oSIST prEN ISO 16530:2025
(Main)Oil and gas industries including lower carbon energy - Well integrity - Life cycle governance (ISO/DIS 16530:2024)
Oil and gas industries including lower carbon energy - Well integrity - Life cycle governance (ISO/DIS 16530:2024)
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.
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Bohrungsintegrität - Lebenszykluslenkung (ISO/DIS 16530:2024)
Industries du pétrole et du gaz, y compris les énergies à faible teneur en carbone - Intégrité du puits - Gouvernance du cycle de vie (ISO/DIS 16530:2024)
Le présent document 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), de sa fonction, de son état ou de son type (par exemple : puits à écoulement naturel, en activation ou injection).
Il 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.
Le présent document traite de chaque étape du cycle de vie du puits, telle que définie par les six phases de 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. La phase de construction se termine généralement lorsque le puits est transféré à la fonction des opérations de production.
d) La « Phase d'exploitation » définit les exigences ou recommandations et les méthodes concernant la gestion de l'intégrité du puits pendant son exploitation. En règle générale, les puits sont alors sous le contrôle de la fonction d'exploitation/de production.
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 (y compris la réce
Naftna in plinska industrija, vključno z nizkoogljično energijo - Celovitost vrtine - Upravljanje življenjskega cikla (ISO/DIS 16530:2024)
General Information
Relations
Overview
prEN ISO 16530 (ISO/DIS 16530:2024) - titled "Oil and gas industries including lower carbon energy - Well integrity - Life cycle governance" - defines a life‑cycle approach to managing well integrity across all well types (onshore, offshore, subsea) and ages. The draft standard supports the petroleum and natural‑gas industry (including lower‑carbon applications such as storage and CCS) by setting minimum requirements and scalable recommendations for a Well Integrity Management System (WIMS). It clarifies responsibilities, deliverables and verification activities across the well life cycle while explicitly excluding well control and borehole stability.
Key topics and technical requirements
- Six defined well life‑cycle phases: Basis of Design, Design, Construction, Operational, Intervention (including work‑over), and Abandonment - with specified deliverables and handover points between phases.
- Well integrity policy and the structure of a WIMS covering governance, roles and responsibilities.
- Risk assessment provisions: hazard identification, risk register and well type risk profiles to scale integrity controls.
- Barrier philosophy and hierarchy: design, operational, human and administrative barriers; definitions of well barriers and operational limits.
- Performance standards for equipment and well operating limits (verification and function testing requirements).
- Well barrier verification: testing, modelling verification, direction of flow and temperature effects.
- Documentation, reporting and handover: mandatory records and status reporting through the life cycle.
- Management of change, dispensations, continuous improvement, KPIs, lessons learned and auditing processes.
- Applicability to non‑petroleum wells: storage (flammable/non‑flammable), disposal, geothermal, solution mining and aquifers.
Practical applications and users
Who benefits:
- Well integrity managers, asset owners and operators establishing or updating a WIMS.
- Drilling, completion and production engineers designing barrier systems and well architecture.
- Integrity and inspection teams executing barrier verification, function testing and documentation.
- Intervention crews planning work‑overs and pre/post intervention assessments.
- Regulators and auditors seeking a consistent life‑cycle governance framework.
- Service companies and contractors aligning procedures and deliverables with operator requirements.
How it’s used:
- Develop risk‑based well designs and barrier strategies scaled to the well’s risk profile.
- Define verification and testing regimes for commissioning, operation and interventions.
- Standardize handover deliverables between design, construction and operation to reduce lifecycle gaps.
- Support abandonment planning with documented criteria and verification steps.
Related standards
- Builds on ISO 16530‑1:2017 concepts; issued as ISO/DIS 16530:2024 and circulated as prEN ISO 16530 for CEN review.
Keywords: well integrity, life cycle governance, ISO 16530, Well Integrity Management System, well barriers, risk assessment, barrier verification, oil and gas standards.
Frequently Asked Questions
oSIST prEN ISO 16530:2025 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Oil and gas industries including lower carbon energy - Well integrity - Life cycle governance (ISO/DIS 16530:2024)". This standard covers: 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.
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.
oSIST prEN ISO 16530:2025 is classified under the following ICS (International Classification for Standards) categories: 13.020.60 - Product life-cycles; 75.180.10 - Exploratory, drilling and extraction equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN ISO 16530:2025 has the following relationships with other standards: It is inter standard links to SIST EN ISO 16530-1:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase oSIST prEN ISO 16530:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Naftna in plinska industrija, vključno z nizkoogljično energijo - Celovitost vrtine -
Upravljanje življenjskega cikla (ISO/DIS 16530:2024)
Oil and gas industries including lower carbon energy - Well integrity - Life cycle
governance (ISO/DIS 16530:2024)
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Bohrungsintegrität -
Lebenszykluslenkung (ISO/DIS 16530:2024)
Industries du pétrole et du gaz, y compris les énergies à faible teneur en carbone -
Intégrité du puits - Gouvernance du cycle de vie (ISO/DIS 16530:2024)
Ta slovenski standard je istoveten z: prEN ISO 16530
ICS:
13.020.60 Življenjski ciklusi izdelkov Product life-cycles
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
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ISO/DIS 16530
ISO/TC 67/SC 4
Oil and gas industries including
Secretariat: ANSI
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2024-12-02
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ISO/DIS 16530:2024(en)
DRAFT
ISO/DIS 16530:2024(en)
International
Standard
ISO/DIS 16530
ISO/TC 67/SC 4
Oil and gas industries including
Secretariat: ANSI
lower carbon energy — Well
Voting begins on:
integrity — Life cycle governance
ICS: ISO ics
Voting terminates on:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
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BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
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Published in Switzerland Reference number
ISO/DIS 16530:2024(en)
ii
ISO/DIS 16530:2024(en)
Contents Page
Foreword .vii
Introduction .viii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Abbreviated terms . 10
5 Non-Petroleum Wells.11
5.1 Abandoned Wells .11
5.2 Storage Wells - Flammable fluids (Gas, Oil, Hydrogen, etc) .11
5.3 Storage Wells - Non-flammable fluids (Carbon Capture (predominantly carbon
dioxide), Brines, Chemicals etc.) .11
5.4 Disposal Wells .11
5.5 Geothermal Wells .11
5.6 Solution Mining . 12
5.7 Aquifers . 12
6 Common elements of the well integrity life cycle .12
6.1 General . 12
6.2 Well integrity . 12
6.3 Well integrity policy . 12
6.4 Well integrity management system . 12
6.5 Risk assessment . 13
6.5.1 General . 13
6.5.2 Risk register .14
6.5.3 Well type risk profile . 15
6.6 Organizational structure and tasks . 15
6.7 Barriers . 15
6.7.1 General . 15
6.7.2 Barrier philosophy .16
6.7.3 Well barriers .16
6.7.4 Operational barriers .18
6.7.5 Human barriers .18
6.7.6 Administrative controls .18
6.7.7 Impact barriers .19
6.8 Performance standards for equipment .19
6.8.1 General .19
6.8.2 Well operating limits .19
6.9 Well barrier verification . 20
6.9.1 General . 20
6.9.2 Function testing . 20
6.9.3 Barrier verification testing . 20
6.9.4 Direction of flow .21
6.9.5 Effects of temperature .21
6.9.6 Modelling verification . 22
6.10 Reporting and documentation . 22
6.10.1 General . 22
6.10.2 Well integrity status reporting . 22
6.10.3 Well life cycle phase deliverables . 23
6.10.4 Well handover process . 23
6.11 Management of change .24
6.11.1 General .24
6.11.2 Dispensation from the WIMS . 25
6.12 Continuous improvement . . 25
6.12.1 General . 25
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ISO/DIS 16530:2024(en)
6.12.2 Key performance indicator monitoring . 25
6.12.3 Lessons learned . 26
6.13 Auditing . 26
6.13.1 General . 26
6.13.2 Audit process . 26
7 Basis of design phase.26
7.1 Basis of design phase objectives . 26
7.2 Organizational structure and tasks . 26
7.3 Well barriers .27
7.4 Hazard identification and assessment . 28
7.5 Well integrity considerations for the basis of design. 28
7.5.1 General information to be provided . 28
7.5.2 Well objectives and life cycle . 29
7.5.3 Inflow requirements . 29
7.5.4 Outflow requirements . 29
7.5.5 Well location and targets . 29
7.5.6 Prognoses regarding geological formations, pore pressure, formation strength
and temperature . 29
7.5.7 Data acquisition requirements . 30
7.5.8 Other considerations for well integrity . 30
7.5.9 Production and injection characteristics affecting well integrity through the
life cycle . 30
7.6 Quality assurance and approval process .31
7.7 Deliverables .31
8 Well design phase .31
8.1 Well design phase objectives .31
8.2 Organizational structure and tasks .31
8.3 Risk controls in well design .32
8.3.1 Risk register .32
8.3.2 Lessons learned .32
8.3.3 Well life cycle risk considerations.32
8.3.4 Additional considerations during well design . 33
8.4 Well barriers . 35
8.4.1 General . 35
8.4.2 Well barrier plan . 36
8.4.3 WBE design performance standards . 36
8.4.4 Verification of the final well barrier .37
8.4.5 Emergency shutdown related safety systems .37
8.5 Well operating limits . 39
8.6 Contingency planning for well construction . 39
8.7 Surveillance and monitoring requirements . 39
8.8 Well design deliverables, reporting and documentation . 39
9 Well construction phase .40
9.1 Well construction phase objectives . 40
9.2 Organizational structure and tasks . 40
9.3 Well programme .41
9.4 Well barrier schematic .41
9.5 Barrier verification .41
9.5.1 General .41
9.5.2 Wellhead movement and fatigue .41
9.5.3 Cement .42
9.5.4 Casing shoe testing .42
9.5.5 Wellhead seal profile .43
9.5.6 Tubular connections .43
9.5.7 Casing wear .43
9.6 Risk identification and assessment .43
9.7 Management of change . 44
iv
ISO/DIS 16530:2024(en)
9.7.1 Potential changes to the well plan . 44
9.7.2 Suspended well considerations . 44
9.8 Deliverables (reporting and documentation) . 44
9.8.1 Well handover information . 44
9.8.2 Risk register .45
9.9 Continuous improvement .45
10 Well operational phase .45
10.1 Well operational phase objectives .45
10.2 Well barriers . 46
10.2.1 General . 46
10.2.2 Performance standards . 46
10.2.3 Leak rates .47
10.3 Well monitoring and surveillance . 49
10.3.1 General . 49
10.3.2 Monitoring and surveillance frequency . 49
10.3.3 Well operating limits . 50
10.3.4 Suspended and shut-in wells .51
10.3.5 Visual inspection .51
10.3.6 Well logging .52
10.3.7 Corrosion, Erosion and structural integrity .52
10.3.8 Well head elevation monitoring. 54
10.3.9 Reservoir subsidence . 54
10.4 Annulus pressure management. 55
10.4.1 Management considerations . 55
10.4.2 Sources of annulus pressure . 55
10.4.3 Annulus pressure monitoring and testing . 56
10.4.4 Frequency of monitoring tubing and annulus casing pressures .57
10.4.5 Investigation of annulus pressure .57
10.4.6 Maximum allowable annulus surface pressure . 58
10.4.7 Maintaining annulus pressure within the thresholds .61
10.4.8 Review and change of MAASP and thresholds .61
10.5 Well maintenance .62
10.5.1 General .62
10.5.2 Replacement parts . 63
10.5.3 Frequency of maintenance . 63
10.5.4 Component testing methods . 64
10.6 Risk assessment of well integrity failure and its management. 64
10.6.1 General . 64
10.6.2 Integrity failure ranking and prioritization . 64
10.6.3 Well failure model . 64
10.7 Reporting and documentation . 66
10.8 Periodic well review .67
10.8.1 Well use review .67
10.8.2 End of well life review .67
10.9 Change of well use / repurposing of wells. .67
10.10 Well stock performance review .67
10.11 Continuous improvement . . 69
11 Well intervention / workover phase .70
11.1 Well intervention phase objectives .70
11.2 Organizational structure and tasks .70
11.3 Well handover .71
11.4 Well intervention programme .71
11.5 Well barriers .71
11.5.1 General .71
11.5.2 Well barrier plans .71
11.5.3 Well barrier qualification .71
11.5.4 Well barrier verification . 72
11.5.5 Well operating limits . 72
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ISO/DIS 16530:2024(en)
11.6 Risk management . 72
11.7 Management of change . 72
11.8 Deliverables (documentation and reports) . 73
12 Well abandonment phase .73
12.1 Well abandonment phase objectives . 73
12.2 Organizational structure and tasks . 73
12.3 Well abandonment programme .74
12.4 Well barriers for abandonment .74
12.4.1 General .74
12.4.2 Well barrier material selection and qualification. 75
12.4.3 Well barrier placement, configuration and redundancy . 75
12.4.4 Well barrier verification . 75
12.4.5 Reference documents for well abandonment barriers . 75
12.5 Risk management .76
12.6 Management of change .76
12.7 Deliverables (documentation and reports) .76
Annex A (informative) Risk assessment techniques .78
Annex B (informative) Examples of risk register .81
Annex C (informative) Example of well integrity roles and responsibilities chart .83
Annex D (informative) Example of a well integrity competence matrix .84
Annex E (informative) Examples of well barrier elements, functions and failure characteristics .86
Annex F (informative) Examples of well barriers during the well life cycle and a well barrier
schematic .89
Annex G (informative) Example of performance standard for well barrier elements .96
Annex H (informative) Function testing by analysing hydraulic signature .98
Annex I (informative) Determination of leak rate .100
Annex J (informative) Well handover .104
Annex K (informative) Examples of key performance indicators .106
Annex L (informative) Example of hazard identification checklist .107
Annex M (informative) Example plot of pore pressure versus formation strength .108
Annex N (informative) Well barrier element performance requirements .109
Annex O (informative) Example of leak testing of gas-lift valves .110
Annex P (informative) Example of well operating limits .112
Annex Q (informative) Example of possible well leak paths .113
Annex R (informative) MAASP calculations .115
Annex S (informative) Example of a change in MAASP calculations .122
Bibliography .125
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ISO/DIS 16530:2024(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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