EN ISO 10426-2:2003/A1:2005 PDF

Petroleum and natural gas industries - Cements and materials for well cementing - Part 2: Testing of well cements - Amendment 1: Water-wetting capability testing (ISO 10426-2:2003/A1:2005)

Title (English):

EN ISO 10426-2:2003/A1:2005

Petroleum and natural gas industries - Cements and materials for well cementing - Part 2: Testing of well cements - Amendment 1: Water-wetting capability testing (ISO 10426-2:2003/A1:2005)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: September 1, 2005
Edition:: CEN EN 10426 edition 1 version 1
ICS:: 75.020

Document language:

enru

Delivery time:1–7 days

Price:44 €

Technical details

Technical committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
SKU: EN ISO 10426-2:2003/A1:2005

Abstract

Overview

EN ISO 10426-2:2003/A1:2005 is an amendment to ISO 10426-2 (Part 2: Testing of well cements) published by CEN/ISO for the petroleum and natural gas industries. Amendment A1 adds a standardized Water‑Wetting Capability Test (WWCT) to evaluate how well spacers and preflushes restore a water‑wet condition to surfaces exposed to oil‑ and synthetic‑based drilling fluids - a key factor for achieving reliable cement bonding and well integrity.

Key topics and technical requirements

Scope of the WWCT
- Designed to assess the apparent water‑wetting capability of aqueous spacers/preflushes against oil‑wetted surfaces.
- Not intended for bulk displacement assessment or direct spacer/mud compatibility testing.
- Not suitable for non‑aqueous or non‑conductive systems, or mixtures of surfactants in base oils.
Definitions
- Adds the term water‑wetting capability: capability of a fluid to produce or restore a water‑wetted state (fully water‑wet is most desirable for cement bonding).
Method and apparatus
- Continuous measurement of electrical conductivity between electrodes. The test infers emulsion state and wettability when the titrant spacer is conductive and the titrated drilling fluid is non‑conductive (oil‑external).
- Typical sample volume: ~500 ml per test.
- Test limited to atmospheric pressure and temperatures ≤ 90 °C (194 °F). For conditioning above 90 °C, use HTHP equipment and cool below 90 °C before depressurizing.
Sample preparation and procedure
- Prepare mud per supplier instructions; condition spacer fluids to anticipated BHCT (Bottom Hole Circulating Temperature).
- Slowly titrate conductive spacer into non‑conductive mud while stirring; monitor conductivity until a stable reading indicates a water‑continuous phase (water‑wet).
- Report results as volume percentage V = Vs / (Vs + Vm) × 100, where Vs = volume of spacer required and Vm = initial mud volume (example: 150 ml spacer + 200 ml mud → 43%).
Safety
- Follow laboratory safety for oil/synthetic/solvent fluids; observe flash points, ventilation, and handling procedures.

Applications and users

Used by drilling and cementing engineers, mud engineers, laboratory testing services, oilfield service companies, and well integrity specialists to:
- Select appropriate preflushes, spacers, or surfactant components before cementing.
- Demonstrate the ability of spacer systems to restore water‑wet surfaces after oil‑based drilling fluids.
- Support cement bond quality assurance and reduce gas migration risks.

Related standards

This amendment is part of ISO 10426‑2 (Testing of well cements), prepared by ISO/TC 67 (materials and equipment for petroleum and natural gas industries). Users should consult the main ISO 10426‑2 document for full cement testing methods and requirements.

Keywords: well cementing, water‑wetting capability, WWCT, spacer testing, preflush, oil‑based drilling fluids, cement bonding, ISO 10426‑2, EN ISO 10426‑2:2003/A1:2005.

Related standards

Mentioned in the description and other EN standards

Abstract

Overview

Key topics and technical requirements

Scope of the WWCT
- Designed to assess the apparent water‑wetting capability of aqueous spacers/preflushes against oil‑wetted surfaces.
- Not intended for bulk displacement assessment or direct spacer/mud compatibility testing.
- Not suitable for non‑aqueous or non‑conductive systems, or mixtures of surfactants in base oils.
Definitions
- Adds the term water‑wetting capability: capability of a fluid to produce or restore a water‑wetted state (fully water‑wet is most desirable for cement bonding).
Method and apparatus
- Continuous measurement of electrical conductivity between electrodes. The test infers emulsion state and wettability when the titrant spacer is conductive and the titrated drilling fluid is non‑conductive (oil‑external).
- Typical sample volume: ~500 ml per test.
- Test limited to atmospheric pressure and temperatures ≤ 90 °C (194 °F). For conditioning above 90 °C, use HTHP equipment and cool below 90 °C before depressurizing.
Sample preparation and procedure
- Prepare mud per supplier instructions; condition spacer fluids to anticipated BHCT (Bottom Hole Circulating Temperature).
- Slowly titrate conductive spacer into non‑conductive mud while stirring; monitor conductivity until a stable reading indicates a water‑continuous phase (water‑wet).
- Report results as volume percentage V = Vs / (Vs + Vm) × 100, where Vs = volume of spacer required and Vm = initial mud volume (example: 150 ml spacer + 200 ml mud → 43%).
Safety
- Follow laboratory safety for oil/synthetic/solvent fluids; observe flash points, ventilation, and handling procedures.

Applications and users

Used by drilling and cementing engineers, mud engineers, laboratory testing services, oilfield service companies, and well integrity specialists to:
- Select appropriate preflushes, spacers, or surfactant components before cementing.
- Demonstrate the ability of spacer systems to restore water‑wet surfaces after oil‑based drilling fluids.
- Support cement bond quality assurance and reduce gas migration risks.

Related standards

This amendment is part of ISO 10426‑2 (Testing of well cements), prepared by ISO/TC 67 (materials and equipment for petroleum and natural gas industries). Users should consult the main ISO 10426‑2 document for full cement testing methods and requirements.

Keywords: well cementing, water‑wetting capability, WWCT, spacer testing, preflush, oil‑based drilling fluids, cement bonding, ISO 10426‑2, EN ISO 10426‑2:2003/A1:2005.

EN ISO 10426-2:2003/A1:2005 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

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