SIST EN ISO 13503-3:2006

SLOVENSKI STANDARD
SIST EN ISO 13503-3:2006
01-september-2006
Industrija za predelavo nafte in zemeljskega plina – Tekočine in materiali za
zaključna dela – 3. del: Preskušanje težkih slanic (ISO 13503-3:2005)
Petroleum and natural gas industries - Completion fluids and materials - Part 3: Testing
of heavy brines (ISO 13503-3:2005)
Erdöl- und Erdgasindustrie - Komplettierungsflüssigkeiten und -materialien - Teil 3:
Prüfung von schweren Solen (ISO 13503-3:2005)
Industries du pétrole et du gaz naturel - Fluides et matériaux de complétion - Partie 3:
Essais de saumures denses (ISO 13503-3:2005)
Ta slovenski standard je istoveten z: EN ISO 13503-3:2005
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 13503-3:2006 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 13503-3:2006

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SIST EN ISO 13503-3:2006
EUROPEAN STANDARD
EN ISO 13503-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 75.100

English Version
Petroleum and natural gas industries - Completion fluids and
materials - Part 3: Testing of heavy brines (ISO 13503-3:2005)
Industries du pétrole et du gaz naturel - Fluides et Erdöl- und Erdgasindustrie - Komplettierungsflüssigkeiten
matériaux de complétion - Partie 3: Essais de saumures und -materialien - Teil 3: Prüfung von schweren Solen (ISO
denses (ISO 13503-3:2005) 13503-3:2005)
This European Standard was approved by CEN on 9 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13503-3:2005: E
worldwide for CEN national Members.

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SIST EN ISO 13503-3:2006

EN ISO 13503-3:2005 (E)





Foreword


This document (EN ISO 13503-3:2005) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum 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 2006, and conflicting national
standards shall be withdrawn at the latest by June 2006.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 13503-3:2005 has been approved by CEN as EN ISO 13503-3:2005 without any
modifications.

2

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SIST EN ISO 13503-3:2006


INTERNATIONAL ISO
STANDARD 13503-3
First edition
2005-12-15


Petroleum and natural gas industries —
Completion fluids and materials —
Part 3:
Testing of heavy brines
Industries du pétrole et du gaz naturel — Fluides et matériaux de
complétion —
Partie 3: Essais de saumures denses





Reference number
ISO 13503-3:2005(E)
©
ISO 2005

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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
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©  ISO 2005
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ii © ISO 2005 – All rights reserved

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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms and definitions. 2
3.2 Symbols and abbreviated terms . 2
4 Requirements . 4
4.1 Quality control instructions. 4
4.2 Records retention . 4
5 Calibration of equipment . 4
5.1 General requirements. 4
5.2 Reagents and materials for calibration . 4
5.3 General requirements for calibration of particular apparatus . 5
5.4 Frequency of calibration verification. 5
5.5 Calibration verification. 6
6 Density . 7
6.1 General. 7
6.2 Apparatus . 9
6.3 Density measurement by hydrometer . 10
6.4 Density correction to 21 °C (70 °F). 11
3
6.5 Calculation of density in units other than kg/m . 13
6.6 Calculation for pressure and temperature compensation. 14
7 Crystallization temperature . 16
7.1 Principle. 16
7.2 Apparatus . 20
7.3 Determination of crystallization point . 21
7.4 Calculation of crystallization point . 21
8 Brine clarity . 22
8.1 Principle. 22
8.2 Apparatus . 22
8.3 Determination of brine clarity. 23
9 Solids evaluation by gravimetric procedures. 23
9.1 Principle. 23
9.2 Apparatus . 24
9.3 Preparation of glass-fibre filter disk . 24
9.4 Selection of sample volume . 25
9.5 Determination of total suspended solids .25
9.6 Calculation of total suspended solids. 26
9.7 Calculation of precision and bias . 26
9.8 Determination of volatile and non-volatile solids. 26
9.9 Calculation of non-volatile and volatile solids . 27
10 pH . 27
10.1 Principle. 27
10.2 Reagents and materials . 28
10.3 Apparatus . 28
10.4 Measurement of pH. 29
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
10.5 Precision statement . 30
10.6 Care of the electrode . 30
11 Iron contamination. 30
11.1 Principle . 30
11.2 Reagents and materials. 31
11.3 Apparatus. 31
11.4 Preparation of colorimetric standards. 32
11.5 Measurement of iron contamination . 32
11.6 Precision statement . 33
12 Daily completion fluid report . 33
12.1 Principle . 33
12.2 Well identification, geometry and zone data. 34
12.3 System properties. 34
12.4 Fluids accounting . 35
12.5 Cost accounting . 35
12.6 Daily commentary . 35
12.7 Vendor representative identification. 35
Annex A (informative) Completion fluids report form. 36
Annex B (informative) Gas hydrates. 37
Annex C (informative) Buffering capacity of brines. 38
Annex D (informative) Pressure crystallization of brines. 39
Annex E (informative) Brine viscosity . 40
Annex F (informative) Principle of corrosion testing. 41
Bibliography . 43

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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(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 13503-3 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 3: Testing of heavy brines
The following parts are under preparation:
⎯ Part 2: Measurement of properties of proppants used in hydraulic fracturing and gravel packing
operations
⎯ Part 4: Procedure for measuring stimulation and gravel-pack fluid leakoff under static conditions
⎯ Part 5: Procedure for measuring the long-term conductivity of proppants
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
Introduction
This part of ISO 13503 covers heavy brines commonly used in petroleum and natural gas completion,
workover and drill-in fluids. These brines can be purchased or rented from multiple sources, and are available
worldwide. No single source or limited source of supply is included, either by inference or reference.
Annexes A to F are given for information.

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SIST EN ISO 13503-3:2006
INTERNATIONAL STANDARD ISO 13503-3:2005(E)

Petroleum and natural gas industries — Completion fluids
and materials —
Part 3:
Testing of heavy brines
1 Scope
This part of ISO 13503 covers the physical properties, potential contaminants and test procedures for heavy
brine fluids manufactured for use in oil and gas well drilling, completion and workover fluids.
This part of ISO 13503 provides methods for assessing the performance and physical characteristics of heavy
brines for use in field operations. It includes procedures for evaluating the density or specific gravity, the clarity
or amount of particulate matter carried in the brine, the crystallization point or the temperature (both ambient
and under pressure) at which the brines make the transition between liquid and solid, the pH, and iron
contamination.
It also contains a discussion of gas hydrate formation and mitigation, brine viscosity, corrosion testing,
buffering capacity and a standardised reporting form.
This part of ISO 13503 is intended for the use of manufacturers, service companies and end-users of heavy
brines.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments applies).
ISO 10414-1:2001, Petroleum and natural gas industries — Field testing of drilling fluids — Part 1:
Water-based fluids
1)
ASTM E77, Standard Test Method for Inspection and Verification of Thermometers
2)
NIST SRM 185h, Potassium Hydrogen Phthalate, pH Standard
NIST SRM 186g, Potassium Dihydrogen Phosphate, pH Standard
NIST SRM 191C, pH Standards
NBS (NIST) Circular 555, Testing of Hydrometers, 22 Oct 1954

1) ASTM, American Society for Testing and Materials, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken,
PA 19428-2959, USA. http://www.astm.org.
2) NIST, National Institute of Standards and Technology, 100 Bureau Drive, Stop 3460, Gaithersburg, MD 20899-3460,
USA. http://www.nist.gov.
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms apply.
3.1 Terms and definitions
3.1.1
ACS reagent grade
grade of chemical that meets purity standards as specified by the American Chemical Society (ACS)
3.1.2
user
manufacturer, service company, end user or operator applying the testing of this part of ISO 13503
3.2 Symbols and abbreviated terms
ACS American Chemical Society
API American Petroleum Institute
ASTM American Society for Testing and Materials
CAS Chemical Abstracts Service
FCTA first crystal to appear
LCTD last crystal to dissolve
NIST National Institute of Standards and Technology
NTU nephelometric turbidity unit
psi pounds per square inch
TCT true crystallization temperature
TD to deliver
USC United States Customary
V volts
3
ρ density, in g/cm
ρ density at lower temperature
1
ρ density at upper temperature

2
ρ density at 70 °F (21 °C), in lb/gal
70
3
ρ density at 21 °C (70 °F), in g/cm
21
3
ρ average wellbore density, in g/cm

A-SI
ρ average wellbore density, in lb/gal

A-USC
ρ measured density
m
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
3
ρ density, in lb/ft
cf
3
ρ density, in kg/m

SI
3
ρ density at 21°C, in kg/m

SI-21
ρ density, in lb/gal

USC
ρ density of water

W
θ temperature, in °C (°F)
θ temperature at lower reading, in °C (°F)
1
θ temperature at upper reading, in °C (°F)
2
θ measured temperature, in °C (°F)

m
∇ mud gradient, in psi/foot calculated from density expressed in pounds per cubic foot

cf
∇ mud gradient, in kPa/m
SI
∇ mud gradient, in psi/foot calculated from density expressed in pounds per gallon

USC
B intercept of hydrometer-correction curve
c
3
C density correction factor for temperature, in g/cm per °C
C temperature correction factor, in lb/gal per 100 °F

θ
C pressure correction factor, in lb/gal per 1 000 psi
p
3
C density correction factor for temperature, in kg/m per °C
SI
C density correction factor for temperature, in lb/gal per °F
USC
h depth (height) of well, in feet
h depth (height) of well at true vertical depth, in feet
2
R hydrometer reading, specific gravity
R hydrometer reading at lower temperature
1
R hydrometer reading at higher temperature
2
3
V volume, in cm
3
V volume of the original sample, in cm
1
Z slope of hydrometer-correction curve
c
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
4 Requirements
4.1 Quality control instructions
All quality control work shall be controlled by documented instructions which include appropriate methodology
and quantitative acceptance criteria.
4.2 Records retention
All records specified in this part of ISO 13503 shall be maintained for a minimum of one year from the date of
preparation.
5 Calibration of equipment
5.1 General requirements
5.1.1 Laboratory equipment and reagents shall be calibrated at periodic intervals, and by specified
calibration procedures. For laboratory items not listed, the user shall develop procedures where deemed
appropriate.
5.1.2 The user shall control, calibrate, verify and maintain the laboratory equipment and reagents used in
this part of ISO 13503 for measuring product conformance.
5.1.3 The user shall maintain and use laboratory equipment and reagents in a manner such that
measurement uncertainty is known and meets required measurement capability.
5.1.4 The user shall document and maintain calibration procedures, including details of laboratory
equipment and reagent type, identification number, frequency of checks, acceptance criteria, and corrective
action to be taken when results are unsatisfactory.
5.1.5 The user shall establish and document responsibility for administration of the calibration programme
and responsibility for corrective action.
5.1.6 The user shall document and maintain calibration records for laboratory equipment and reagents;
shall periodically review these records for trends, sudden shifts or other signals of approaching malfunction;
and shall identify each item with a suitable indicator or approved identification record to show calibration
status.
5.2 Reagents and materials for calibration
5.2.1 Chemicals and solutions
ACS reagent grade, or equivalent, is recommended. Shelf life shall not exceed the manufacturer’s
recommendation or six months after opening, if no recommendation is stated.
5.2.2 Distilled or de-ionized water
The user shall develop, document and implement a method to determine hardness of water, such as
3
ASTM D1126 or equivalent. The water shall not be used if hardness is greater than 5 µg/cm calcium ion
concentration.
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
5.3 General requirements for calibration of particular apparatus
5.3.1 Volumetric glassware
Laboratory volumetric glassware used for testing, including flasks and pipettes, are usually calibrated by the
supplier. Users of products in accordance with this part of ISO 13503 shall document evidence of glassware
calibration prior to use. Supplier certification is acceptable. Calibration may be checked gravimetrically.
Periodic recalibration is not required.
5.3.2 Laboratory temperature-measuring devices
The user shall calibrate all laboratory temperature-measuring devices used in measuring product
conformance against a secondary reference temperature-measuring device. The secondary reference
temperature-measuring device shall show evidence of calibration as performed against NIST certified master
instruments in accordance with ASTM E77 and NBS (NIST) Circular 555.
5.3.3 Laboratory balances
The user shall calibrate laboratory balances periodically in the range of use with ASTM Class 1, 4 or 6 or
better weights, depending on balance accuracy and in accordance with good laboratory practices, good
management practices or ISO quality management standards, and shall service and adjust balances
whenever calibration indicates a problem.
5.3.4 Hydrometers
The user shall check the calibration of each hydrometer with fluids of known density referenced to a standard.
5.3.5 Densitometer
The user shall calibrate each densitometer to a NIST standard according to the equipment manufacturer's
recommendations.
5.4 Frequency of calibration verification
5.4.1 General
Any instrument subjected to movement that will affect its calibration shall be recalibrated prior to use.
5.4.2 Temperature-measuring devices
Calibrate each temperature-measuring device before it is put into service. After calibration, mark each
temperature-measuring device with an identifying number that ties it to its corresponding correction chart.
Check calibration as required and stated by manufacturer, against the secondary reference
temperature-measuring device.
5.4.3 Laboratory balances
Calibrate each balance prior to being put into service. Check calibration at least annually, or more frequently
as stated by manufacturer.
5.4.4 Hydrometers
Calibrate each hydrometer prior to being put into service. After calibration, note and record each hydrometer
identifying number that ties it to its correction chart. Before each use, inspect for damage, and if needed
recalibrate or discard.
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SIST EN ISO 13503-3:2006
ISO 13503-3:2005(E)
5.5 Calibration verificatio
...