BP plc · LSE:BP.
BP — Technical Presentation (February 2010)
34 slides from BP's technical presentation, Feb 16, 2010
Slide 1: North West Hutton Project Summary
North West Hutton Project Summary Eamon Sheehan NWH Project Lead Bergen, 16 February 2010
Slide 2: Content
Content • Introduction • 2008 Topsides • 2009 Jacket • 2011 Subsea 2
Slide 3: NW Hutton Platform
NW Hutton Platform Topsides 20,000 tonnes Jacket 18,000 tonnes 9,200 removed 9,000 left on seabed Water depth 144 metres Derogation – footings left in-situ 3
Slide 4: NW Hutton Location
NW Hutton Location Faroe Islands NW Hutton Field Owners Shetland Islands • Amoco (UK) Exp. Co 26%(Operator) - BP • Enterprise Oil (UK) Ltd 28% - Shell Orkney Islands • Mobil North Sea Ltd 20% - Exxon Bergen • CIECO E&P (UK) Ltd 26% Oslo Stavanger Aberdeen North Sea 4
Slide 5: NWH Project Schedule
NWH Project Schedule Activity 2002 2003 2004 2005 2006 2007 2008 2009 2010 Cessation of Production (COP) Regulatory Requirement Regulatory Requirement, Decommissioning Programme > 50 Studies to develop Approved 12 April 2006 Wells/Reservoir Isolation Topsides Make Safe Topsides Module Separation Pip
Slide 6: HMC Execution Schedule
HMC Execution Schedule • 2007 Surveys Topsides − Topsides hook down − Subsea and removal • 2008 Topsides − Hook-Down − Removal − Sub sea preparations Simultaneously − Disposal Subsea • 2009 Jacket inspections − Removal by ROV’s − Disposal 6
Slide 7: 2008 Topsides
2008 Topsides • Organisation • Scope • Schedule • HSE • Lessons 7
Slide 8: 2008 Contract Organisation
2008 Contract Organisation Prime Contractor Marine Warranty Structural Consultancy Engineering Subsea Subsea Cutting Onshore Disposal Services 8
Slide 9: SSCV Hermod
SSCV Hermod Built in 1976 at Mitsui Eng in Japan Main cranes: 4000st & 5000st Max POB: 336 Length: 154m Width: 86m Working draft: 28m Moorings: 12 mooring lines Hermod support: min 1 tug NW Hutton support: standby vessel 9
Slide 10: SSCV Hermod – deck layout
SSCV Hermod – deck layout Main deck Aft of vessel Aft deck 10
Slide 11: 2008 Offshore Organisation
2008 Offshore Organisation 11
Slide 12: 12
12
Slide 13: 2008 Topsides Reverse Installation
2008 Topsides Reverse Installation 13
Slide 14: 2008 Topsides Removal
2008 Topsides Removal 14
Slide 15: 2008 Caisson Removal
2008 Caisson Removal 15
Slide 16: 2008 Topsides Removal
2008 Topsides Removal • 21 modules and 7 caissons successfully removed and transported to Able (UK) facility at Teesside • 530,000 offshore hours worked • No DAFWCs, no HiPos, no environmental issues • 116 days campaign May-Aug (95 days + 21 days WOW) • 5 barge load-ins at Teesside • Onshore demolit
Slide 17: Topside Removal Learning
Topside Removal Learning • Success depends on thorough preparation. Pre-populating workpacks with first-stage task risk assessments were valuable • Ensure engagement of vessel management team before offshore work begins (understanding of scope/hazards, operations input to detailed engineering) • Rig
Slide 18: 2009 Jacket
2009 Jacket • Organisation • Scope • Subsea • Schedule • HSE • Lessons 18
Slide 19: 2009 Contract Organisation
2009 Contract Organisation Prime Contractor Marine Warranty Structural Consultancy ROV contractor Subsea Cutting Subsea Cutting Subsea Cutting Scaffolding Onshore Disposal 19
Slide 20: BP Project Organisation
BP Project Organisation OIM Site Controller Marine Rep Project Eng PMC (Materials) Subsea Eng (N) •Anchors •Contract •Waste Mgt •Tooling Assurance •Barges •MOC •Consignment/ASCO •Recording process •Vessel Movement •Progress •MOC Marine Warranty Surveyor •Lift Certifying •Sea Fastening Cultural Attac
Slide 21: Jacket Removal Scope
Jacket Removal Scope • Frits Jan Koppert HMC Presentation 21
Slide 22: Statistics – Tooling & ROVs
Statistics – Tooling & ROVs Total days on site: 94 No Acces, 699, 15% Non Productive, 837, 19% Productive, 2976, 66% Productive: Operational can be standby or working Non productive: Maintenance or repairs No access: WoW, WoC or restricted due to barge alongside 22
Slide 23: 2009 NWH Hermod Campaign
2009 NWH Hermod Campaign Campaign • 100 day programme 8th April – 17th July • 86 days working 14 days waiting on weather • 58 Lifts to remove 9200 tonnes of NWH Jacket • Largest Lift 2250t to remove Jacket Section 1. • 224 Subsea Cuts in Total - 105 using Prime shear - 58 using CUT diamond wire cutt
Slide 24: Offshore Plan Vs Schedule
Offshore Plan Vs Schedule Activity Work Planned Work Actual Planned total Actual total Duration WoW running Duration wow Excl. wow incl. duration duration Overun wow total Overrun wow 29/03 Start 08/04 Start incl excl. Mob 08-Apr 15-Apr 10 7 -3 0 -3 MSF removal 14-Apr 26-Apr 16 18 2 1 1 Section 1 19
Slide 25: Jacket Removal Learning
Jacket Removal Learning • Challenge scope of work early, jacket cut height reduction & transfer of densitometer scope resulted in significant savings in crane vessel time • Define an extensive/flexible early cutting plan to ensure non critical cuts can be completed early in work programme • Ensure s
Slide 26: Subsea Jacket Learning
Subsea Jacket Learning • A dedicated strategy and plan is required for selection and training of sufficient number of top class pilots & support technicians for a successful sustained subsea decom programme • Heavy duty ROV’s have sufficient thrust to damage manipulators & tooling this needs to be a
Slide 27: 2009 As-Left Footings
2009 As- Left Footings [EUT=FF EL =e] [EUT-OFF EL ~38503] [EUT-OFF EL -38507] =a] ) (CoT=SF L=7a] sce Ae 27
Slide 28: Able Teesside 20th July 2009
Able Teesside 20th July 2009 28
Slide 29: Able Dismantling
Able Dismantling 29
Slide 30: The Crew
The Crew 30
Slide 31: Platform Removal Summary
Platform Removal Summary • All topside & jacket materials are onshore for demolition & recycling • NW Hutton learnings are being intergrated into preparing Miller for removal • Global decommissioning guidelines under development • Great achievement, successful campaign with no DAFWC’s, or HiPos 31
Slide 32: Subsea Scope 2011
bp @ SHELL CORMORANT ALPHATIEINS @® TVPICALTRENCHING & BACKFILL )) NW HUTTON JACKET BASE ‘Umbilical J Tube es Spoolzioco with _-—‘Matiressed Drill Cuttings / SmmWrepand __SSWV Umbifica— Md Mound 45mm Concrete 3 © Umbical Bust Desh -ors 20 OILEXPORT 40) (UNTRENCHED)
Slide 33: SSIV & Umbilical
10" Riser ——————-e 20” Riser ————-e «—— Umbilical J-Tube 20° Oil Export Spoolpiece with Mattressed Drill. Cuttings / = 5mm Wrap and SSIV Umbilical Mud Mound 45mm Concrete f 410" Gas
Slide 34: Welgas and Ninian Tee
Welgas and Ninian Tee © NW HUTTON FORMERTIE-INTO WELGAS TEE & NINIAN / NW HUTTON CROSSOVER 16" Western Leg Gas Pipeline 16" Western Leg Gas Pipeline Taperweight Bridges 6" Flexible Pipeline (Mattress 5 NINIANTEE : Pipeline Crossing Plan oe aad Disquised Welgas Too Pipeline & Tiesin Spools Racklumy i