amund-toftum-cost savings through innovative approach
Post on 14-Apr-2018
217 Views
Preview:
TRANSCRIPT
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
1/15
Cost savings through
innovative approach
Presented by: Amund Tftum
8th Annual North Sea Decommissioning Conference
Aberdeen, November 2011
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
2/15
Agenda
Lessons learned
Piece Medium approach
Opportunities for cost savings
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
3/15
Onshore equipmentoffshore
Decommissioning logistics
All waste segregated and
transported in purpose built
containers
Piece Small offshoretechnics developed
Lessons learned 2/4 Ekofisk Tank
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
4/15
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
5/15
Well P&A and Removal in paralell Piece Small & Preparations for lifts with HLV
Work from jack up rig
Lessons learned Indefield
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
6/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
7/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
8/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
9/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
10/15
Cost cutting opportunities
Utilize living quarters
Combine work
Contracting strategy
Bundling
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
11/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
12/15
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
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
13/15
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?)
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
14/15
Cost cutting opportunities
Utilize living quarters
Combine work
Contracting strategy
Bundling
THINK DECOMMISSIONING !
-
7/27/2019 Amund-Toftum-Cost Savings Through Innovative Approach
15/15
Thank you for your attention
AF Decom Offshore
top related