EN ISO 13503-6:2014

SLOVENSKI STANDARD
01-julij-2014
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Petroleum and natural gas industries - Completion fluides and materials - Part 6:
Procedure for measuring leakoff of completion fluids under dynamic conditions (ISO
13503-6:2014)
Erdöl- und Erdgasindustrie - Komplettierungsflüssigkeiten und -materialien - Teil 6:
Verfahren zur Messung des Fluidverlustes von Komplettierungsflüssigkeiten unter
dynamischen Bedingungen (ISO 13503-6:2014)
Industries du pétrole et du gaz naturel - Fluides de complétion et matériaux - Partie 6:
Mode opératoire pour le mesurage de la perte de fluide de complétion sous conditions
dynamiques (ISO 13503-6:2014)
Ta slovenski standard je istoveten z: EN ISO 13503-6:2014
ICS:
75.100 Maziva Lubricants, industrial oils and
related products
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 13503-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2014
ICS 75.100
English Version
Petroleum and natural gas industries - Completion fluides and
materials - Part 6: Procedure for measuring leakoff of completion
fluids under dynamic conditions (ISO 13503-6:2014)
Industries du pétrole et du gaz naturel - Fluides de Erdöl- und Erdgasindustrie - Komplettierungsflüssigkeiten
complétion et matériaux - Partie 6: Mode opératoire pour le und -materialien - Teil 6: Verfahren zur Messung des
mesurage de la perte de fluide par filtration en conditions Fluidverlustes von Komplettierungsflüssigkeiten unter
dynamiques des fluides de complétion (ISO 13503-6:2014) dynamischen Bedingungen (ISO 13503-6:2014)
This European Standard was approved by CEN on 27 October 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13503-6:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 13503-6:2014) has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum, petrochemical and natural gas industries" in collaboration
with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum,
petrochemical and natural gas industries” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2014, and conflicting national standards shall be
withdrawn at the latest by September 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 13503-6:2014 has been approved by CEN as EN ISO 13503-6:2014 without any modification.

INTERNATIONAL ISO
STANDARD 13503-6
First edition
2014-03-15
Petroleum and natural gas
industries — Completion fluids and
materials —
Part 6:
Procedure for measuring leakoff of
completion fluids under dynamic
conditions
Industries du pétrole et du gaz naturel — Fluides de complétion et
matériaux —
Partie 6: Mode opératoire pour le mesurage de la perte de fluide par
filtration en conditions dynamiques des fluides de complétion
Reference number
ISO 13503-6:2014(E)
©
ISO 2014
ISO 13503-6:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 13503-6:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Terms and definitions . 1
3  Cell type. 2
4  Identification of test parameters (linear flow cells) . 3
4.1 General . 3
4.2 Temperature . 3
4.3 Pressure . 4
4.4 Test duration . 4
4.5 Shear rate . 4
4.6 Permeability . 4
4.7 Fluid shear-history simulator (optional) . 4
4.8 Heat-up rate . 4
5 Test procedure . 4
5.1 Core preparation . 4
5.2 Round cell . 5
5.3 Proppant conductivity cell . 5
6 Calculations. 6
6.1 Shear rate . 6
6.2 Leakoff coefficients. 6
7 Calculation examples . 8
7.1 Round cell — Linear gel . 8
7.2 Round cell — Crosslinked gel .10
7.3 Proppant conductivity cell — Crosslinked gel .11
8 Report .12
Bibliography .14
ISO 13503-6:2014(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13503-6 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 3, Drilling and
completion fluids, and well cements.
ISO 13503 consists of the following parts, under the general title Petroleum and natural gas industries —
Completion fluids and materials:
— Part 1: Measurement of viscous properties of completion fluids
— Part 2: Measurement of properties of proppants used in hydraulic fracturing and gravel-packing
operations
— Part 3: Testing of heavy brines
— Part 4: Procedure for measuring stimulation and gravel-pack fluid leakoff under static conditions
— Part 5: Procedures for measuring the long-term conductivity of proppants
— Part 6: Procedure for measuring leakoff of completion fluids under dynamic conditions
iv © ISO 2014 – All rights reserved

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