SIST EN ISO 13503-6:2014
(Main)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)
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)
EN ISO 13503-6 provides consistent methodology for measuring the fluid loss of completion fluids under dynamic conditions. This part of ISO 13503 is applicable to all completion fluids except those that react with porous media.
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)
ISO 13503:2014 présente une méthodologie cohérente pour le mesurage, en conditions dynamiques, de la perte de fluide par filtration des fluides de complétion. Cette partie de l'ISO 13503 s'applique à tous les fluides de complétion, excepté ceux qui réagissent avec le milieu poreux.
Industrija za predelavo nafte in zemeljskega plina - Tekočine in materiali za zaključna dela - 6. del: Postopek za merjenje uhajanja tekočin v dinamičnih pogojih (ISO 13503-6:2014)
EN ISO 13503-6 zagotavlja dosledno metodologijo za merjenje uhajanja tekočin v dinamičnih pogojih. Ta del ISO 13503 velja za vse tekočine za zaključna dela, razen tistih, ki reagirajo s poroznimi sredstvi.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 13503-6:2014
01-julij-2014
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD7HNRþLQHLQPDWHULDOL]D
]DNOMXþQDGHODGHO 3RVWRSHN]DPHUMHQMHXKDMDQMDWHNRþLQYGLQDPLþQLK
SRJRMLK ,62
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
SIST EN ISO 13503-6:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 13503-6:2014
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SIST EN ISO 13503-6:2014
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.
---------------------- Page: 3 ----------------------
SIST EN ISO 13503-6:2014
EN ISO 13503-6:2014 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 13503-6:2014
EN ISO 13503-6:2014 (E)
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.
3
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SIST EN ISO 13503-6:2014
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SIST EN ISO 13503-6:2014
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
---------------------- Page: 7 ----------------------
SIST EN ISO 13503-6:2014
ISO 13503-6:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 13503-6:2014
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 2014 – All rights reserved iii
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SIST EN ISO 13503-6:2014
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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SIST EN ISO 13503-6:2014
ISO 13503-6:2014(E)
Introduction
The objective of this part of ISO 13503 is to provide a procedure for measuring fluid loss (leakoff) under
dynamic conditions. This procedure was compiled on the basis of several years of comparative testing,
debate, discussion and continued research by the industry.
Dynamic fluid loss testing consists of a simulation of the circulation process where completion fluid
loss occurs at a core face with appropriate shear conditions. Under dynamic conditions, the filter cake
deposition and fluid loss behaviour are different to those of fluid loss under static conditions.
Laboratory leakoff tests have shown that there is a dynamic effect for low-permeability formations,
i.e. < 1,0 mD. This is due to the fact
...
SLOVENSKI STANDARD
oSIST prEN ISO 13503-6:2011
01-junij-2011
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD7HNRþLQHLQPDWHULDOL]D
]DNOMXþQDGHODGHO 3RVWRSHN]DPHUMHQMHXKDMDQMDWHNRþLQYGLQDPLþQLK
SRJRMLK ,62',6
Petroleum and natural gas industries - Completion fluids and materials - Part 6:
Procedure for measuring leakoff of completion fluids under dynamic conditions (ISO/DIS
13503-6:2011)
Erdöl- und Erdgasindustrie - Komplettierungsflüssigkeiten und -materialien - Teil 6:
Verfahren zur Messung des Fluidverlustes von Komplettierungsflüssigkeiten unter
dynamischen Bedingungen (ISO/DIS 13503-6:2011)
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/DIS 13503-6:2011)
Ta slovenski standard je istoveten z: prEN ISO 13503-6
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
oSIST prEN ISO 13503-6:2011 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 13503-6:2011
---------------------- Page: 2 ----------------------
oSIST prEN ISO 13503-6:2011
EUROPEAN STANDARD
DRAFT
prEN ISO 13503-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
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/DIS 13503-
6:2011)
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 de complétion sous Fluidverlustes von Komplettierungsflüssigkeiten unter
conditions dynamiques (ISO/DIS 13503-6:2011) dynamischen Bedingungen (ISO/DIS 13503-6:2011)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 12.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 13503-6:2011: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN ISO 13503-6:2011
prEN ISO 13503-6:2011 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
oSIST prEN ISO 13503-6:2011
prEN ISO 13503-6:2011 (E)
Foreword
This document (prEN ISO 13503-6:2011) 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 document is currently submitted to the parallel Enquiry.
Endorsement notice
The text of ISO/DIS 13503-6:2011 has been approved by CEN as a prEN ISO 13503-6:2011 without any
modification.
3
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oSIST prEN ISO 13503-6:2011
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oSIST prEN ISO 13503-6:2011
DRAFT INTERNATIONAL STANDARD ISO/DIS 13503-6
ISO/TC67/SC 3 Secretariat: SN
Voting begins on Voting terminates on
2011-04-21 2011-09-21
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Petroleum and natural gas industries — Completion fluides 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 de complétion sous conditions dynamiques
ICS 75.100
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est
distribué en version anglaise seulement.
To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO 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.
© International Organization for Standardization, 2011
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oSIST prEN ISO 13503-6:2011
ISO/DIS 13503-6
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2011 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 13503-6:2011
ISO/CD 13503-6
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Terms and definitions . 1
3 Cell type . 2
4 Identify test parameters (linear flow cells) . 3
4.1 General . 3
4.2 Temperature . 3
4.2.1 Test temperature . 3
4.2.2 Fluid temperature . 3
4.2.3 Cell temperature . 3
4.3 Pressure . 4
4.3.1 Test pressure . 4
4.3.2 Fluid pressure . 4
4.3.3 Backpressure . 4
4.3.4 Confining 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 . 5
5.1 Core preparation . 5
5.2 Round cell . 6
5.2.1 Prepare a core with a minimum dimension of 25.4 mm in long by 25.4 mm in diameter . 6
5.2.2 Measure liquid permeability of the saturated core . 6
5.2.3 Prepare test fluid (for example: according to the ISO 13503-1) . 6
5.2.4 Set the back pressure, typically 690 KPa (100 psi) or greater, to satisfy a desired pressure
differential across the core during the test (for example: a minimum of 6900 KPa (1000
psi) pressure differential for test on low permeability cores). 6
5.2.5 Heat the cell to test temperature . 6
5.2.6 Fluid should enter and exit the cell in a uniform flow regime, minimizing entrance and exit
effects. The distance between the core face and any loop curvature before fluid enters or
exits the cell should be at least 2.5 times the diameter of the loop. . 6
5.2.7 Initialize flow across the core face at the desired shear rate with the leakoff valve closed . 6
5.2.8 Monitor fluid temperature, fluid rate, pressure differential and fluid properties such as pH
and viscosity before it enters cell . 6
5.2.9 Open the leakoff valve and start collecting fluid leakoff data at a minimum frequency of
one data point per minute for at least 36 minutes (according to 13503-4) . 6
5.3 Proppant conductivity cell. 6
5.3.1 Prepare cores to fit the proppant conductivity cell with a minimum of 9.5 mm (3/8 in)
thickness . 6
5.3.2 Measure liquid permeability of the saturated core . 6
5.3.3 Prepare test fluid (for example according to the ISO 13503-1) . 6
5.3.4 Set the back pressure, typically 100 psi or greater, to satisfy a desired pressure
differential across the core during the test (for example: a minimum of 1000 psi pressure
differential for test on low permeability cores) . 6
5.3.5 Heat the cell to test temperature . 6
5.3.6 Initialize flow across the core face at the desired shear rate with the leakoff valve closed . 6
© ISO 2010 – All rights reserved iii
DRAFT 2011
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oSIST prEN ISO 13503-6:2011
ISO/CD 13503-6
5.3.7 Monitor fluid temperature, fluid rate, pressure differential and fluid properties such as pH
and viscosity before it enters cell .7
5.3.8 Open the leakoff valve and start collecting fluid leakoff data at a minimum frequency of
one data point per minute for at least 36 minutes . Feil! Bokmerke er ikke definert.
6 Calculations .7
7 Example calculations - round cell .
8 Report .
iv © ISO 2010 – All rights reserved
DRAFT 2011
---------------------- Page: 10 ----------------------
oSIST prEN ISO 13503-6:2011
ISO/CD 13503-6
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.
ISO 13503-6 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structure
for the 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: Petroleum and natural gas industries – Completion fluids and materials – Measurement of viscous
properties of completion fluids
Part 2: Petroleum and natural gas indus
...
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