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ELGIN: KEY FACTS & FIGURES
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Operated by Total for 8 x JV partners
Elgin PUQ (Production Utilities Quarters) & wellhead platforms linked by 90m bridge
High Temperature/High Pressure fields
On stream since 2001
Produces 135k boe/d
ELGIN G4: WELL ARCHITECTURE
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On Elgin ‘A’ (wellhead) platform
Seabed @ 93m below platform
Chalk HOD non-producing
low permeability high pressure
Fulmar producing
high permeability lower pressure
ELGIN G4 LEAK: DAY ONE (25 MARCH)
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12.20: gas & condensate leak confirmed at the wellhead on Elgin’s G4 well
13.30: evacuation begins of Elgin and the adjacent drilling rig
16.40: 219 people have been evacuated, leaving 19 still on the complex
01.45: Elgin OIM decides to fully abandon
Platform, rig & wells shut down
Export pipelines isolated
02.30: the last 19 people are evacuated
All 238 people safely and quickly evacuated
ELGIN G4 LEAK: INITIAL RESPONSE Informed all appropriate Authorities
Mobilised Emergency & Crisis Response Teams
Oil Pollution Emergency Plan (OPEP) activated
Enforced sea & air exclusion zones (2 & 3 N miles)
Mobilised a fleet of safety & support vessels – mainly Guard, FIFI & ROV vessels
Dispersant ships and planes put on standby
Mobilised well control specialist WWC to assist
Mobilised Oil Spill Response Limited (OSRL) and started frequent monitoring flights (2/day)
Mobilised Blow Out Task Force from Total HQ
Activities controlled sequentially by detailed risk assessment , many of which were reviewed by authorities
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The Ocean Ness Emergency Response & Rescue Vessel
Specialists WWC were mobilised early to assist
ELGIN G4 LEAK: INITIAL IMPACTS
Gas, condensate & mud released via D annulus
Condensate & mud fall to sea
Sheen covers a large area of sea surface
Waxy paraffinic deposits on wellhead platform
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ELGIN G4 LEAK: INITIAL IMPACTS
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27 March gas plume and
sheen visible, but not obvious
7 April surface sheen still
visible, but less than 1/10th micron thick
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Elgin G4 leak: environmental impacts
Widespread consensus that the environmental impacts are minimal
Environment Monitoring Activities 2 Oil Spill Response Limited (OSRL) flights per day to monitor marine pollution
Regular survey flights by the National Centre for Atmospheric Science (NCAS)
Daily water samples taken in Elgin surroundings
Regular ROV surveys of seabed around conductor pipe
Leak flow rate estimated at an initial 2kg/s but quickly fell to less than 0.6kg/s
Gas composition: 70% methane + 30% ethane, butane, etc; no H2S traces
Surface sheen extended many kms, but was less than 1/10th of a micron thick
Light condensate that disperses naturally and easily: 50% evaporation in the first 24 hours alone
Several independent chemical, sediment and & fish analyses confirmed no direct marine contamination (eg, Scottish Government, etc)
Presentation title - Place and Country - Date Month Day Year 13
SAFETY STATUS • Full POB (138) re-established on PUQ
• Normal ISSOW and risk assessment processes re-established
• Required SCEs now essentially operational on PUQ and on WHP
• Essential CAT A maintenance re-established by crew.
• 3 Senior Management Briefings have been made to offshore crew in recent weeks involving both TEPUK and Rowan.
• Surface exclusion zone still in place, but only to control abnormal access to area, otherwise normal operations resuming. Air exclusion zone gone.
• Preparation ongoing to install Elgin B jacket in late September by S7000 HLV.
• Ongoing involvement of HSE & DECC – they remain very supportive
Normal Operations Resuming
19 TEPUK Onshore Emergency Response, 30/05/2012, Aberdeen
TEPUK – EMERGENCY RESPONSE STRATEGY
On Scene or Operational
Site Emergency
Response
Organisation
Role: On-scene management of the incident
Location: Site
Tactical
Emergency
Response Team
(ERT)
Role: Provision & Coordination of support to the incident site
Location: Aberdeen
Strategic
Crisis
Management
Team
(CMT)
Role: Management of strategic issues arising from the incident site
Location: Aberdeen
Corporate / Group
Crisis
Management
Cell
(CMC)
Role: Provision of support to TEP UK; management of group level strategic issues
Location: Paris
20 TEPUK Onshore Emergency Response, 30/05/2012, Aberdeen
ONSHORE ERTS FIRST 24 HOURS
Incident Site
Emergency Response Room
Asset Engineer
ERT
Duty Manager
CMT
Board Room
WOEG (BG33)
CMT Leader
Duty Well Ops
CMT Liaison
HQ
WCM
Logistics
Safety
HR ENV Group
DECC
OSRL MCA
ARCC
NATS
Well control
Specialist Contractor
Corp. Coms.
Reception Centre
Team Coordinator
Relative Response Team
Contractor Liaison
Team Leader
ERSC
MODU Contractor
ERR
Media Response Room
MRT
Vessels
SOSREP
22 TEPUK Onshore Emergency Response, 30/05/2012, Aberdeen
Incident Management Team
Risk of Pollution?
Advise DECC/MCA
SOSREP Informed and kept
appraised.
Company taking acceptable action to minimise pollution?
SOSREP intervenes and gives direction. SOSREP happy and gives tacit approval of
response plan.
Continue with Plan & Monitoring
YES
YES NO
Twice daily aerial surveillance flights for sheen quantification – 115 flights will have been undertaken by the final sortie planned on 6th June
OSCAR Modelling from DGEP/HSE/ENV informs flight plans and alerts to neighbouring installations / transboundary lines if required.
OSIS modelling linked to aerial surveillance findings supports condensate release rate calculation and daily PON1 updates to DECC
Satellite imagery DGEP & OSRL
Protocol developed for daily sampling of sheen / waxy deposits from sea surface. Wax / mud samples taken from Elgin WHP.
Sample analyses undertaken by Intertek, FGO & CEDRE confirmed weathered condensate and with HOD condensate characteristics
Short, medium and long-term survey and Environmental Impact Assessment scope of work shared with DECC, Marine Scotland and Government Interest Group (GIG) Environment Group
23 TEPUK Onshore Emergency Response, 30/05/2012, Aberdeen
G4 ENVIRONMENTAL RESPONSE: MONITORING
G4 ENVIRONMENTAL RESPONSE: SPILL COMBAT READINESS Hercules and Nimbus aerial dispersant application system pack, plus air crew and OSRL personnel on standby at East Midlands Airport throughout incident (returned to normal service once well killed)
44m3 of dispersant strategically located at Inverness airport (airside)
FiFi vessels available to hose sheen if required
Other vessels available to prop-wash or use dispersant sprayers to spray water to speed up dispersion if required
2 containment & recovery systems in the field (reduced to one post-kill) with back-up system portside if required.
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