Introduction to Offshore Oil and Gas Decommissioning

This ECITB-approved course builds a broad, practical understanding of offshore oil and gas decommissioning, helping businesses improve efficiency while supporting safer and more responsible project outcomes.

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Course Curriculum

23 Chapters · 252 Lessons

    1. Welcome page Free preview
    2. (Included in full purchase)

      Information page

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      Reference Download Instructions

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      Learner Registration and ID Submission

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      1. Start here: Your ECITB Course Joining Instructions

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      2. Complete Joining Instructions Form and ID Submission

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      Introduction Slide A

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      Chapter Guidance

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      What is Decommissioning

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      Infrastructure Familiarisation

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      A2. Infrastructure Familiarisation: Wells

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      A3. Clarifications and Subsea Tiebacks

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      A4 UK Offshore Infrastructure Locations

    8. A4a UK Offshore Infrastructure Locations - Reference Graphic Free preview
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      A5a. Subsea Infrastructure Familiarisation Graphic

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      A5. Subsea Infrastructure Familiarisation

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      B0 Chapter title page

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      B2 Assessing the economics and cease of production timing

    3. B3 Creation of a high level plan Free preview
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      B4. Data mining considerations

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      B5 Identify major decisions early

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      B6 Inform offshore teams

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      B7 Identify platform vulnerabilities

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      B8 Maintenance and upgrade strategy

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      B9 Execution phase begins

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      B10 COP

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      B11 Cessation of production planning with the regulator

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      B11 Well P&A planning

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      B12 Engineering down and clean

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      B13a Topside preparation terminology slide

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      B13 Topside preparation

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      B14 Topside removal

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      B15 Substructure removal

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      B16 Subsea infrastructure removal & site remediation

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      B17 Post decom monitoring

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      B18 Timescale overview

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      B19 Mindset changes

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      B20 Lessons learned - People and culture

    23. B21 Operational intensity Free preview
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      B22 Data mining supporting cost effective decommissioning

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      B23 - Cost saving example - Firewater pump & caisson upgrade

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      B24a Conductor removal terminology and conventional methodology

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      B24 - Cost saving technologies - conductor removal

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      B25 - Cost saving example - Power generation strategy

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      B26 Bundling wells

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      B27 - Cost saving example - Reduce crane requirements

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      B28 Conclusion

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      Chapter title

    2. U1. Regulatory landscape overview Free preview
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      U2. Hierarchy of legislation

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      U3. Key Regulatory framework: OGA Strategy

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      U4. OSPAR background and remit

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      U5 OSPAR background, members and key decisions

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      U6. Marine and Costal Access Act (MCAA) Marine (Scotland) Act.

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      Introduction slide - Decommissioning Work Breakdown Structure

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      D2. WBS Overview

    3. D3. WBS Walkthrough Free preview
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      D4. Cost Breakdown Overview

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      D5. Useful Resources

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      D6. OEUK Forums and Workgroups for Decommissioning

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      Introduction slide - OPRED and key regulations

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      E2. OPRED's role & responsibilities

    3. E3 Decommissioning programme Free preview
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      E4 Supporting documents

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      E5 How OPRED regulates decommissioning

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      E6 Derogation

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      E7 Working with OPRED

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      E8. Conclusion

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      E9. Petroleum Act 1998 decommissioning liability definition

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      E10. Reference documents: BEIS November 2018 Guidance Notes

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      E11 Managing fishing risks from decommissioned infrastructure

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      E12 Capturing the Energy: Preserving offshore oil and gas records

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      Information Slide - The Decommissioning Programme / Plan

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      F1a The Decommissioning programme process (5 Stages)

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      F2 Decommissioning programme introduction

    4. F3 Decommissioning programme contents Free preview
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      F4 Comparative assessment

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      F5 Environmental considerations

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      F6 Costs and schedule

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      F7 Rigs to reef

    9. F8 Decommissioning programme approval roadmap Free preview
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      F9 Conclusion

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      Information Slide - Contracting and Commercial Models

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      G2 Introduction to commercial models

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      G3. Commercial models - Positives and negatives

    4. G4 Case study - Asset ownership model Free preview
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      G5. Example: The BP approach

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      G6. Conclusion

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      Introduction slide - Cost model and financial security agreements

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      C1. Decommissioning Cost Model Introduction

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      C1a. Asset lifecycle cost model graphic - Reference

    4. C2 Financial security arrangements introduction Free preview
    5. C3. Financial security arrangements, estimation techniques and terminology Free preview
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      C3a Note: AFE clarification

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      C3b Note: AACE

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      C4. NSTA Cost reporting and stewardship survey

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      Information Slide - Subsurface and Well Plug and Abandonment

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      H2 Subsurface fundamentals

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      H3. Sustained flow potential

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      H4: Well construction overview

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      H5 Regulatory overview

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      H6. As low as reasonably practicable

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      H7. Subsurface considerations

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      H8. Subsurface basis of design

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      H9. Plugs and barriers

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      H10. Annular cement verification

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      H11. Verification process

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      H12 - Well engineering considerations

    13. H13 Stages of well abandonment Free preview
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      H14. Common challenges

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      H15. Well engineering & execution

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      H16. Working in silos

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      H17 - Through-tubing vs cased hole P&A

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      Introduction slide - Well P&A considerations for carbon capture and storage

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      I2. Introduction to carbon capture and storage (CCS)

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      I3. CO₂ Storage example

    4. I4. CO₂ Storage is becoming a global requirement Free preview
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      I5. Storage depth

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      I6. The Minimum Safe Abandonment Depth (MSAD)

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      I7. MSAD Calculation - Overview

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      I8. Legacy wells

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      I9 Documenting records and data

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      I10 Communication between wells and subsurface teams

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      I11. Conclusion

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      Introduction slide - De-energisation of offshore oil and gas installations

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      J2. High level objectives

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      J3 Identification of energy sources and associated hazards

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      J4 Strategy and planning

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      J5. Familiar tasks on a large scale

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      J6 Completions assurance package

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      J7. Key takeaways

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      J8. Lessons learned

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      Introduction slide - Engineering down and clean

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      K2. Definition

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      K3. Key objectives of engineering down and clean

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      K4. Terminology

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      K5 Phases of engineering down and clean

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      K6 Definition: Facilitation projects

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      K7 Introduction to facilitation projects

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      K8. Weight limits influencing facilitation projects

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      K9. Reference image 1

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      K10. Reference image 2

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      K11. Facilitation project case study

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      K12 Common examples of facilitation projects

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      K13. Facilitation projects vs core engineering down and clean activities

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      K14. OEUK Work Breakdown Structure (WBS) - Introduction

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      K15. Reference image | OEUK WBS

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      K16. The work breakdown structure and engineering down and clean elements

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      K17. Terminology: Late life vs ultra-late life

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      K18. Late life vs ultra-late life

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      K19 Examples of EDC linked activities

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      K20. Changing mindsets | Fit for purpose solutions

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      K21. Terminology familiarisation

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      K22. Reference image

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      K23. Fit-For-purpose solutions

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      K24. Closing remarks

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      Chapter Title

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      L2 Disembarkation introduction

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      L3 Heavy lift contractor interface and expectations

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      L4. Factors influencing duration

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      L5 - Disembarkation goals

    6. L6 Updating key documentation Free preview
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      L7 Disembarkation procedure

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      L8 Final week

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      L9 Final day

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      L10 Lessons learned

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      Chapter Title

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      M2. Introduction to topside removal and asset overview

    3. M3 Removal method considerations Free preview
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      M4 Planning considerations

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      M5 Proposed solution for case study

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      M6 Contract overview

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      M7 Material inventory

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      M8 Topside removal execution

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      M9. Multi-asset campaign

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      M10. Lessons learned

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      Chapter title

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      N2. Substructure overview

    3. N3 Jacket removal preparation Free preview
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      N4 Jacket removal execution

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      N5 Laydown onshore

    6. N6 Front running Free preview
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      N7 Downsizing

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      N8 Material management

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      N9 Lessons learned

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      Chapter Title

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      O2. Intro to FPSO Western Isles

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      O3 Chains preparation

    4. O4 - Chain cutting Free preview
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      O5. Chain recovery

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      O6. Station keeping

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      O7. The tow

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      O8. Vessel selection

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      O9. Conclusion

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      Chapter Title

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      P2 Introduction to waste management

    3. P3 Materials awareness Free preview
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      P4. Hazardous materials awareness

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      P5. Waste management plan

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      P6 Options to optimise re-use and cost effective

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      P7. Cost saving examples

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      P8a Onshore site selection considerations

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      P8b Dismantling sites - Minimum condition

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      P9. UK Onshore decommissioning dismantling sites

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      P10 Materials management pre-receipt flowchart

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      Chapter Title

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      Q2. WBS 9 - Subsea infrastructure

    3. Q3. Concrete mattresses Free preview
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      Q4. X-trees recovery

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      Q5 Flexibles

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      Q6. Midwater arches

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      Q7 Bundles and towheads

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      Q8. Early engagement

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      Q9. Vessel sharing

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      Q.10 Hazard and challenges

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      Q11. Summary

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      Q12. Site remediation

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      Q13. Pipeline industry guideline documents

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      Q14. HSE Pipelines Safety Regulations 1996 – Regulation 14

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      Chapter Title

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      R2 Rigless well abandonment

    3. R3 SWAT tool case study Free preview
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      R4. Wellhead Severance using abrasive water jet cutting tool

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      R5 Topside cutting tools

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      R6 Substructure cutting tools

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      R7 Subsea infrastructure recovery tools

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      R8. Conclusion

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      Chapter Title

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      S2. Risk management

    3. S3 - Changes in risk profile Free preview
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      S4 Safety case update and review

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      S5. Common topside risks

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      S6. Subsea infrastructure removal risks

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      S7. Conclusion

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      S8. Key safety decommissioning documentation UK

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      S9. Offshore Safety Act 1992

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      S10. The Offshore Installations (Safety Case) Regulations 2005

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      S11. HSE Offshore Information Sheet 2/2008: Verification during decommissioning and dismantling

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      S12. Health and Safety at Work etc. Act 1974

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      S13. Construction (Design and Management) Regulations 2015

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      Chapter Title

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      T1. Permitting lessons learned introduction

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      T2. Rock dumping - Undesignated sites

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      T3. Materials inventory

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      T4. Changing of supplier

    6. T5. Nesting birds Free preview
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      T6. Seabed disturbance risk

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      T7 Minimal manning philosophy

    9. T8 Optimising maintenance Free preview
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      T9 PLANC register overview

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      W1. Knowledge check information page

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      W2. Knowledge check ECITB