EN ISO 16530-1:2017

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Common elements of the well integrity life cycle
6 Basis of design phase
7 Well design phase
8 Well construction phase
9 Well operational phase
10 Well intervention phase
11 Well abandonment phase
Annex A (informative) - Risk assessment techniques
Annex B (informative) - Risk register
Annex C (informative) - Example of well integrity roles
        and responsibilities chart
Annex D (informative) - Example of a well integrity
        competence matrix
Annex E (informative) - Examples of well barrier
        elements, functions and failure characteristics
Annex F (informative) - Examples of well barriers during
        the well life cycle and a well barrier schematic
Annex G (informative) - Example of performance standard
        for well barrier elements
Annex H (informative) - Function testing by analyzing
        hydraulic signature
Annex I (informative) - Determination of leak rate
Annex J (informative) - Well handover
Annex K (informative) - Examples of key performance
        indicators
Annex L (informative) - Example of hazard identification
        checklist
Annex M (informative) - Example plot of pore pressure versus
        formation strength
Annex N (informative) - Well barrier element
        performance requirements
Annex O (informative) - Example of leak testing
        of gas-lift valves
Annex P (informative) - Example of well operating limits
Annex Q (informative) - Example of possible well leak paths
Annex R (informative) - MAASP calculations
Annex S (informative) - Example of a change in MAASP calculations
Bibliography

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.