Decommissioning and P&A in the Future

UK Decomm Trade Mission June 2017

ConocoPhillips’ P&A Story

2

CoP Norway Future Decomm Scope

P&A +/- 100 wells

Remove 4-5 major facilities

Next +/-10 years

P&A > 300 wells

Remove 19 major facilities

TotalRemaining

Scope

ConocoPhillips Norway Interests in the North Sea

2014 – 2016 P&A Programs (Total 38 wells)

3

Ekofisk Alpha:• 23 Wells – Completed

• Rowan Gorilla VI

Eldfisk Bravo:• 6 Wells

• Platform Rig

Ekofisk Kilo: • 3 Wells

• Platform Rig

Eldfisk Alpha:• 2 Wells

• Maersk Gallant

Ekofisk Bravo:• 4 Wells

• Rowan Norway

Eldfisk 2/7 B – P&A 6 wells

Platform Rig - 2016

Greater Ekofisk Well Plug & Abandonment Scope

Tor – P&A 12 wellsEkofisk 2/4 B – P&A 22 wells

2 wells 2016 (completed)

Future 20 wells

Ekofisk 2/4 A – P&A 23 Wells

23 wells – Completed 2016

Ekofisk 2/4 C – P&A 23 wells

Eldfisk 2/7 A – P&A 27 wells

Eldfisk 2/7 B – P&A 19 wells

Platform Rig - 3 wells 2016 (completed)

Future 16 wells

4

Medium Term P&A +/- 100 wells

Structural Integrity Driven

Short Term P&A

Well Integrity Driven

Long Term P&A > 220 wells

Economic Life Driven

Multiple Potential Solutions and Providers

Revolutionary

P&A

Technology

Regain Wellbore

Access

Remove Steel

Clean Out

Establish Barrier

Verify Barrier

Monitoring

Spex

Foro

Interwell

GA Drilling

BiSN

Nammo

Sintef

DNV GL

ANT

DrillWell

Heat melting

Erosion

Corrosion

Explosion pressure

Advanced Pugging Materials

Formation Barriers

Multi-string bond logging

Remote monitoring

Key to Success – Collaboration!

• Pan North Sea

• Regional Organizations

• UK Oil and Gas

• Norwegian Oil and Gas Association

• Industry JIP’s

• Bi-Lateral / Tri-Lateral

Operator Collaboration

…. etc.

Through Tubing Solutions

…. etc.

5

Tor

Greater Ekofisk Area Facility Removal History / Plans

Albuskjell

West Ekofisk

Edda

Embla

Eldfisk Complex

H 7

36/22 A

37/4 A

B 11

Tor

Ekofisk Complex

Eldfisk 2/7 B

Removed 2006-2014

Planned removal 2017-2020

Future removal, 3rd party

Removed, 3rd party

2/4 A

Cod

2/4 B - K

Cat 1 - Removal of Bridges, Flares and Tripods

7

Awarded 2005 to Heerema (main contractor)

AF Decom (subcontractor onshore disposal)

Method: Reverse installation

Total weight: approximately 11,000 ton

Scope:▪ 9 bridges

▪ 5 flares

▪ 8 tripods

▪ 2 modules

Completed 2010

Norpipe 37/4A2010

Norpipe 36/22A2010

EKOFISK 2/4R2010

EKOFISK 2/4P2010

EKOFISK 2/4Q (Modules)2014

WEST EKOFISK 2/4D2012

ALBUSKJELL 1/6A2013

Cat 2 - Removal of Topsides and Jackets

Awarded 2008 to Heerema (main contractor)

AF Decom (subcontractor make safe / preparation / onshore disposal)

Method: Reverse installation

In addition 2/4W was removed in 2011 (topside&jacket)

Total weight: 120 000 tons

ALBUSKJELL 2/4F2011

EDDA 2/7C2012

COD 7/11A2013

Scope ▪ 9 Topsides

▪ 9 Jackets

▪ 2 Quarters Modules

Completed 2014

This includes

• Engineering

• Offshore preparation

• Cleaning of equipment as required

• Relocate drill-cuttings

• Removal of topsides and jackets

• Design/install temporary nav. aids

• Cut Piles below natural seabed

• Handling of inhibited water in pipeline

• Cut risers / pipeline connection

• Remove/gravel dump exposed parts of pipeline

• Seabed clean up

• Onshore disposal

• Investment recovery

The platform facilities are to be removed, transported to a disposal site and all items disposed of.

Cat 3 - Next Phase of Facility Removal

2/4 HLast Sleep

Summer 2014

2/4 FTPCold Mode June 2014

2/4 Q LQ Removal

July 2014

2/4 ACoP September 2013

P&A 2014–2016+

Tor 2/4 EOption

P&A 2016+Removal 2020+