ISO 10426-5-2024 PDF

Full title and description

ISO 10426-5:2024 — Oil and gas industries including lower carbon energy — Cements and materials for well cementing — Part 5: Determination of shrinkage and expansion of well cement formulations. This part specifies laboratory methods to measure dimensional changes (shrinkage and expansion) and the stress generated by expansion of well cement formulations under atmospheric and elevated pressure and temperature conditions representative of well environments.

Abstract

This document provides methods for testing well cement formulations to determine the dimensional changes that occur during curing (cement hydration) at atmospheric and elevated pressures, and to determine the stress generated by expansion when the cement is confined at elevated temperature and pressure. It includes specimen preparation, test apparatus, conditioning, measurement procedures, calculation methods and reporting requirements for shrinkage and expansion tests.

General information

• Status: Published.
• Publication date: 20 September 2024 (effective publication September 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.020; 91.100.10 (Extraction and processing of petroleum and natural gas; Cement).
• Edition / version: Edition 2 (2024).
• Number of pages: 22 pages (ISO edition information).

Scope

ISO 10426-5:2024 specifies laboratory methods for determining dimensional changes (shrinkage and expansion) of well cement formulations during curing, both at atmospheric pressure and under elevated pressure and temperature. It also describes procedures to measure the stress generated by expansion when the cement is confined, enabling assessment of potential sealing performance and mechanical compatibility of cement systems in well conditions.

Key topics and requirements

• Definitions and terminology relevant to shrinkage, expansion and confined-expansion stress.
• Specimen preparation and curing procedures for atmospheric and pressurized tests.
• Test apparatus and measurement techniques for length/dimension change and for confined expansion stress.
• Test conditions covering temperature, pressure and time to simulate well environments.
• Calculation methods for percentage dimensional change and for converting measured forces to stress values.
• Reporting requirements: test conditions, materials and mix composition, measured results and uncertainty, and interpretation guidance.

Typical use and users

Used by cement manufacturers, well-cementing service companies, completion and drilling engineers, laboratory testing organizations, research groups and regulators to evaluate and compare cement formulations for well integrity, zonal isolation and compatibility with downhole conditions. The standard supports product development, qualification testing and quality assurance for cements used in oil, gas and lower-carbon energy wells.

Related standards

ISO 10426-5 is part of the ISO 10426 series on cements and materials for well cementing. Relevant related parts include ISO 10426-1 (Specification for well cements), ISO 10426-2 (Testing of well cements and slurries), ISO 10426-3 (Testing of deepwater well cement formulations) and ISO 10426-6 (Static gel strength methods). ISO 10426-5:2024 revises and replaces the earlier ISO 10426-5:2004 edition.

Keywords

well cement, cementing, shrinkage, expansion, dimensional change, confined expansion stress, cement testing, well integrity, curing, temperature and pressure testing

FAQ

Q: What is this standard?

A: ISO 10426-5:2024 is an international standard that specifies laboratory test methods to determine shrinkage and expansion (and associated stresses in confinement) of well cement formulations used in oil, gas and lower-carbon energy wells.

Q: What does it cover?

A: It covers specimen preparation, apparatus and test procedures for measuring dimensional change at atmospheric and elevated pressure and temperature, methods to measure stress generated by expansion in confined conditions, calculation and reporting requirements for results and test conditions.

Q: Who typically uses it?

A: Cement manufacturers, well-cementing service companies, drilling and completion engineers, laboratory testing facilities, research organizations and regulatory bodies concerned with well integrity and cement performance.

Q: Is it current or superseded?

A: It is current. ISO 10426-5:2024 (Edition 2) was published in September 2024 and replaces ISO 10426-5:2004.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 10426 series (Cements and materials for well cementing). Other parts address specification, testing of slurries, deepwater formulations and gel-strength methods (for example ISO 10426-1, -2, -3 and -6).

Q: What are the key keywords?

A: well cement, shrinkage, expansion, dimensional change, confined stress, cement testing, well integrity.