breaking down the barriers between wells p&a and platform...
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© 2016 Aker Solutions
Breaking down the barriers between wells
P&A and platform decommissioning
St. Andrews | 16th November 2016
Ole Jakob Kverneland and Per Arild Boganes
© 2016 Aker Solutions
Challenges
Breaking down the barriers between wells P&A and platform decommissioning
The major activities are performed like a relay race Wells P&A
Shutdown and cleaning
Engineering down
Preparations for removal
Normally unattended installation (NUI)
Final preparations (heavy lift vessel)
Removal
Certain facilities require external accommodation solutions when platform systems are shut down
Sequential timeline
Slide 2
Year 2
10 11 12 9 8 7 6 5 4 3 2 1
Year 3
10 11 12 9 8 7 6 5 4 3 2 1
Year 4
10 11 12 9 8 7 6 5 4 3 2 1
Year 1
10 11 12 9 8 7 6 5 4
Offshore P&A Eng Down & Cold Phase Preps Normally Unattended Inst. (NUI) Final preps
Topsides Removal
Jacket Removal
© 2016 Aker Solutions
Challenges
One operation at a time
Breaking down the barriers between wells P&A and platform decommissioning Slide 3
© 2016 Aker Solutions
Objectives
Demonstrate that efficiency on total decommissioning scope can be improved by
integrating P&A work and platform decommissioning
Early completion of decommissioning work prior to cold phase ready for removal
Improve technology (P&A) and execution efficiency by using an integrated schedule,
eliminating interfaces and sharing resources
Reduce decommissioning costs significantly by SIMOPS (20 – 30%)
Breaking down the barriers between wells P&A and platform decommissioning Slide 4
© 2016 Aker Solutions
Aker Solutions decommissioning
Modifications for decommissioning
Deactivation
Prepare for removal Utilities
Hook down modules, MSF, bridges and flare
Install lifting points
Breaking down the barriers between wells P&A and platform decommissioning Slide 5
© 2016 Aker Solutions
Decommissioning project execution experience
Breaking down the barriers between wells P&A and platform decommissioning Slide 6
Phillips
Maureen A
EPRD
TOTAL
Frigg & MCP01
EPRD
1995-1997 1998-2002 2004-2010
CNRI
Murchison
DSC
BP
Old Valhall
DSC
2011-2016 2012-2016
TENAS/Repsol
Yme DSC
2013-2015 2015-2016
ExxonMobil
Jotun B
Rig Removal
Prep for P&A
Continuous business for 21 years
2008-2009
BP
DP Rig
Removal
2014-2016
Repsol
Varg; DSC
ConocoPhillips
Ekofisk tank
cleaning
Esso
Odin
EPRD
© 2016 Aker Solutions
Halliburton wells P&A
Traditional well service and surface decommissioning
provider Discrete services
Bundled services
Turnkey projects
Include drilling contractor Bundled services
Turnkey projects
Provide full decom services Extended co-operation with decom provider
Breaking down the barriers between wells P&A and platform decommissioning Slide 7
© 2016 Aker Solutions
Collaboration
Breaking down the barriers between wells P&A and platform decommissioning Slide 8
Statoil - Halliburton Veslefrikk FPA Project, Meeting 08.06.16
Engineering
Up Well P&A
Conductor
Removal
Decom &
Clean
Prep for
Removal
Platform
Removal
Onshore
Disposal Shutdown
1 2 3 4 5 6 7 8
Ma
in
C
on
tra
cto
r
Strate
gic
Pa
rtn
er
Aker Solutions Aker Solutions Aker Solutions Aker Solutions Aker Solutions Aker Solutions Aker Solutions Aker Solutions
Lifting
Contractor
© 2016 Aker Solutions
Success criteria
Focus on the total SOW Reduce total time for wells P&A, decommissioning and removal
Optimise the total decommissioning schedule rather than days per well
Alignment of goals All parties
Joint delivery model Accountability / ownership
Commercial alternatives Mutual benefit
Common environment Operations room
Performance drive Estimated time
Service quality
Service alignment
Breaking down the barriers between wells P&A and platform decommissioning Slide 9
© 2016 Aker Solutions
Organisation
Breaking down the barriers between wells P&A and platform decommissioning Slide 10
Operator
Operations dept.
drilling department
Operation services:
De-pressuring /
flush/purge
Isolations
Gen. deactivation
Logistics (cranes,
accommodation)
Drilling services:
Utility support
General P&A support
Aker Solutions
M&M
decom services
DSC / M&M services:
Engineering down
Modifications for cold
phase
Utility modifications
Temporary systems
Removal preps
P&A assistance:
Multiskilling EIT /
mech.
Halliburton
P&A
decom services
P&A services:
Fluids / cementing
Wireline / coiled
tubing
Cutting, pulling and
tools
Waste handling
MDR and surf. syst.
PPS services:
Flush, purge, clean
Pipeline / pigging
Removal Contractor
Removal
disposal
Removal services:
Final preparations
Grillage, seafastening
HLV lifting, transport
Marine oper. / barges
Disposal:
Onshore demolition
Disposal, recycling
Drilling Contractor
Rig
P&A services:
Drilling facilities
General services:
Rig crew
Accommodation
Utility supply
Crane handling
Step 1: Strategic alliance with P&A contractors, piloting
integration of well P&A (Halliburton) with topsides logistics Process
- Execution strategy
-Scope definition / split
-Interface management
-Overall planning and risks
-Resources
-Optimisation using LEAN
© 2016 Aker Solutions
Positive team interaction – is it a relay race?
Breaking down the barriers between wells P&A and platform decommissioning Slide 11
Typical timeline for P&A, EDC, mods and removal preps
Acti
vit
ies
on
DP
P&A – Bottom plugs P&A – Remaining plugs P&A – Conductor recovery
COP process Clean process ED process Remove process Well disconnect
Mods cold phase Mods/temp systems Final mods
ED well/ut Remove w/ut SD/clean we/ut ED/rem. key syst.
Prep. for MDR Remove MDR
Gen removal preps cold and hot work-after bottom plugs and declassification Gen remove preps-cold
Timeline on DP after cold phase (HLV in field)
Final rem. preps topside Lift and transport of topside Final rem. preps jacket Lift and transport of jacket
Onshore disposal topside Onshore disposal jacket
© 2016 Aker Solutions
Sequential timeline
Breaking down the barriers between wells P&A and platform decommissioning Slide 12
Year 2
10 11 12 9 8 7 6 5 4 3 2 1
Year 3
10 11 12 9 8 7 6 5 4 3 2 1
Year 4
10 9 8 7 6 5 4 3 2 1
Year 1
10 11 12 9 8 7 6
Offshore P&A Eng Down & Cold Phase Preps Normally Unattended Inst.
(NUI) Final preps
Topsides Removal
Jacket Removal
Offshore P&A
Removal Preparations
Eng Down & Cold Phase Preps
Normally Unattended Inst. (NUI)
Topsides Removal
Jacket Removal
Result from SIMOPS and collaboration
© 2016 Aker Solutions
Potential cost savings
Breaking down the barriers between wells P&A and platform decommissioning Slide 13
0
2,000,000,000
4,000,000,000
6,000,000,000
8,000,000,000
10,000,000,000
12,000,000,000
14,000,000,000
16,000,000,000
18,000,000,000
Current estimate Improved P&Atechnology and
reduced duration
Reduced vesseltime
Integrated planning Acceleratedschedule
New estimate
12. Monitoring
11. Site Remediation
9. Substructure Onshore Recycling
8. Topsides Onshore Recycling
7. Substructure Removal
6. Topsides Removal
5. Topsides Preparation
4. Facilities / Pipeline Making Safe
3. Wells Abandonment
2. Facility Running / Owner cost
1. Operator Project Management
- 22%
© 2016 Aker Solutions
Result from SIMOPS and collaboration
Breaking down the barriers between wells P&A and platform decommissioning Slide 14
© 2016 Aker Solutions
Conclusions
Aker Solutions to be the integrator - a new concept in
the market
Basis is to optimise the schedule Based on Halliburton P&A technology
SIMOPS
Common resources
Efficient utilisation of available accommodation
Potential reduction in duration / net costs of 20%
through efficient collaboration
Breaking down the barriers between wells P&A and platform decommissioning Slide 15
© 2016 Aker Solutions Breaking down the barriers between wells P&A and platform decommissioning Slide 16
© 2016 Aker Solutions
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