Petroleum and natural gas industries - Well integrity - Part 1: Life cycle governance (ISO 16530-1:2017)

ISO 16530-1:2017 is applicable to all wells that are operated by the petroleum and natural gas industry. This document is applicable to any well, or group of wells, regardless of their age, location (including onshore, subsea and offshore wells) or type (e.g. naturally flowing, artificial lift, injection wells).
ISO 16530-1:2017 is intended to assist the petroleum and natural gas industry to effectively manage well integrity during the well life cycle by providing:
-      minimum requirements to ensure management of well integrity; and
-      recommendations and techniques that well operators can apply in a scalable manner based on a well's specific risk characteristics.
Assuring well integrity comprises two main building blocks: the first is to ensure well integrity during well design and construction, and the second is to manage well integrity throughout the remaining well life thereafter.
This document addresses each stage of the well life cycle, as defined by the six phases in a) to f), and describes the deliverables between each phase within a Well Integrity Management system.
a)    The "Basis of Design Phase" identifies the probable safety and environmental exposure to surface and subsurface hazards and risks that can be encountered during the well life cycle. Once identified, these hazards and risks are assessed such that control methods of design and operation can be developed in subsequent phases of the well life cycle.
b)    The "Design Phase" identifies the controls that are to be incorporated into the well design, such that appropriate barriers can be established to manage the identified safety and environmental hazards. The design addresses the expected, or forecasted, changes during the well life cycle and ensures that the required barriers in the well's design are based on risk exposure to people and the environment.
c)    The "Construction Phase" defines the required or recommended elements to be constructed (including rework/repair) and verification tasks to be performed in order to achieve the intended design. It addresses any variations from the design which require a revalidation against the identified hazards and risks.
d)    The "Operational Phase" defines the requirements or recommendations and methods for managing well integrity during operation.
e)    The "Intervention Phase" (including work-over) defines the minimum requirements or recommendations for assessing well barriers prior to, and after, any well intervention that involves breaking the established well barrier containment system.
f)     The "Abandonment Phase" defines the requirements or recommendations for permanently abandoning a well.
The six phases of the well life cycle, as defined in this Scope, and their interrelationships, are illustrated in Figure 1 in the Introduction.
ISO 16530-1:2017 is not applicable to well control. Well control refers to activities implemented to prevent or mitigate unintentional release of formation fluids from the well to its surroundings during drilling, completion, intervention and well abandonment operations, and involves dynamic elements, i.e. BOPs, mud pumps, mud systems, etc.
ISO 16530-1:2017 is not applicable to wellbore integrity, sometimes referred to as "borehole stability". Wellbore integrity is the capacity of the drilled open hole to maintain its shape and remain intact after having been drilled.

Erdöl- und Erdgasindustrie - Bohrungsintegrität - Teil 1: Lebenszykluslenkung (ISO 16530-1:2017)

Dieses Dokument gilt für alle durch die Erdöl- und Erdgasindustrie betriebenen Bohrungen. Dieses Dokument gilt für jede Bohrung oder Gruppe von Bohrungen, unabhängig von deren Alter, Lage (einschließlich Onshore-, Unterwasser- und Offshore-Bohrungen) oder Typ (z. B. Bohrungen mit natürlichem Zufluss, künstlichem Gaslift, Injektion).
Dieses Dokument ist vorgesehen zur Unterstützung der Erdöl- und Erdgasindustrie beim wirksamen Management der Integrität einer Bohrung während ihres Lebenszyklus durch Bereitstellung von:
—   Mindestanforderungen für die Sicherstellung des Bohrungsintegritätsmanagements; und
—   Empfehlungen und Verfahren, die der Bohrungsbetreiber auf anpassbare Weise anwenden kann, auf der Grundlage bohrungsspezifischer Risikomerkmale.
Die Sicherstellung der Bohrungsintegrität umfasst zwei Hauptbestandteile: erstens die Sicherstellung der Bohrungsintegrität während der Auslegung und Herstellung und zweitens im Anschluss daran das Management der Bohrungsintegrität während der gesamten verbleibenden Lebensdauer der Bohrung.
Dieses Dokument behandelt jede der nachstehend festgelegten sechs Phasen a) bis f) des Lebenszyklus einer Bohrung und beschreibt die zwischen den jeweiligen Phasen innerhalb eines Bohrungsintegritäts-managementsystems zu erbringenden Arbeitsergebnisse:
a)   in der „Auslegungsgrundlagenphase“ werden die wahrscheinlichen Gefährdungen in Zusammenhang mit der Sicherheit und der Einwirkung von Umweltbedingungen Über- und Untertage festgestellt, die während des Lebenszyklus einer Bohrung auftreten können. Nach ihrer Feststellung werden diese Gefährdungen und Risiken analysiert, damit Kontrollverfahren für Auslegung und Betrieb in nachfolgenden Phasen des Lebenszyklus einer Bohrung entwickelt werden können;
b)   in der „Auslegungsphase“ werden die Kontrollen festgelegt, die bereits bei der Auslegung der Bohrung zu berücksichtigen sind, um geeignete Barrieren zum Management der festgestellten Sicherheits- und Umweltrisiken vorsehen zu können. Bei der Auslegung werden die erwarteten oder vorhersehbaren Änderungen während des Lebenszyklus einer Bohrung berücksichtigt und sichergestellt, dass die erforderlichen Barrieren bereits bei der Auslegung der Bohrung auf das Risiko für Personen und Umwelt abgestimmt sind;
c)   in der „Bohr- und Inbetriebnahmephase“ werden die die durchzuführenden Arbeitsschritte (einschließlich Nacharbeit/Reparatur) und durchzuführenden Verifizierungstätigkeiten festgelegt, die für das Erreichen der vorgesehenen Auslegung erforderlich sind oder empfohlen werden. Sie behandelt sämtliche Abweichungen von der Auslegung, die eine erneute Validierung hinsichtlich der identifizierten Gefährdungen und Risiken erfordern;
d)   in der „Betriebsphase“ werden die Anforderungen oder Empfehlungen sowie Verfahren für das Bohrungsintegritätsmanagement während des Betriebs festgelegt;
e)   in der „Interventionsphase“ (einschließlich Aufwältigung) werden die Mindestanforderungen oder Empfehlungen für die Bewertung der Bohrungsbarrieren vor und nach jeglicher Intervention festgelegt, die das geplante Öffnen des Barrieresystems berücksichtigt;
f)   in der „Verfüllungsphase“ werden die Anforderungen oder Empfehlungen für den dauerhaften Verschluss einer Bohrung festgelegt.
Die in diesem Anwendungsbereich festgelegten sechs Phasen des Lebenszyklus einer Bohrung und deren wechselseitige Beziehungen sind in Bild 1 in der Einleitung dargestellt
...

Industrie du pétrole et du gaz naturel - Intégrité du puits - Partie 1 : Gouvernance du cycle de vie (ISO 16530-1:2017)

L'ISO 16530-1:2017 s'applique à tous les puits exploités par l'industrie du pétrole et du gaz naturel. Le présent document s'applique à tout puits ou groupe de puits, indépendamment de son âge, de sa localisation (y compris puits terrestre, sous-marin et en mer) ou de son type (par exemple: puits à écoulement naturel, en activation ou injection).
L'ISO 16530-1:2017 a pour objet d'aider l'industrie du pétrole et du gaz naturel à gérer efficacement l'intégrité du puits pendant son cycle de vie en fournissant:
-      les exigences minimales auxquelles satisfaire pour assurer la gestion de l'intégrité du puits; et
-      les recommandations et les techniques que les exploitants de puits peuvent appliquer de manière évolutive, en fonction des caractéristiques de risque spécifiques d'un puits.
L'assurance de l'intégrité du puits repose sur deux composantes principales: premièrement, assurer l'intégrité du puits pendant sa conception et sa construction et, deuxièmement, gérer par la suite l'intégrité du puits pendant sa durée de vie restante.
L'ISO 16530-1:2017 traite de chaque étape du cycle de vie du puits, telle que définie par les six phases a) à f), et décrit les livrables requis entre chaque phase dans le cadre d'un système de gestion de l'intégrité du puits:
a)    La «Phase de base de conception» identifie les expositions probables, ayant une incidence sur la sécurité et l'environnement, aux phénomènes dangereux et risques en surface et subsurface pouvant être rencontrés pendant le cycle de vie du puits. Une fois identifiés, ces phénomènes dangereux et risques sont évalués de sorte que des méthodes de contrôle de la conception et de l'exploitation puissent être mises au point dans les phases suivantes du cycle de vie du puits.
b)    La «Phase de conception» identifie les mesures de contrôle à intégrer à la conception du puits, de manière à pouvoir établir des barrières appropriées pour gérer les phénomènes dangereux identifiés relatifs à la sécurité et à l'environnement. La conception traite des changements attendus ou prévus pendant le cycle de vie du puits et assure que les barrières nécessaires dans la conception du puits sont basées sur l'exposition au risque des personnes et de l'environnement.
c)    La «Phase de construction» définit les éléments qu'il est nécessaire ou recommandé de construire (y compris reprise/réparation) ainsi que les activités de vérification qu'il faut réaliser afin d'obtenir la conception désirée. Elle traite des changements dans la conception qui nécessitent une revalidation en fonction des phénomènes dangereux et risques identifiés.
d)    La «Phase d'exploitation» définit les exigences ou recommandations et les méthodes concernant la gestion de l'intégrité du puits pendant son exploitation.
e)    La «Phase d'intervention» (y compris reconditionnement) définit les exigences minimales ou les recommandations concernant l'évaluation des barrières du puits avant et après une intervention sur le puits nécessitant la rupture du système de confinement constitué par les barrières du puits.
f)     La «Phase d'abandon» définit les exigences ou les recommandations relatives à l'abandon définitif d'un puits.
Les six phases du cycle de vie du puits, telles que définies dans le présent article «Domaine d'application», et leurs interrelations sont illustrées à la Figure 1de l'Introduction.
L'ISO 16530-1:2017 n'est pas applicable au contrôle du puits. Le contrôle du puits désigne les activités mises en place pour prévenir

Industrija za predelavo nafte in zemeljskega plina - Celovitost vrtine - 1. del: Upravljanje življenjskega cikla (ISO 16530-1:2017)

Ta standard o celovitosti vrtine podaja navodila za industrijo za predelavo nafte in zemeljskega plina za učinkovito upravljanje celovitosti vrtine med delujočim stanjem vrtine. »Delujoče stanje vrtine« je opredeljeno kot življenjski cikel vrtine od predaje v fazi izgradnje do faze opustitve, kar zagotavlja skladnost z določeno ovojnico za varno obratovanje. Standard obravnava proces upravljanja celovitosti vrtine z identificiranimi vrstami vrtin glede na tveganje izpostavljenosti za ljudi, okolje, sredstva in ugled, podporo pa zagotavljajo povezani načrti vzdrževanja/nadzora, tehnični pregledi in upravljanje sprememb, kot je podrobno navedeno v naslednjih korakih:
1. Proaktivni proces spremljanja vrtine/pregleda na terenu za ovojnico za varno obratovanje vrtine, ki vključuje spremembe parametrov toka, sestave plina ali pretoka, tlaka vmesnih prostorov, korozije ali obrabe, kar zagotavlja, da vrtina obratuje varno v okviru svojih omejitev. Spremembe ovojnic za obratovanje je treba zabeležiti, povezano opravilo za zagotavljanje vzdrževanja in nadzora stanja vrtine pa je treba posodobiti.
2. Vrste vrtin, določene na podlagi okolja (na kopnem, na morju, pod morjem) in funkcionalnosti (injektor, proizvajalec, umetno dviganje, plin, nafta, voda) s podanimi ovojnicami za obratovanje ali pregradnimi elementi. Zahteve za pregradne elemente temeljijo na morebitnem tveganju za izliv vrtine in resnosti vpliva na okolje. Vrsta vrtine določa pogostost pregledov in vzdrževanja določenih pregrad, da se zmanjša tveganje za okolje, ljudi, sredstva in ugled.  
3. Nadzor na podlagi tveganja in načrti vzdrževanja na podlagi vrste vrtine in izpostavljenosti tveganju, ki zagotavljajo, da se vrtine vzdržujejo v ovojnicah za varno obratovanje. Za zmanjšanje tveganja za nenadzorovano sproščanje ogljikovodikov ali povezanih proizvodov pri proizvodnih ali brizgalnih dejavnostih v okolje (ozračje/morje/močvirje/kopno ali vodonosniki) v življenjskem ciklu posamezne vrtine.

General Information

Status
Published
Publication Date
21-Mar-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
31-Oct-2016

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SLOVENSKI STANDARD
SIST EN ISO 16530-1:2017
01-maj-2017
Industrija za predelavo nafte in zemeljskega plina - Celovitost vrtine - 1. del:
Upravljanje življenjskega cikla (ISO 16530-1:2017)

Petroleum and natural gas industries - Well integrity - Part 1: Life cycle governance (ISO

16530-1:2017)

Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme - Auslegung, Konstruktion

und Instandhaltung von stahlverkleideten Rohrleitungen (ISO 16530-1:2017)

Pétrole et industries du gaz naturel - Intégrité du puits - Partie 1: Gouvernance du cycle

de vie (ISO 16530-1:2017)
Ta slovenski standard je istoveten z: EN ISO 16530-1:2017
ICS:
13.020.60 Življenjski ciklusi izdelkov Product life-cycles
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
SIST EN ISO 16530-1:2017 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16530-1:2017
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SIST EN ISO 16530-1:2017
EN ISO 16530-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2017
EUROPÄISCHE NORM
ICS 75.180.10
English Version
Petroleum and natural gas industries - Well integrity - Part
1: Life cycle governance (ISO 16530-1:2017)

Pétrole et industries du gaz naturel - Intégrité du puits Erdöl- und Erdgasindustrie - Bohrungsintegrität - Teil

- Partie 1: Gouvernance du cycle de vie (ISO 16530- 1: Leitlinien zur Lebenszykluslenkung (ISO 16530-

1:2017) 1:2017)
This European Standard was approved by CEN on 3 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16530-1:2017 E

worldwide for CEN national Members.
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SIST EN ISO 16530-1:2017
EN ISO 16530-1:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 16530-1:2017
EN ISO 16530-1:2017 (E)
European foreword

This document (EN ISO 16530-1:2017) has been prepared by Technical Committee ISO/TC 67

"Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries"

in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures

for petroleum, petrochemical and natural gas industries” the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by September 2017 and conflicting national standards

shall be withdrawn at the latest by September 2017.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom
Endorsement notice

The text of ISO 16530-1:2017 has been approved by CEN as EN ISO 16530-1:2017 without any

modification.
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SIST EN ISO 16530-1:2017
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SIST EN ISO 16530-1:2017
INTERNATIONAL ISO
STANDARD 16530-1
First edition
2017-03
Petroleum and natural gas
industries — Well integrity —
Part 1:
Life cycle governance
Pétrole et industries du gaz naturel — Intégrité du puits —
Partie 1: Gouvernance du cycle de vie
Reference number
ISO 16530-1:2017(E)
ISO 2017
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SIST EN ISO 16530-1:2017
ISO 16530-1:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 16530-1:2017
ISO 16530-1:2017(E)
Contents Page

Foreword ......................................................................................................................................................................................................................................vii

Introduction ............................................................................................................................................................................................................................viii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Abbreviated terms ...........................................................................................................................................................................................10

5 Common elements of the well integrity life cycle ............................................................................................................11

5.1 General ........................................................................................................................................................................................................11

5.2 Well integrity .........................................................................................................................................................................................11

5.3 Well integrity policy ........................................................................................................................................................................12

5.4 Well integrity management system....................................................................................................................................12

5.5 Risk assessment ..................................................................................................................................................................................12

5.5.1 General...................................................................................................................................................................................12

5.5.2 Risk register ......................................................................................................................................................................13

5.5.3 Well type risk profile .................................................................................................................................................14

5.6 Organizational structure and tasks ....................................................................................................................................14

5.7 Barriers .......................................................................................................................................................................................................14

5.7.1 General...................................................................................................................................................................................14

5.7.2 Barrier philosophy ......................................................................................................................................................15

5.7.3 Well barriers .....................................................................................................................................................................15

5.7.4 Operational barriers ..................................................................................................................................................17

5.7.5 Human barriers ..............................................................................................................................................................17

5.7.6 Administrative controls ..........................................................................................................................................17

5.7.7 Impact barriers ..............................................................................................................................................................18

5.8 Performance standards for equipment ...........................................................................................................................18

5.8.1 General...................................................................................................................................................................................18

5.8.2 Well operating limits .................................................................................................................................................18

5.9 Well barrier verification ...............................................................................................................................................................19

5.9.1 General...................................................................................................................................................................................19

5.9.2 Function testing .............................................................................................................................................................19

5.9.3 Barrier verification testing ...................................................................................................................................19

5.9.4 Direction of flow ............................................................................................................................................................20

5.9.5 Effects of temperature ........................................................................................................................................... ...21

5.9.6 Modelling verification ..............................................................................................................................................21

5.10 Reporting and documentation ...............................................................................................................................................21

5.10.1 General...................................................................................................................................................................................21

5.10.2 Well integrity status reporting..........................................................................................................................21

5.10.3 Well life cycle phase deliverables ...................................................................................................................22

5.10.4 Well handover process ........................................................................................................................................... ..23

5.11 Management of change .................................................................................................................................................................23

5.11.1 General...................................................................................................................................................................................23

5.11.2 MOC process .....................................................................................................................................................................23

5.11.3 Dispensation from the WIMS .............................................................................................................................24

5.12 Continuous improvement ...........................................................................................................................................................24

5.12.1 General...................................................................................................................................................................................24

5.12.2 Key performance indicator monitoring ....................................................................................................24

5.12.3 Lessons learned .............................................................................................................................................................25

5.13 Auditing ......................................................................................................................................................................................................25

5.13.1 General...................................................................................................................................................................................25

5.13.2 Audit process ...................................................................................................................................................................25

6 Basis of design phase ....................................................................................................................................................................................25

6.1 Basis of design phase objectives ...........................................................................................................................................25

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SIST EN ISO 16530-1:2017
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6.2 Organizational structure and tasks ....................................................................................................................................26

6.3 Well barriers ..........................................................................................................................................................................................27

6.4 Hazard identification and assessment .............................................................................................................................27

6.5 Well integrity considerations for the basis of design..........................................................................................28

6.5.1 General information to be provided .............................................................................................................28

6.5.2 Well objectives and life cycle ..............................................................................................................................28

6.5.3 Inflow requirements ..................................................................................................................................................28

6.5.4 Outflow requirements ..............................................................................................................................................29

6.5.5 Well location and targets .......................................................................................................................................29

6.5.6 Prognoses regarding geological formations, pore pressure, formation

strength and temperature .....................................................................................................................................29

6.5.7 Data acquisition requirements .........................................................................................................................29

6.5.8 Other considerations for well integrity .....................................................................................................30

6.5.9 Production and injection characteristics affecting well integrity through

the life cycle .......................................................................................................................................................................30

6.6 Quality assurance and approval process .......................................................................................................................30

6.7 Deliverables ............................................................................................................................................................................................30

7 Well design phase .............................................................................................................................................................................................31

7.1 Well design phase objectives ...................................................................................................................................................31

7.2 Organizational structure and tasks ....................................................................................................................................31

7.3 Risk controls in well design ......................................................................................................................................................32

7.3.1 Risk register ......................................................................................................................................................................32

7.3.2 Lessons learned .............................................................................................................................................................33

7.3.3 Well life cycle risk considerations ..................................................................................................................33

7.3.4 Additional considerations during well design ....................................................................................34

7.4 Well barriers ..........................................................................................................................................................................................36

7.4.1 General...................................................................................................................................................................................36

7.4.2 Well barrier plan ...........................................................................................................................................................36

7.4.3 WBE design performance standards ...........................................................................................................37

7.4.4 Verification of the final well barrier .............................................................................................................38

7.4.5 Emergency shutdown related safety systems .....................................................................................38

7.5 Well operating limits .......................................................................................................................................................................39

7.6 Contingency planning for well construction ..............................................................................................................39

7.7 Surveillance and monitoring requirements ................................................................................................................39

7.8 Well design deliverables, reporting and documentation .................................................................................40

8 Well construction phase ............................................................................................................................................................................40

8.1 Well construction phase objectives ....................................................................................................................................40

8.2 Organizational structure and tasks ....................................................................................................................................41

8.3 Well programme .................................................................................................................................................................................42

8.4 Well barrier schematic ..................................................................................................................................................................42

8.5 Barrier verification ...........................................................................................................................................................................42

8.5.1 General...................................................................................................................................................................................42

8.5.2 Wellhead movement and fatigue.....................................................................................................................42

8.5.3 Cement ...................................................................................................................................................................................43

8.5.4 Casing shoe testing......................................................................................................................................................43

8.5.5 Wellhead seal profile .................................................................................................................................................44

8.5.6 Tubular connections ..................................................................................................................................................44

8.5.7 Casing wear .......................................................................................................................................................................44

8.6 Risk identification and assessment ....................................................................................................................................44

8.7 Management of change .................................................................................................................................................................44

8.7.1 Potential changes to the well plan ................................................................................................................44

8.7.2 Suspended well considerations .......................................................................................................................45

8.8 Deliverables (reporting and documentation) ...........................................................................................................45

8.8.1 Well handover information ..................................................................................................................................45

8.8.2 Risk register ......................................................................................................................................................................46

8.9 Continuous improvement ...........................................................................................................................................................46

9 Well operational phase ...............................................................................................................................................................................46

iv © ISO 2017 – All rights reserved
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9.1 Well operational phase objectives .......................................................................................................................................46

9.2 Organizational structure and tasks ....................................................................................................................................47

9.3 Well barriers ..........................................................................................................................................................................................47

9.3.1 General...................................................................................................................................................................................47

9.3.2 Performance standards ...........................................................................................................................................47

9.3.3 Leak rates ............................................................................................................................................................................48

9.4 Well monitoring and surveillance........................................................................................................................................51

9.4.1 General...................................................................................................................................................................................51

9.4.2 Monitoring and surveillance frequency ....................................................................................................51

9.4.3 Well operating limits .................................................................................................................................................52

9.4.4 Suspended and shut-in wells .............................................................................................................................53

9.4.5 Visual inspection ...........................................................................................................................................................53

9.4.6 Well logging .......................................................................................................................................................................53

9.4.7 Corrosion monitoring ...............................................................................................................................................53

9.4.8 Corrosion monitoring and prevention – external.............................................................................54

9.4.9 Erosion monitoring ........................................................................................................................................... ..........54

9.4.10 Structural integrity monitoring .......................................................................................................................54

9.4.11 Well elevation monitoring ....................................................................................................................................55

9.4.12 Reservoir subsidence ................................................................................................................................................56

9.5 Annulus pressure management ............................................................................................................................................56

9.5.1 Management considerations ..............................................................................................................................56

9.5.2 Sources of annulus pressure ............
...

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