prEN ISO 13503-5

• Abstract:

  ISO 13503-5:2006 provides standard testing procedures for evaluating proppants used in hydraulic fracturing and gravel packing operations. ISO 13503-5:2006 provides a consistent methodology for testing performed on hydraulic fracturing and/or gravel packing proppants. The "proppants" mentioned henceforth in this part of ISO 13503-5:2006 refer to sand, ceramic media, resin-coated proppants, gravel packing media, and other materials used for hydraulic fracturing and gravel-packing operations.; ISO 13503-5:2006 is not applicable for use in obtaining absolute values of proppant pack conductivities under downhole reservoir conditions.

• Status: Not Published
• Publication Date: 29-Nov-2027
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: ISO/TC 67 - ISO/TC 67
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 28-Jul-2026
• Completion Date: 28-Jul-2026
• Ref Project: oSIST prEN ISO 13503-5:2026 - Oil and gas industries including lower carbon energy - Completion fluids and materials - Part 5: Measuring conductivity of proppants (ISO/DIS 13503-5:2026)

• Revises: EN ISO 13503-5:2006 - Petroleum and natural gas industries - Completion fluids and materials - Part 5: Procedures for measuring the long-term conductivity of proppants (ISO 13503-5:2006)
• Effective Date: 18-Feb-2026

Overview

prEN ISO 13503-5:2026 specifies standard testing procedures for measuring the conductivity of proppants used in the oil and gas industries, including lower carbon energy applications. Proppants-such as sand, ceramic, resin-coated materials, and media used in gravel packing-are essential for maintaining fractures or wellbore stability during hydraulic fracturing and gravel packing operations. This standard ensures a consistent methodology for evaluating the performance characteristics of these critical materials. It supplements the requirements of API RP 19D, 2nd edition (2021), and focuses on laboratory testing procedures, providing updates and clarifications to support evolving industry needs.

Key Topics

• Scope and Purpose

  • Provides standardized laboratory procedures for evaluating proppant conductivity in hydraulic fracturing and gravel packing.
  • Applicable to a broad range of proppant materials, including sand, ceramics, resin-coated proppants, and gravel.
  • Not for determining absolute conductivity values under actual downhole reservoir conditions.

• Integration with API RP 19D

  • Supplements and references API RP 19D, 2nd edition (2021).
  • Introduces changes in sample preparation, loading procedures, and stress application for test accuracy and repeatability.

• Testing Methodology

  • Establishes practical steps for loading, leveling, and pressurizing proppant samples to ensure consistent test results.
  • Specifies use of a modified leveling device for even distribution in testing cells.
  • Details on stress rates and stages for accurate simulation of operational conditions.

• Data Acquisition and Interpretation

  • Procedures for incremental stress application and monitoring conductivity.
  • Guidance on holding times and stress points to capture accurate trends of proppant pack performance.

Applications

The procedures outlined in prEN ISO 13503-5:2026 are widely used in the oil and gas sector, particularly where hydraulic fracturing and gravel packing are essential for well completion. The standard:

• Supports Material Selection

  • Enables operators and service providers to assess and compare the performance of various proppant materials before deployment.
  • Helps optimize proppant selection for enhanced well productivity and longevity.

• Facilitates Consistency Across Projects

  • Provides a harmonized approach to proppant conductivity testing, ensuring data comparability across laboratories, manufacturers, and operators globally.

• Aids Low Carbon and Energy Transition Projects

  • Applies to both traditional hydrocarbon and lower carbon energy wells, including those designed for CO₂ storage or alternative energy extraction.

• Enhances Technical Communication

  • Used by laboratory technicians, materials engineers, and quality assurance professionals to align testing protocols with international best practices.

Related Standards

• API RP 19D, 2nd edition (2021)

  • The foundational reference for proppant conductivity testing, closely integrated with prEN ISO 13503-5.

• ISO 13503 Series

  • Other parts cover terminology, test methods for fracturing fluids, and properties of completion materials.

• ICS 75.100 - Lubricants, industrial oils, and related products

  • Relevant for those involved in well operations and maintenance materials.

• ICS 75.180.10 - Exploratory, drilling and extraction equipment

  • Covers equipment used alongside proppant and fluid testing in energy operations.

By adhering to prEN ISO 13503-5:2026, industry stakeholders benefit from standardized testing procedures for proppant conductivity, supporting safer, more efficient, and sustainable reservoir management and completion design.

SLOVENSKI STANDARD
01-julij-2026
Naftna in plinska industrija, vključno z nizkoogljično energijo - Tekočine in
materiali za zaključna dela - 5. del: Merjenje prevodnosti podpornih materialov
(ISO/DIS 13503-5:2026)
Oil and gas industries including lower carbon energy - Completion fluids and materials -
Part 5: Measuring conductivity of proppants (ISO/DIS 13503-5:2026)
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger -
Komplettierungsflüssigkeiten und Materialien - Teil 5: Messung der Leitfähigkeit von
Stützmaterialien (ISO/DIS 13503-5:2026)
Titre manque — Partie 5: Titre manque
Ta slovenski standard je istoveten z: prEN ISO 13503-5
ICS:
75.100 Maziva Lubricants, industrial oils and
related products
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 13503-5
ISO/TC 67/SC 3
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Completion
Voting begins on:
fluids and materials —
2026-05-05
Part 5:
Voting terminates on:
2026-07-28
Measuring conductivity of
proppants
ICS: 75.100; 75.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 13503-5:2026(en)
DRAFT
ISO/DIS 13503-5:2026(en)
International
Standard
ISO/DIS 13503-5
ISO/TC 67/SC 3
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Completion
Voting begins on:
fluids and materials —
Part 5:
Voting terminates on:
Measuring conductivity of
proppants
ICS: 75.100; 75.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 13503-5:2026(en)
ii
ISO/DIS 13503-5:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Supplements to API RP 19D, 2nd edition (2021) . 1
3.1 General requirements .1
3.2 Procedure for Loading the Cell(s) .1
3.2.1 Loading Dry Proppant into the Cell(s) .1
3.2.2 Loading Cell(s) in the Load Frame .3
3.3 Acquiring Data .3
Bibliography . 4

iii
ISO/DIS 13503-5:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect
...