 National 12-P-160

Maximum Input 1,600 hp (1,193 kW)

Rated Pump Speed 120 spm

Maximum Fluid Cylinder Line Bore

71⁄4 in (184.2 mm)

Stroke 12 in (304.8 mm)

Hydrostatic Test Pressure of HP Piping

5,000 psi (352 / cm2)

Ratio of Gears 3,439

Suction Connection, ASA-150 lb R.J. Flange

10 in

Discharge Connection, Cross with API-5000 lb R.J. Flange

6 in

Iron Roughneck NOV AR3200

Make-up Torque100,000 ft / lb (135,580 Nm)

Break-out Torque120,000 ft / lb (162,700 Nm)

Drill Pipe Size Range 31⁄2 in to 93⁄4 in