UK Decommissioning
Session 3 Batching & Campaigning
Oil & Gas UK Offshore Decommissioning Conference 2015
St Andrews
18th – 19th November 2015
HESS Operational Excellence
What worked
3
• Operator Cash flow management
• Multi year budget management
• Operator and Partner financial alignment
• Stakeholder engagement and regularly compliance
• Legacy contract utilization, continuous service
• Day rate and Lump sum
• Schedule flexibility
• Annual contract windows of opportunity
• In-house single integrated team
• Quick to learn, Opportunities' to mature
• …..Knowledge and understanding.
HESS Operational Excellence 4
Barriers
• Risk Management and where does it sit
• Change Management & Education
• Operator Standards, fit for purpose
• Estimate vs. Cost
• JV alignment
• Stakeholder engagement
• Market…new vs. old?
• Legacy multi functional team approach
• Project timeline
• Information and Data
HESS Operational Excellence 5
Subsea Decommissioning Project
• Supply Vessel – TEAM Marine contract
• Helicopters
• Light Well Intervention Vessel
• Multi Support Vessel (MSV) - Severance
• Dive Support Vessel (DSV)
• Construction Support Vessel (CSV)
• Combined DSV/CSV approach
• Heavy Lift Vessel (HLV)
• Rock Dump Vessel
• Remote Operated Vehicle Support
Vessel (ROVSV)
HESS Operational Excellence
LWIV Suspension, De-risking & Severance
• LWIV use was driven by legacy issue
of brittle bolts.
• Known limitations.
• Multiple visits required 2010-2014
• Multiple mobilisations.
• Valuable data gathered for later
intervention work.
• CT was tried.
• Winter slots due to availability (WOW)
• Reduce rig time variance- greater
certainty.
• DSV for disconnection & flushing?
LWIV Well Suspension Days
• Operator Share 82 hrs
• Campaign Operator Share Total 453 hrs
• Operator Performed Stand alone Total 363 hrs
HESS Operational Excellence
What makes it happen
• Service Partners (incl.Rig)
• Continuity & Repetition
• Alignment
• Technology
• Integration
• Information
• Work Flow
• Relationships
• Logistics & Supply Chain
• Sharing
• Continuous Improvement