Changing the way you succeed.

Well Ops

Gulf of Mexico Services Overview

Changing the way you succeed.

Formerly Cal Dive International Incorporated

In 2006 the diving and shelf construction services were incorporated

separately under the name Cal Dive International Inc.

Deepwater service and E&P assets structured as follows:

Helix Energy Solutions Group (HLX)

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Helix ESG Locations

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Houston, Texas

Corpus Christi, Texas

Aberdeen

Rotterdam

Singapore

Perth

Changing the way you succeed.

MODU DP3 Q4000

MSV DP3 Well Enhancer

Well operation and decommissioning services are provided with the Seawell riserless well intervention

vessel, the flagship Q4000 semisubmersible, the Well Enhancer wireline / slickline / coiled tubing

intervention vessel, and the Normand Clough (JV) with our Subsea Intervention Lubricator and Vessel

Deployment systems.

MSV DP2 Normand CloughMSV DP2 Seawell

Well Intervention Assets

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357,240

404,901

506,163

391,674

332,184 321,748

130,000

1.12

0.49

1.58

0.00 0.00

1.86

0.65

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

2004 2005 2006 2007 2008 2009 2010

0

100,000

200,000

300,000

400,000

500,000

600,000

Manhours TRIRLast LTI – May 5, 2010

Q4000 OSHA TRIR Statistics

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• Developed and built the industry’s first purpose built semi sub

well intervention vessel, Q4000, in 2001

• First subsea wireline perforating

• Combined vessel, Subsea equipment, WROV & Diving

(as appropriate)

• Expertise in riserless and riser based intervention

• Construction and deconstruction capability

• Specialized, highly experienced crew and management

• Successful introduction of prototype equipment

• Co operative service and contractual approach within the

industry

Well Ops Intervention Services Summary

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Well History Gulf of Mexico

• 104 Projects undertaken and

completed

• 64 Fields

• 68 well abandonments

• 8 tree installations

• 28 downhole interventions

• Well intervention recompletion

operations undertaken in 5400

feet water

• 162 days active operations on

BP’s Deepwater Horizon Spill

Response

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Full range of Coil Tubing Services

Full Range of Electric Line Applications & Services

Full Range of Slick Line Applications & Services

Well clean up

Well Abandonment

Casing cutting, wellhead and tubing recovery

Wellbore initiation, surface casing installation

Suction Pile Installation

Dredging and subsea hammering

Tree, Jumper, manifold installationand general construction services

Flowline clearance and temporary abandonment

Q4000 Service Capabilities

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Q4000 Operational Advantage

• Self propelled average 6 nm/hr

• ABS class DP 3 system

• Open Deck for Rapid mob/demob

• Accommodations for 133 personnel

• Specialized engineering and crew

• 2 WROVs capable to 10,000 ft

• MPT Equivalent to Standard Derrick –

Active/Passive compensation system

• Horizontal pipe handling system, with Knuckle

Boom Crane and Iron Roughneck

• Top Drive

• 360 ton crane 110 ton to 10,000 ft

• 160 ton work crane

• 7-3/8” x 10,000 psi intervention system

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Main Pipe Rack Area Cement Unit 360 t CraneCatwalk Machine

Kill & Choke

Manifold

Poor Boy

Degasser

Q4000 Aft Deck – Intervention Lay Out

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Cement

Module

Pump

Module

Mud Treatment

Module360 Crane 160 Crane

Coil Tbg.

Reel

Q4000 Port Side – Intervention Lay Out

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HelideckVenom

WROV

Central Stores

Module

Venom

Control

Q4000 Starboard – Intervention Lay Out

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HelideckSupt Office Bulk Module160 Crane

Top Drive

Q4000 Forward Deck – Intervention Lay Out

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Hook

CT Lift Frame

CT BOP,s

Flowhead

Riser

Injector

Head

Knuckle

Boom Crane

600 t Derrick360 whip

line

160 main

line

Intervention Riser Coiled Tubing Rig-Up

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Mud

Standpipe

Guide System

Top Drive

Set Back

Riser System

(LRP)

Tree R/Tool

Subsea Tree

Prod Tubing

Rig Floor

(open)

Riser System

(EDP)

Drillers

(doghouse)

Q4000 Subsea Tree Recovery w / Tubing

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Well Ops 7-3/8” Intervention Riser System

7 3/8” system internal diameter

Standard Riser 6 5/8” pipe (options

available)

10,000 psi rated

Dual barrier in Lower Riser Package (LRP)

Emergency Disconnect Package (EDP)

Retainer valve at EDP

Annulus hose or 2 3/8” tubing

Direct Hydraulic Controls

ROV Operable

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6 5/8” Hydril

563 Riser

2 3/8” PH6

Annulus

32 function

Control

Umbilical

Riser Configuration

IRS Deployment Subsea

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• Flowline plug and burial

• Seabed debris recovery

• Debris cap recovery and

reinstall

• Flowline clean out

• Jumper disconnect and

recovery

Concurrent Operation Capability

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Wire caught and recovered, operations continue

100% Completion of Intervention Workscopes

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Clients PLET complete with pipeline

being recovered via open moonpool door

Clients PLET on surface

being secured to closed

moonpool door

Blocked Pipeline Abandonment

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Recovering BP manifold Thunder Horse

Subsea Manifold Recovery

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Critical Responder to BP Macondo Spill

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Cofferdam Deployment

Installation of Subsea Infrastructure

Top Kill – 29,600 bbls. mud @ 80 BPM

Captured Oil And Gas for 31 days

Static Kill with Mud and Cement

BOP/LMRP recovery with Drill Pipe

500 tons- 60’ x 14’ x 17’

Changing the way you succeed. 23