UK Decommissioning

Session 3 Batching & Campaigning

Oil & Gas UK Offshore Decommissioning Conference 2015

St Andrews

18th – 19th November 2015

HESS Operational Excellence

Subsea Field Campaign Management

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HESS Operational Excellence

What worked

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• 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

Multi Field Rig approach

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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

HESS Operational Excellence

Any Questions?

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