amund-toftum-cost savings through innovative approach

7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach

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Cost savings through

innovative approach

Presented by: Amund Tftum

8th Annual North Sea Decommissioning Conference

Aberdeen, November 2011


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Agenda

Lessons learned

Piece Medium approach

Opportunities for cost savings


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Onshore equipmentoffshore

Decommissioning logistics

All waste segregated and

transported in purpose built

containers

Piece Small offshoretechnics developed

Lessons learned 2/4 Ekofisk Tank


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Well P&A and Removal in paralell Piece Small & Preparations for lifts with HLV

Work from jack up rig

Lessons learned Indefield


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Lessons learned EPRD Ekofisk

Make safe on older platforms

Offloading and site moves

Even RI requires piece small

Environmental aspects offshore

& onshore

Early involvement of disposalcontractor


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Lessons learned SR of Kittiwake Buoy

Special projects requirespecial solutions

Technical feasible to refloat

and bring GBS and loading

buoys to shore

Cleaning requirements and

final demolition decides if work

to be should be carried out

offshore or onshore


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From Piece Small to Piece Medium ?

Combining Piece Small with

Reversed Installation

Where applicable utilise existingfacilities

Utilising larger support vessels

Lifts from 5- 800 tons


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Removal of the H7 platform

EPRD Ekofisk 2/4 TEkofisk Platforms

Topside weight: 5700 mT

Jacket weight: 2600 mT

40% PS removal

Use Pacific Orca JU rig

Topside modules liftedonboard for processing

Jacket cut in sections

Disposal in Vats


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Cost cutting opportunities

Utilize living quarters

Combine work

Contracting strategy

Bundling


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Utilize the existing living quarters to

save time and costs:

Make safe of platforms

Front running/prepare for lifts

Remove X% of topside

Prepare/erect barriers

Opportunities Utilize living quarters


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One contractor responsible from A to Z

Engineering and Cleaning as required for chosen removal method

Removal starts immediately after cessation of production

Limited maintenance costs

No make safe of platform required

High focus on reuse of equipment

Platform information / documentation available from production organization

LQ, cranes and support systems available on platforms

One contractor engaged from cessation of production to reuse or disposal

Field

Developme

nt

Production

Wellplugging

and

abandonme

nt

(SC)

Cleaning ?

Maintenance

of

abandoned

platforms ?

Reversed

installation

Piece Small

Single lift

Disposal

Reuse

Hook Down

Lift &

Transport

Piece small

Close down

of production

Engineering ?

Opportunities - Contracting


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Opportunities Bundling of assets

Potential bundled campaigns: Removal/prep.work of topside while

using existing living quarters

Topside removals in parallel with WP&A

from Support Vessel

Preparing jackets for dedicated jacketremoval campaign

Synergies:

Less engineering

Economics of scale Optimization of removal methods

(or development of new?)

Lower cost on support rigs / vessels

(or development of new?)


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Cost cutting opportunities

Utilize living quarters

Combine work

Contracting strategy

Bundling

THINK DECOMMISSIONING !


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Thank you for your attention

AF Decom Offshore

amund-toftum-cost savings through innovative approach

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