1. Subsea Light Well Intervention

2. Light Well Intervention
World wide there are more than 6000 SS wells, and the number is growing.
The recovery rate from SS wells is most often less than 40 % vs 50 – 60 %
on dry wells. Increased Oils Recovery from SS wells by use of Light Well
Intervention Vessels is extremely cost effective vs Semi Submersible Rigs.

3. Installation & Construction
Strong growth in subsea wells drives demand for subsea services from advanced and versatile offshore vessels
Development in global subsea wells
Global subsea wells by customer ( )
700
679
550
530
650
638
618
500
600
583
450
550
519
500
400
462
452
450
432
416
350
400
374
300
350
318
311
250
300
206
250
200
156
200
150
139
134
124
150
100 90
100 64 58 58 50 50
2013e2013e
2014e2014e
2015e2015e
2016e2016e
2017e2017e
PetrobrasPetrobras
StatoilStatoil BP
ShellShell
TotalTotal
ChevronChevron
AnadarkoAnadarko
ENIENI
Exxon MobilExxon MobilExxon Mobil
Premier OilPremier Oil
Exploration Drilling
Top hole drilling
Installation & Construction
Subsea & IMR
Production
IOR and IMR
De-commissioning
Plug & Abandonment
Source: Quest Offshore Resources Inc. (November 2013)

4. Ageing Subsea fields need well intervention and maintenance
Average age of producing subsea wells
Subsea wells producing for more than 5 years
5,000
NWECS1: years
+9%
4,500
4,000
3,500
3,000
2,500
North America: 8.9 years
2,000
1,500
West Africa: 6.1 years
1,000
South East Asia: 11.2 years
500
Brazil: years
2013e2013e
2014e2014e
2015e2015e
2016e2016e
Exploration Drilling
Top hole drilling
Installation & Construction
Subsea & IMR
Production
IOR and IMR
De-commissioning
Plug & Abandonment
Source: Infield, 2014; Infield, 2013
1) Northwest Europe Continental Shelf

6. Background
FMC`s Subsea Lubricator used on Regalia in successful interventions
Island Frontier delivered in 2004
Alliance between Island Offshore, FMC and Aker established in 2004
2005
Performed Well Intervention on Chevron Stathspey project
Awarded the long term contact with Statoil (6+3 years)
Intervention on two Nexen UK Wells
2006 awarded the BP contract years for West of Shetland primarily, commencing May 2009

7. The Vessels Island Frontier Island Wellserver Island Performer
Island Constructor
Island Performer

8. Wireline Services Most common RLWI services Well integrity
Caliper logging of wells
Data collection (oil, water, gas)
Mechanical repairs (e.g. DHSV replacement)
Water shut off (plug setting)
Zonal isolation (plug or straddle)
Perforation - Re-perforation 8 8

9. Wireline Services Most common RLWI services
Mechanical scale removal (milling)
Mechanical hydrate removal (milling)
X-mas tree interventions
Tubing cutting –explosive or mechanical cutting
Sand or debris removal
Honing and refurbishing of seal areas
Manipulation of sleeves and side pocket mandrels 9 9

10. Challenging work Vigdis C-5 Well Installation of Straddle to
Isolate a non producing
zone
280 m water depth
Straddle length 53 m
Well bore length 3850 m
Depth at end of well 2250 m
Horizontal climb 117 deg.
Duration of job 45 days

11. Track Record More than 270 Light Well Interventions since 2005
More than 95 % of the jobs were
successful
Jobs lasting 10 – 45 days
Increased revenues for clients – billions

12. Main focus from Authorities (PSA & NMD)
To maintain barriers in every form
Pressure control
Technical barriers
Human barriers
System barriers
Security
Integrity

13. Division of Responsibility
Client takes over responsibility when the tool-string enters the well
IO resumes responsibility when the tool-string leaves the well
Client is responsible for all cost related to damage to the well
Client is responsible for all cost related to blow-outs or similar accidents
All except for gross misconduct

14. People The LWI-segment employs more than 400 people in Island Offshore
All recruited internally
Operating as vessels
Focus on cross-training and multi-skilling
Retention rate 95 %
High level of competence
First class safety records
Shore staff with engineering support

15. The future

16. Thank You for your attention!