Well integrity for workovers and recompletions / Les Skinner.

Format:

Book

Author/Creator:

Skinner, Les, author.

Series:

Gulf Drilling Guides

Language:

English

Subjects (All):

Oil well drilling.

Oil wells--Maintenance and repair.

Oil wells.

Physical Description:

1 online resource (612 pages)

Edition:

1st ed.

Place of Publication:

Cambridge, MA ; Kidlington, Oxford : Gulf Professional Publishing, [2021]

Summary:

Well Integrity for Workovers and Recompletions delivers the concise steps and processes necessary to ensure that production wells minimize failure.After understanding the introductory background on well integrity and establishing the best baseline, the reference advances into various failure modes that can be expected.

Contents:

Cover

Half title

Full title

Copyright

Disclaimer

Dedication

Short Contents

Full Contents

List of Figures

List of Tables

Foreword

Acknowledgments

Chapter 1 - Introduction and definitions

1.1 Scope of this book

1.2 Nomenclature, workovers, and recompletions

1.2.1 Workover

1.2.2 Recompletion

1.3 Other definitions

1.3.1 Operator

1.3.2 Working interest owner

1.3.3 Royalty owner

1.3.4 Overriding royalty interest

1.3.5 Net revenue interest

1.3.6 Overhead

1.4 This book's organization

Chapter quiz

Bibliography

Chapter 2 - Well integrity basics

2.1 Terminology

2.1.1 Well life cycle

2.1.2 Well integrity in workovers and recompletions

2.1.3 New well integrity

2.2 Wellbore sketch

2.2.1 Planned well

2.2.2 As-built well

2.3 Barriers

2.3.1 Barrier element

2.3.2 Barrier envelope

2.3.3 Primary barrier

2.3.4 Secondary barrier

2.3.5 Barrier effectiveness

2.3.6 Barrier breach

2.3.7 Containment systems

2.4 Current well integrity

2.4.1 Newly drilled wells

2.4.2 Older wells

2.4.3 Newly acquired wells

2.4.4 Establishing/re-establishing baseline well integrity

2.5 Well integrity management system

Chapter 3 - Performance-related symptoms of well integrity problems

3.1 Introduction

3.2 Expected well performance

3.2.1 General comments

3.2.2 Fluid flow

3.2.3 Producing wells

3.2.4 Injection wells

3.3 Anomalous well behavior

3.3.1 General comments

3.3.2 Surface leaks

3.3.3 Annular casing pressure

3.3.4 Changes in production rates

3.4 Summary

CHAPTER 4 - Mature well integrity diagnostics and assessment

4.1 Introduction

4.2 Well integrity assessment.

4.2.1 Current barrier condition

4.2.2 Historical evidence of well integrity issues

4.3 Well integrity diagnostics program-general

4.3.1 Introduction

4.3.2 Objectives

4.3.3 Top-down analysis

4.3.4 Nondestructive inspection methods

4.4 Surface well equipment analysis

4.4.1 General comments

4.4.2 The well head

4.4.3 Analytical methods

4.5 Production/injection tubing and packer

4.5.1 Tubing design

4.5.2 Packer type and design

4.5.3 Material of construction

4.5.4 Tubing erosion

4.5.5 Analytical methods

4.5.6 Combination downhole analytical techniques

4.5.7 Surface analytical techniques

4.6 Production/intermediate casing/liner

4.6.1 General comments

4.6.2 Well history

4.6.3 Remaining well life

4.6.4 Analytical methods

4.7 Cement sheath integrity

4.7.1 General comments

4.7.2 Well construction

4.7.3 Cement sheath integrity logs

4.7.4 Channel detection using fluid flow

4.8 Procedural considerations

4.9 Diagnostic program risk and cost considerations

4.9.1 Diagnostic risks

4.9.2 Diagnostics cost

4.10 Summary

Chapter 5 - Risk and economics

5.1 Introduction

5.2 Risk

5.2.1 General remarks

5.2.2 Risk types

5.2.3 Barrier weaknesses

5.2.4 Hazard identification

5.2.5 Risk assessment process

5.3 Economics

5.3.1 General comments

5.3.2 Reserve determinations

5.3.3 Economic indicators

5.4 Economics and risk combined

5.4.1 General comments

5.4.2 Risk management through contingency costs

5.4.3 Risk-weighting reserves

5.4.4 Production rate reductions

5.4.5 Multiple variable risk compensation

5.5 Summary

Chapter 6 - Workovers

6.1 Introduction

6.2 Factors encouraging workovers

6.2.1 Economics.

6.2.2 Working interest owner demands

6.2.3 Stockholder demands

6.2.4 Stakeholder demands

6.2.5 Regulatory agency requirements

6.3 Well integrity requirements for workovers

6.3.1 Workover imposed stress

6.3.2 Continued service

6.3.3 Special considerations

6.4 Mechanical workovers

6.4.1 Repairs

6.4.2 Equipment reconfiguration

6.5 Production/injection rate restoration

6.5.1 Wellbore cleanouts

6.5.2 Fishing

6.5.3 Sidetracking around junk

6.5.4 Scale/paraffin/wax removal

6.5.5 Re-perforation

6.6 Acid stimulation

6.6.1 Acid stimulation history

6.6.2 HCl reactions in carbonates

6.6.3 HF reactions in sandstones and clays

6.6.4 Acid mixtures

6.6.5 Acid additives

6.6.6 Matrix acidizing

6.6.7 Acid fracturing

6.7 Hydraulic fracture stimulation

6.7.1 Fracture stimulation history

6.7.2 Hydraulic fracture stimulation theory

6.7.3 Fracturing fluids

6.7.4 Proppants

6.7.5 Factors limiting fracture conductivity

6.7.6 Fracture stimulation design

6.8 Sand exclusion

6.8.1 Sand production mechanisms

6.8.2 Sand exclusion workovers

6.9 Reasons discouraging a workover

6.9.1 Questionable economics

6.9.2 Poor past workover results

6.9.3 Increased risk profile

6.9.4 Depletion

6.9.5 Insufficient remaining well life

6.9.6 Waiting on improved technology

6.10 Summary

Chapter 7 - Recompletions

7.1 Introduction

7.2 Recompletion decision influencers

7.2.1 Recompletion requirements

7.2.2 Recompletion triggers

7.3 Recompletion types

7.3.1 Plug back and move up the hole

7.3.2 Adding perforations in another reservoir

7.3.3 Plug and go down the hole

7.3.4 Reconfiguring a wellbore to change its function

7.3.5 Plug and deepen.

7.3.6 Drilling lateral(s) in the existing completion interval

7.3.7 Drilling lateral(s) into a new reservoir

7.3.8 Sidetracking to a new BHL

7.4 Risk assessments for recompletions

7.4.1 Introduction

7.4.2 Geological risk

7.4.3 Reservoir risks

7.4.4 Mechanical issues

7.4.5 Legal and environmental risks

7.5 Factors encouraging recompletions

7.5.1 Continued use of wellbore

7.5.2 Leasehold protection

7.5.3 Protection of correlative rights

7.5.4 Waste prevention

7.5.5 Acquisition enhancement

7.5.6 Environmental activist opposition

7.5.7 Enabling a comprehensive field depletion plan

7.5.8 Economies of scale

7.6 Factors discouraging recompletions

7.6.1 Safety concerns

7.6.2 Negative experience

7.6.3 Operating philosophy

7.6.4 Divestment strategy

7.6.5 Budgetary constraints

7.6.6 Uncertain Operator future

7.6.7 Negative Operator inertia

7.7 Summary

APPENDIX A - Acronyms and abbreviations

APPENDIX B - Glossary

APPENDIX C - Terminology: workovers and recompletions

APPENDIX D - Production-related symptoms, failure modes, and outcomes

APPENDIX E -

APPENDIX F

Index

Back cover.

Notes:

Includes bibliographical references and index.

Description based on print version record.

Description based on publisher supplied metadata and other sources.

ISBN:

9780128182093

0128182091

9780128182086

0128182083

OCLC:

1259593016