ISO 10426-2-2003 cor1-2006 PDF

Full title and description

ISO 10426-2:2003 (with Technical Corrigendum ISO 10426-2:2003/Cor 1:2006) — "Petroleum and natural gas industries — Cements and materials for well cementing — Part 2: Testing of well cements". This document specifies test methods, apparatus and reporting requirements for the laboratory testing of cement slurries and hardened cement samples under simulated well (atmospheric and downhole) conditions. The corrigendum published in 2006 corrects technical/editorial items in the 2003 text; an Amendment (Amd. 1:2005) added a water‑wetting capability test procedure.

Abstract

ISO 10426-2:2003 provides standardized procedures for preparing and testing well cement slurries and hardened specimens, covering density, rheology, thickening time, free water, fluid loss, compressive strength, curing, sample conditioning and high‑pressure/high‑temperature (HPHT) testing where applicable. The 2006 corrigendum corrects specific errors in the 2003 edition; Amendment 1 (2005) introduced a water‑wetting capability test. The standard is intended to ensure repeatable, comparable laboratory evaluation of cements and cement additives used in oil and gas well cementing operations.

General information

• Status: Published (ISO 10426-2:2003; technical corrigendum ISO 10426-2:2003/Cor 1:2006)
• Publication date: Main standard: October 2003; Technical Corrigendum 1: June 2006; Amendment 1 (water‑wetting capability): 2005.
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 75.020 (Extraction and processing of petroleum and natural gas); 91.100.10 (Cement. Gypsum. Lime. Mortar)
• Edition / version: Edition 1 (2003) with Corrigendum 1 (2006) and Amendment 1 (2005)
• Number of pages: Main document: 171 pages; Corrigendum: 2 (to 3) pages (technical corrigendum document).

Scope

This part of ISO 10426 establishes test methods, specimen preparation, curing procedures and reporting requirements to evaluate the properties and performance of well cements and cement slurries under conditions that simulate surface and downhole service. It covers procedures for measuring slurry density, rheology, thickening time, free water and fluid loss, as well as procedures for preparing and testing hardened specimens for compressive strength and other properties. The standard also addresses testing under elevated temperature and pressure where relevant and includes, via Amendment 1, a method for assessing water‑wetting capability. The 2006 corrigendum corrects identified errors in the published text of the 2003 edition.

Key topics and requirements

• Standardized preparation and mixing of cement slurries for laboratory tests.
• Rheological measurement procedures (viscometry) and reporting formats.
• Density measurement methods for slurries and set cement.
• Thickening time determination and interpretation for setting behaviour.
• Free water and sedimentation assessment procedures.
• Fluid loss and filtration testing for slurries.
• Curing regimes and specimen preparation for compressive-strength testing.
• HPHT test methods and apparatus considerations for downhole simulation.
• Requirements for equipment calibration, test reproducibility and detailed reporting of results.
• Water-wetting capability test method (introduced by Amendment 1:2005).
• Corrections and clarifications introduced by Technical Corrigendum 1 (2006).

Typical use and users

Used by oil and gas operators, cementing service companies, research and testing laboratories, standards and conformity assessment bodies, and regulatory authorities. Typical applications include laboratory formulation and quality-control testing of well cements and additives, evaluation of new cement blends for specific downhole conditions, and preparation of test reports that support well design and cementing operations.

Related standards

ISO 10426 is a multi‑part series. Closely related documents include ISO 10426-1 (Specifications for well cements) and ISO 10426-3 (Testing of deepwater well cement formulations). The part 2 test methods are also used alongside industry guidance such as API RP 10B series (procedures for testing well cements) and other regional/adopted versions (EN/DIN variants).

Keywords

well cementing, cement testing, slurry testing, rheology, thickening time, compressive strength, HPHT testing, fluid loss, free water, water‑wetting, ISO 10426, oil and gas, cement additives, corrigendum

FAQ

Q: What is this standard?

A: ISO 10426-2:2003 is the ISO standard that specifies laboratory test methods and requirements for evaluating cement slurries and hardened cement used in well cementing. It ensures consistent, reproducible testing for materials used in petroleum and natural gas wells. A technical corrigendum (ISO 10426-2:2003/Cor 1:2006) corrects errors in the 2003 text, and an Amendment (2005) added a water‑wetting capability test.

Q: What does it cover?

A: It covers test procedures for slurry density, rheology, thickening time, free water, fluid loss, specimen curing and compressive strength testing, plus guidance for HPHT testing and equipment calibration. It defines how tests should be performed and how results should be reported to enable consistent comparison between laboratories and products.

Q: Who typically uses it?

A: Petroleum operators, cement manufacturers, cementing service providers, independent test laboratories, R&D teams, and standards/regulatory bodies involved in well construction and integrity assessment.

Q: Is it current or superseded?

A: The original edition was published in October 2003; a technical corrigendum was issued in June 2006 and Amendment 1 was issued in 2005. Users should confirm whether a newer edition or replacement exists in their jurisdiction before relying on the 2003 text for contractual or regulatory compliance. (ISO periodically reviews standards; national/adopted versions may reflect later revisions.)

Q: Is it part of a series?

A: Yes — ISO 10426 is a series addressing cements and materials for well cementing. Part 1 covers specifications for well cements; Part 2 covers testing (this document); Part 3 addresses testing for deepwater well cement formulations. Other related ISO and API documents provide complementary specifications and recommended practices.

Q: What are the key keywords?

A: Well cementing, cement testing, slurry, rheology, HPHT, thickening time, fluid loss, compressive strength, water‑wetting, ISO 10426.