EN ISO 13500:2008/A1:2010

• Status: Published
• Publication Date: 30-Nov-2010
• Withdrawal Date: 29-Jun-2011
• 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: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Dec-2010
• Completion Date: 01-Dec-2010
• Ref Project: SIST EN ISO 13500:2009/A1:2014 - Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests - Amendment 1: Barite 4,1 (ISO 13500:2008/AMD 1:2010)

• Consolidated By: ISO 13500:2008/Amd 1:2010 - Petroleum and natural gas industries — Drilling fluid materials — Specifications and tests — Amendment 1: Barite 4,1
• Effective Date: 12-Feb-2026
• Amends: EN ISO 13500:2008 - Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests (ISO 13500:2008)
• Effective Date: 17-Oct-2009

Overview

EN ISO 13500:2008/A1:2010 (issued by CEN as EN ISO 13500:2008/A1) is a European adoption of ISO 13500:2008 Amendment 1 (2010) that adds a new product class - Barite 4,1 - to the existing standard for drilling fluid materials. The amendment defines physical and chemical specifications, sampling and test methods for Barite 4,1 used in petroleum and natural gas drilling fluids and supplements, but does not replace the original Barite requirements in Clause 7. It also aligns with the related API Specification 13A amendment.

Key topics and requirements

• Scope: Specification and test methods specific to the newly available drilling product Barite 4,1 as an alternative to Clause 7 barite.
• Critical physical and chemical requirements (Table 19):
  • Density: minimum 4.10 g/ml
  • Water‑soluble alkaline earth metals (as Ca): maximum 250 mg/kg
  • Residue > 75 µm: maximum 3.0 % by mass
  • Particles < 6 µm (equivalent spherical): maximum 30 % by mass
• Sampling and conformity: a composite sample representing up to one day's production is acceptable if it conforms to Table 19 and is manufacturer-controlled.
• Test methods described (examples from the amendment):
  • Density measurement using a Le Chatelier flask and controlled-temperature bath (detailed procedure and calculation).
  • Water‑soluble alkaline earth metals determined by extraction and EDTA titration (reagents, apparatus and procedure specified).
  • References to apparatus and methods such as low-pressure/low-temperature filter press per ISO 10414-1:2008.
• Important advisories:
  • Barite 4,1 has a lower density than Clause 7 barite; it is not intended for performance testing, calibration standards, or to replace Clause 7 products.
  • End users must adjust drilling fluid formulations and engineering calculations to account for lower maximum achievable mud densities.

Applications and who uses it

• Intended users:
  • Barite producers and refiners for product specification and certification.
  • Quality control laboratories performing acceptance and routine testing.
  • Mud engineers, drilling fluid specialists and drilling contractors adjusting formulations and density targets.
  • Procurement, standards and regulatory bodies specifying materials for well operations.
• Practical use:
  • Defining acceptance criteria for barite shipments.
  • Ensuring consistent drilling-fluid weighting agents that meet chemical compatibility and particle-size distributions.
  • Informing drilling-fluid design when lower-density weighting materials are employed.

Related standards

• ISO 13500:2008 (Clause 7) - original barite specifications and tests.
• API Specification 13A - amendment correspondence noted in the document.
• ISO 10414-1:2008 - referenced for filter press requirements.

Keywords: EN ISO 13500:2008/A1:2010, Barite 4,1, drilling fluid materials, barite specifications, density test, Le Chatelier flask, water‑soluble alkaline earth metals, particle size, API 13A.

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Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests -
Amendment 1: Barite 4,1 (ISO 13500:2008/AMD 1:2010)
Erdöl- und Erdgasindustrie - Bohrspülungen - Spezifikationen und Prüfungen - Änderung
A1: Barite 4.10 (ISO 13500:2008/AMD 1:2010)
Industries du pétrole et du gaz naturel - Produits pour fluides de forage - Spécifications
et essais - Amendement 1: Baryte 4,1 (ISO 13500:2008/AMD 1:2010)
Ta slovenski standard je istoveten z: EN ISO 13500:2008/A1:2010
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 13500:2008/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2010
ICS 75.180.10
English Version
Petroleum and natural gas industries - Drilling fluid materials -
Specifications and tests - Amendment 1: Barite 4,1 (ISO
13500:2008/AMD 1:2010)
Industries du pétrole et du gaz naturel - Produits pour Erdöl- und Erdgasindustrie - Bohrspülungen -
fluides de forage - Spécifications et essais - Amendement Spezifikationen und Prüfungen - Änderung A1: Barite 4.10
1: Baryte 4,1 (ISO 13500:2008/AMD 1:2010) (ISO 13500:2008/AMD 1:2010)
This amendment A1 modifies the European Standard EN ISO 13500:2008; it was approved by CEN on 13 November 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13500:2008/A1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 13500:2008/A1:2010) 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 June 2011, and conflicting national standards shall be withdrawn at
the latest by June 2011.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 13500:2008/A1:2010 has been approved by CEN as a EN ISO 13500:2008/A1:2010 without
any modification.
INTERNATIONAL ISO
STANDARD 13500
Third edition
2008-11-01
AMENDMENT 1
2010-12-01
Petroleum and natural gas industries —
Drilling fluid materials — Specifications
and tests
AMENDMENT 1: Barite 4,1
Industries du pétrole et du gaz naturel — Produits pour fluides
de forage — Spécifications et essais
AMENDEMENT 1: Baryte 4,1
Reference number
ISO 13500:2008/Amd.1:2010(E)
©
ISO 2010
ISO 13500:2008/Amd.1:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 13500:2008/Amd.1:2010(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.
Amendment 1 to ISO 13500:2008 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.
1)
Amendment 1 to ISO 13500:2008 covers the physical properties and testing of the newly available drilling
2 )
fluid product, Barite 4,1. It constitutes an alternative to the specifications of Clause 7 , which cover the
physical properties and testing of Barite, and is not intended to replace Clause 7.

1) Amendment 1 to ISO 13500:2008 also constitutes Amendment 1 to API Specification 13A.
2) ISO 13500:2008, Clause 7, is equivalent to API Specification 13A, Section 7.
ISO 13500:2008/Amd.1:2010(E)
Petroleum and natural gas industries — Drilling fluid
materials — Specifications and tests
AMENDMENT 1: Barite 4,1
Page 82
Add the following new clause immediately after Subclause 19.8.3.
20 Barite 4,1
20.1 Principle
20.1.1 Drilling grade barite is produced from commercial barium sulfate-containing ores. The manufacturer
shall retain certificates of analysis or similar documentation on these commercial barium sulfate ores. It may
be produced from a single ore or a blend of ores and may be a straight-mined product or processed by
beneficiation methods, i.e. washing, tabling, jigging, or flotation. It may contain accessory minerals other than
the barium sulfate (BaSO ) mineral. Because of mineral impurities, commercial barite may vary in colour from
off-white to grey to red or brown. Common accessory minerals are silicates such as quartz and chert,
carbonate compounds such as siderite and dolomite, and metallic oxide and sulfide compounds. Although
these minerals are normally insoluble, they can, under certain conditions, react with other components in
some types of drilling fluids and cause adverse changes in the drilling fluid properties. (See Annex A for more
details.)
20.1.2 Drilling grade barium sulfate meeting the Barite 4,1 physical and chemical specifications listed in
Table 19 is not intended to meet the requirements of performance tests described in ISO and API publications.
Additionally, it is not intended to be used as a reference or calibration material as specified in ISO and API
publications.
20.1.3 End users should be aware that the material described in this clause has a lower density than Barite
as specified in Clause 7. Drilling fluid formulations should be developed to accommodate this lower density
material. Maximum practical drilling fluid density for specific formulations may be lower than attainable with
Barite as specified in Clause 7.
20.1.4 End users should review fluid engineering calculations to determine where density differences
between Barite 4,1, as specified in this clause, and Barite, as specified in Clause 7, will require revisions to
these calculations.
20.1.5 Barite 4,1 shall be deemed to meet the requirements of this International Standard if a composite
sample representing no more than one day's production conforms to the chemical and physical specifications
of Table 19, represents the product produced, and is controlled by the manufacturer.
ISO 13500:2008/Amd.1:2010(E)
Table 19 — Barite 4,1 physical and chemical requirements
Requirement Standard
Density 4,10 g/ml, minimum
Water-soluble alkaline earth metals, as calcium 250 mg/kg, maximum
Residue greater than 75 μm Maximum mass fraction, 3,0 %
Particles less than 6 μm in equivalent spherical diameter Maximum mass fraction, 30 %

20.2 Reagents and apparatus — Density by Le Chatelier flask
20.2.1 Kerosene or mineral spirits.
20.2.2 Oven, regulated to 105 °C ± 3 °C (220 °F ± 5 °F).
20.2.3 Desiccator, with calcium sulfate (CAS No. 7778-18-9) desiccant or equivalent.
20.2.4 Le Chatelier flask, with graduations of 0,1 ml, clamped or weighted to prevent flotation in water bath.
20.2.5 Constant-temperature bath, transparent at 32 °C ± 0,5 °C regulated to ±0,1 °C (90 °F ± 1,0 °F
regulated to ±0,2 °F) [e.g. approximately 40 l aquarium (fish tank) with heater/circulator attachment, or
functional equivalent].
20.2.6 Balance, with an accuracy of 0,01 g.
20.2.7 Pipette, volumetric, of 10 ml capacity.
20.2.8 Magnifying glass.
20.2.9 Dowel, wooden, approximately 8 mm (1/3 in) in diameter and 30 cm (12 in) in length, or a functional
equivalent.
20.2.10 Tissue paper, absorbent.
NOTE Laboratory grade tissues are non-absorbent and thus unsuitable for use in this test procedure.
20.2.11 Weighing dish, low-form, with spout, of approximately 100 ml capacity, or a functional equivalent.
20.2.12 Brush, small, fine bristle.
20.3 Procedure — Density by Le Chatelier flask
20.3.1 Take approximately 100 g of Barite 4,1 which has been oven dried for at least 2 h and cooled to room
temperature in a desiccator.
20.3.2 Fill a clean Le Chatelier flask to approximately 20 mm (0,8 in) below the zero mark with kerosene.
20.3.3 Place the flask upright in the constant-temperature bath. The level of water in the bath shall be higher
than the 24 ml graduation of the flask, but below the stopper level. Ensure flask is stabilized by use of clamps
or weights.
20.3.4 Allow the flask and contents to equilibrate for a minimum of 1 h. Using the magnifying glass with care
to keep eyes at meniscus level, read the volume at the lowest portion of the curved interface, and record the
initial volume to the nearest 0,05 ml without removing the flask from the constant-temperature bath. Record as
V .
2 © ISO 2010 – All rights reserved

ISO 13500:2008/Amd.1:2010(E)
If the kerosene level is above or below the −0,2 ml to +1,2 ml volume range after equilibrating, use the 10 ml
pipette to add or remove kerosene in order for it to come within this range. Allow the flask to equilibrate for at
least 1 h and record the initial volume as in 20.3.4.
20.3.5 Remove the Le Chatelier flask from the bath, wipe dry, and remove the stopper. Roll several lengths
of tissue paper diagonally along the length of the dowel, and use this assembly as a swab to dry the inside
neck of the flask. Do not allow the swab to come into contact with the kerosene in the flask.
20.3.6 Weigh 80 g ± 0,05 g dried Barite 4,1 into the weighing dish and carefully transfer to the Le Chatelier
flask. Take care to avoid splashing the kerosene or plugging the flask with Barite 4,1 at the bulb. This is a slow
process, requiring repeated transfers of small amounts of Barite 4,1. Use a brush to transfer any residual
Barite 4,1 into the flask, then replace the stopper. Record the mass as m.
20.3.7 If necessary, carefully tap the neck of the flask with the wooden dowel, or agitate carefully from side to
side, to dislodge any Barite 4,1 clinging to the walls. Do not allow kerosene to come into contact with the
ground glass stopper joint of the flask.
20.3.8 Gently roll the flask along a smooth surface at no more than 45° from vertical, or twirl the upright flask
at the neck vigorously between the palms of both hands, to remove entrained air from the Barite 4,1 sample.
Repeat this procedure until no more bubbles can be seen rising from the Barite 4,1.
20.3.9 Return the flask to the bath and let stand for at least 0,5 h.
20.3.10 Remove the flask from the bath and repeat 20.3.8 to remove any remaining air from the Barite 4,1
sample.
20.3.11 Immerse the flask in the bath again for at least 1 h.
20.3.12 Record the final volume in the same manner as described in 20.3.4. Record the volume as V .
20.4 Calculation — Density by Le Chatelier flask
Calculate the density, ρ, in grams per millilitre, according to Equation (53):
m
ρ= (53)
VV−
()
where
m is the sample mass, expressed in grams;
V is the initial v
...