Overview
EN ISO 10426-3:2019 - Petroleum and natural gas industries: Cements and materials for well cementing - Part 3 - provides standardized laboratory and simulation procedures for testing deepwater well cement formulations. It covers evaluation methods for well cements and cement blends intended for environments with water depths greater than 600 m, low seafloor temperatures, or otherwise low well temperatures. The document is an EN-adopted version of ISO 10426-3:2019 and supplements API RP 10B-3 (2nd edition, 2016), noting specific exceptions and additions.
Key topics
- Scope: Procedures focus on deepwater/low-temperature conditions and exclude mitigation of shallow water flow (see API RP 65).
- Test methods: Guidance on compressive strength (destructive) and sonic strength measurement procedures and reporting.
- Thickening time: Detailed thickening-time schedule determination, including tests for:
- casing or liner without liner-top packer/non-expandable liner hanger
- liner installations with liner-top packers or expandable liner hangers
- open-hole or closed-hole plugs
- continuous- and hesitating-pumping squeeze cementing
- Numerical pressure and temperature simulation: Added guidance to model realistic downhole temperature/pressure histories prior to laboratory testing.
- Location-specific strength evaluation: Separate treatment for strength determination at casing shoe, mudline, top-of-liner, potential flow zones, and plug/squeeze locations.
- Laboratory procedures: Expanded laboratory protocols for both sonic and destructive strength testing consistent with ISO and referenced ASTM methods where applicable.
- Units and terminology: Includes international and (where practical) United States customary units; aligns terms with API RP 10B-3.
Applications and users
Who benefits from EN ISO 10426-3:2019:
- Well cementing engineers designing deepwater cement jobs
- Laboratory technicians validating cement formulations for low-temperature environments
- Oil & gas operators and service companies performing liner/casing cementing and squeeze operations
- R&D teams developing foamed, ductile, or class A/C/G/H cements for deepwater use
- Regulators and standards bodies assessing conformity and best practices
Practical uses:
- Simulating downhole thermal histories to choose robust cement slurries
- Determining safe operational thickening times for pumping and placement
- Verifying compressive and sonic strength development at critical depths and features
- Supporting documentation for project risk assessment and cementing program approval
Related standards
- API RP 10B-3 (2nd ed., 2016) - referenced and supplemented
- API RP 65 - mitigation of shallow water flow (excluded topic)
- ISO 10426 series (other parts) - for broader well cementing materials guidance
Keywords: EN ISO 10426-3:2019, deepwater well cement testing, thickening time, compressive strength, sonic testing, API RP 10B-3, well cement formulations.
