You must log in to edit PetroWiki. Help with editing

Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. More information


Design for decommissioning: Difference between revisions

PetroWiki
Jump to navigation Jump to search
No edit summary
mNo edit summary
 
(23 intermediate revisions by 2 users not shown)
Line 1: Line 1:
Draft Index for review by the Joint Industry project.  The final page will be completed soon with many additions
The final page will be completed soon with the addition of guidance on design for decommissioning of topsides, jackets and FPSOs


==1 Statement of objectives==
== Statement of objectives ==


The D4D Database provides feedback from late life and abandonment operations.  It provides practical guidance to engineers when designing new facilities or modifying existing facilities
The D4D Database provides feedback from late life and abandonment operations.  It provides practical guidance to engineers when designing new facilities or modifying existing facilities
Line 7: Line 7:
The challenges and issues encountered at the end of a facility's life may not be foreseen or correctly considered during the design phase. This lack of attention can make the eventual decommissioning work more technically challenging and costly.  The purpose of the database is to identify decommissioning issues based on real industry lessons learnt and translate these into potential solutions which could be implemented in future designs
The challenges and issues encountered at the end of a facility's life may not be foreseen or correctly considered during the design phase. This lack of attention can make the eventual decommissioning work more technically challenging and costly.  The purpose of the database is to identify decommissioning issues based on real industry lessons learnt and translate these into potential solutions which could be implemented in future designs


== 2 History of JIP==
== History of JIP ==


Work group: formed in Aug 2016 with thirteen organisations
Work group: formed in Aug 2016 with thirteen organisations.  By Febuary 2018 another  fourteen organisations had joined.  Work group has twenty seven active participants providing lessons learnt and mitigation solutions 


Initial project scope: boundaries identified – i.e. subsea only
Initial project scope: boundaries identified – i.e. subsea only


<span style="background-color: rgb(255, 0, 0);">Insert picture of slide 2</span> [[File:Slide2 Pipelines.JPG|thumb|Uploaded using the UploadWizard tool]]
[[File:Slide2 Pipelines.JPG|Scope of Design Guidance]]


Demonstrated economic value: examined the influence of decommissioning costs in the whole asset lifecycle
Demonstrated economic value: examined the influence of decommissioning costs in the whole asset lifecycle
Line 25: Line 25:
Industry guidelines: started preparation to integrate findings and recommendations into the conceptual and FEED phases of the lifecycle
Industry guidelines: started preparation to integrate findings and recommendations into the conceptual and FEED phases of the lifecycle


==3 Decommissioning cost matrix==
== Decommissioning cost matrix ==


The guidance note maps the decommissioning requirements back to the infrastructure components in a series of design considerations.
The guidance note maps the decommissioning requirements back to the infrastructure components in a series of design considerations.
Line 31: Line 31:
It will provide a framework to incorporate decommissioning requirements into the design process and include a set of templates and checklists
It will provide a framework to incorporate decommissioning requirements into the design process and include a set of templates and checklists


The relative cost of decommissioning each component of a subsea development has been assessed and is listed on the table.&nbsp; &nbsp;
The relative cost of decommissioning each component of a subsea development has been assessed and is listed on the table.


<span style="background-color: rgb(255, 0, 0);">Insert Slide 12</span> [[File:Slide12 Subsea Components.jpg|thumb|Uploaded using the UploadWizard tool]]
[[File:Slide12 Subsea Components.jpg|Relative cost for decommissioning]]


A series of activitiies are needed to decommission and remove each component.&nbsp; These activities have been listed in the table.&nbsp; The activities are taken from the list of decommissioning activities published in the Oil and Gas UK guidelines.&nbsp; &nbsp;The cost of an activity to decommission a component of the subsea development has been assessed as being
A series of activitiies are needed to decommission and remove each component.&nbsp; These activities have been listed in the table.&nbsp; The activities are taken from the list of decommissioning activities published in the Oil and Gas UK guidelines.&nbsp; &nbsp;The cost of an activity to decommission a component of the subsea development has been assessed as being
Line 43: Line 43:
Decommissioning activites that are not applicable to a component have been left blank
Decommissioning activites that are not applicable to a component have been left blank


==4 When to incorporate decommissioning in design==
== When to incorporate decommissioning in design ==


<span style="background-color: rgb(255, 0, 0);">Insert slide 11</span>
[[File:Slide11 Goals.jpg|Project stages]]
 
[[File:Slide11 Goals.jpg|thumb|Uploaded using the UploadWizard tool]]


Decommissioning shuold be incorporated in the design during the Define or&nbsp;FEED stage&nbsp;of the project.&nbsp; This is the stage of a project where the major design criteria are written in to the Basis of design and design specifications.&nbsp; After this stage the project&nbsp; team has moved to the Execute stage&nbsp;&nbsp;and Change control is rigoursly&nbsp;enforced.&nbsp; Modifications to the design to assist or ease decommissioning will not meet the criteria for the change control committee.&nbsp;
Decommissioning shuold be incorporated in the design during the Define or&nbsp;FEED stage&nbsp;of the project.&nbsp; This is the stage of a project where the major design criteria are written in to the Basis of design and design specifications.&nbsp; After this stage the project&nbsp; team has moved to the Execute stage&nbsp;&nbsp;and Change control is rigoursly&nbsp;enforced.&nbsp; Modifications to the design to assist or ease decommissioning will not meet the criteria for the change control committee.&nbsp;
Line 53: Line 51:
Before the Define or FEED stage the project team will be studying several options to select the best solution to develop the field.&nbsp; There is not enough definition of the options to consider design&nbsp;for the final&nbsp;decommissioning.&nbsp; The decommissioning specialist should provide an estimated cost of decommissioning and remvoing each option for the project cost estimates and list the removal options and any issues for the regulators and other stakeholders.
Before the Define or FEED stage the project team will be studying several options to select the best solution to develop the field.&nbsp; There is not enough definition of the options to consider design&nbsp;for the final&nbsp;decommissioning.&nbsp; The decommissioning specialist should provide an estimated cost of decommissioning and remvoing each option for the project cost estimates and list the removal options and any issues for the regulators and other stakeholders.


== 5 Database of lessons learnt and design guidance ==
== Database of lessons learnt and design guidance ==


<span style="background-color: rgb(255, 0, 0);">Insert slides 4,5,6,7,8,9,10 here</span> This can be done two different ways as a gallery or individual images. I will do both and you remove the ones you want.
=== Rigid export pipelines ===


GALLERY
[[File:Slide4 Rigid Export Pipelines.JPG|Rigid Export Pipelines]]


<gallery>
=== Flexible risers ===
File:Slide4 Rigid Export Pipelines.JPG|caption
File:Slide5 Flexible Risers.JPG|caption
File:Slide6 Pipeline Bundles.JPG|caption
File:Slide7 Manifolds and Riser Bases.JPG|caption
File:Slide8 Wellheads.JPG|caption
File:Slide9 Umbilicals.JPG|caption
File:Slide10 Flexible Pipelines.JPG|caption
</gallery>


[[File:Slide5 Flexible Risers.JPG|Flexible Risers]]


=== Pipeline bundles ===


INDIVIDUALS
[[File:Slide6 Pipeline Bundles.JPG|Pipeline Bundles]]


[[File:Slide4 Rigid Export Pipelines.JPG|thumb|Uploaded using the UploadWizard tool]]
=== Manifold and riser bases ===


[[File:Slide5 Flexible Risers.JPG|thumb|Uploaded using the UploadWizard tool]]
[[File:Slide7 Manifolds and Riser Bases.JPG|Manifold and Riser Bases]]


[[File:Slide6 Pipeline Bundles.JPG|thumb|Uploaded using the UploadWizard tool]]
=== Wellheads ===


[[File:Slide7 Manifolds and Riser Bases.JPG|thumb|Uploaded using the UploadWizard tool]]
[[File:Slide8 Wellheads.JPG|Wellheads]]


[[File:Slide8 Wellheads.JPG|thumb|Uploaded using the UploadWizard tool]]
=== Umbilicals ===


[[File:Slide9 Umbilicals.JPG|thumb|Uploaded using the UploadWizard tool]]
[[File:Slide9 Umbilicals.JPG|Umbilicals]]


[[File:Slide10 Flexible Pipelines.JPG|thumb|Uploaded using the UploadWizard tool]]
=== Flexible pipelines ===


==6 Economic Benefits==
[[File:Slide10 Flexible Pipelines.JPG|Flexible Pipelines]]
 
== Economic Benefits ==


The cost of decommissioning can affect the project economics.&nbsp; Project economics use the Net Present Value calculation.&nbsp;&nbsp;This calculation needs the Capex, Opex, Decommissioning Cost or Abex, tax rebate and income from sales of oil and gas.&nbsp; Economic analysis has been completed for the Clyde project reported &nbsp;in the Offshore Europe conference in Aberdeen in 2017 (Design for Decommissioning)&nbsp;
The cost of decommissioning can affect the project economics.&nbsp; Project economics use the Net Present Value calculation.&nbsp;&nbsp;This calculation needs the Capex, Opex, Decommissioning Cost or Abex, tax rebate and income from sales of oil and gas.&nbsp; Economic analysis has been completed for the Clyde project reported &nbsp;in the Offshore Europe conference in Aberdeen in 2017 (Design for Decommissioning)&nbsp;


<span style="background-color: rgb(255, 0, 0);">Insert slide 14 here</span> [[File:Slide14 Economic Value.JPG|thumb|Uploaded using the UploadWizard tool]]


==7 Contacts==
 
Stuart.Martin@ardent.com, Caroline.Laurenson@xodus.com, Alan.Stokes@advisian.com
[[File:Slide14 Economic Value.JPG|Benefits of Design for Decommissioning]]
 
 
 
== Noteworthy Papers in OnePetro ==
 
Stokes, A. W. 2014. Decommissioning Costs Can Be Reduced. Offshore Technology Conference. [https://doi.org/10.4043/25247-MS https://doi.org/10.4043/25247-MS]
 
== External Links ==
 
Decom North Sea&nbsp;L2P2&nbsp;[http://decomnorthsea.com/l2p2&nbsp http://decomnorthsea.com/l2p2&nbsp];
 
== Contacts ==
 
[mailto:Stuart.Martin@ardent.com Stuart Martin] Stuart.Martin[AT]ardent.com
 
[mailto:Caroline.Laurenson@xodus.com Caroline Laurenson] Caroline.Laurenson[AT]xodus.com
 
[mailto:Alan.Stokes@advisian.com Alan Stokes] Alan.Stokes[AT]advisian.com
 
== Editing this page ==
 
[[Help:Editing_a_page|How to edit this page]]
 
[[Help:RichText_editor_-_Edit_toolbar|Using the Edit toolbar]]
 
[[Help:Contents|All Help Pages]]
 
== Categories ==
[[Category:4.10 Facilities decommissioning and site remediation|Category:4.10 Facilities decommissioning and site remediation]]

Latest revision as of 11:32, 29 March 2018

The final page will be completed soon with the addition of guidance on design for decommissioning of topsides, jackets and FPSOs

Statement of objectives

The D4D Database provides feedback from late life and abandonment operations.  It provides practical guidance to engineers when designing new facilities or modifying existing facilities

The challenges and issues encountered at the end of a facility's life may not be foreseen or correctly considered during the design phase. This lack of attention can make the eventual decommissioning work more technically challenging and costly.  The purpose of the database is to identify decommissioning issues based on real industry lessons learnt and translate these into potential solutions which could be implemented in future designs

History of JIP

Work group: formed in Aug 2016 with thirteen organisations.  By Febuary 2018 another  fourteen organisations had joined.  Work group has twenty seven active participants providing lessons learnt and mitigation solutions 

Initial project scope: boundaries identified – i.e. subsea only

Scope of Design Guidance

Demonstrated economic value: examined the influence of decommissioning costs in the whole asset lifecycle

Structure for database: defined for use by Lead Design Engineers

Database populated: input from decommissioning community as follows

• One on one interviews lasting about one hour with all members of the JIP gaining their experience in the UKCS, Africa, Norwegian and Australian waters. • Attendance at the decommissioning conferences o Decom North Sea, o Oil and Gas UK, o Norwegian Petroleum Forum, o SE Asia Kuala Lumpur, o SPE workshop Kuala Lumpur o Decom World Houston o Decom World Aberdeen • Review of the Lessons learnt of BP when doing decommissioning projects in the North Sea over the last five years • Reading the technical press (Offshore Engineer and SPE journal during the last two years)

Industry guidelines: started preparation to integrate findings and recommendations into the conceptual and FEED phases of the lifecycle

Decommissioning cost matrix

The guidance note maps the decommissioning requirements back to the infrastructure components in a series of design considerations.

It will provide a framework to incorporate decommissioning requirements into the design process and include a set of templates and checklists

The relative cost of decommissioning each component of a subsea development has been assessed and is listed on the table.

Relative cost for decommissioning

A series of activitiies are needed to decommission and remove each component.  These activities have been listed in the table.  The activities are taken from the list of decommissioning activities published in the Oil and Gas UK guidelines.   The cost of an activity to decommission a component of the subsea development has been assessed as being

  • High (coloured red),
  • Medium (coloured yellow)
  • Low (coloured blue)

Decommissioning activites that are not applicable to a component have been left blank

When to incorporate decommissioning in design

Project stages

Decommissioning shuold be incorporated in the design during the Define or FEED stage of the project.  This is the stage of a project where the major design criteria are written in to the Basis of design and design specifications.  After this stage the project  team has moved to the Execute stage  and Change control is rigoursly enforced.  Modifications to the design to assist or ease decommissioning will not meet the criteria for the change control committee. 

Before the Define or FEED stage the project team will be studying several options to select the best solution to develop the field.  There is not enough definition of the options to consider design for the final decommissioning.  The decommissioning specialist should provide an estimated cost of decommissioning and remvoing each option for the project cost estimates and list the removal options and any issues for the regulators and other stakeholders.

Database of lessons learnt and design guidance

Rigid export pipelines

Rigid Export Pipelines

Flexible risers

Flexible Risers

Pipeline bundles

Pipeline Bundles

Manifold and riser bases

Manifold and Riser Bases

Wellheads

Wellheads

Umbilicals

Umbilicals

Flexible pipelines

Flexible Pipelines

Economic Benefits

The cost of decommissioning can affect the project economics.  Project economics use the Net Present Value calculation.  This calculation needs the Capex, Opex, Decommissioning Cost or Abex, tax rebate and income from sales of oil and gas.  Economic analysis has been completed for the Clyde project reported  in the Offshore Europe conference in Aberdeen in 2017 (Design for Decommissioning) 


Benefits of Design for Decommissioning


Noteworthy Papers in OnePetro

Stokes, A. W. 2014. Decommissioning Costs Can Be Reduced. Offshore Technology Conference. https://doi.org/10.4043/25247-MS

External Links

Decom North Sea L2P2 http://decomnorthsea.com/l2p2&nbsp;

Contacts

Stuart Martin Stuart.Martin[AT]ardent.com

Caroline Laurenson Caroline.Laurenson[AT]xodus.com

Alan Stokes Alan.Stokes[AT]advisian.com

Editing this page

How to edit this page

Using the Edit toolbar

All Help Pages

Categories