SIST EN ISO 10414-2:2011

Petroleum and natural gas industries - Field testing of drilling fluids - Part 2: Oil-based fluids (ISO 10414-2:2011)

This part of ISO 10414 provides standard procedures for determining the following characteristics of oil-based drilling fluids: a) drilling fluid density (mud weight); b) viscosity and gel strength; c) filtration; d) oil, water and solids concentrations; e) alkalinity, chloride concentration and calcium concentration; f) electrical stability; g) lime and calcium concentrations, calcium chloride and sodium chloride concentrations; h) low-gravity solids and weighting material concentrations. The annexes provide additional test methods or examples that can optionally be used for the determination of: - shear strength (Annex A); - oil and water concentrations from cuttings (Annex B); - drilling fluid activity (Annex C); - aniline point (Annex D); - lime, salinity and solids concentration (Annex E);-? sampling, inspection and rejection (Annex F); - rig-site sampling (Annex G); - cuttings activity (Annex H); - active sulphides (Annex I); - calibration and verification of glassware, thermometers, viscometers, retort kit cups and drilling fluid balances (Annex J); - permeability plugging apparatus with set-screw secured end cap (Annex K); - permeability plugging apparatus with threaded end cap (Annex L); - elastomer compatibility (Annex M); - sand content of oil-based fluid (Annex N); - identification and monitoring of weight-material sag (Annex O); - oil-based drilling fluid test report form (Annex P).

Erdöl- und Erdgasindustrie - Feldprüfung von Bohrflüssigkeiten - Teil 2: Flüssigkeiten auf Ölbasis (ISO 10414-2:2011)

Industries du pétrole et du gaz naturel - Essais in situ des fluides de forage - Partie 2: Fluides à base d'huiles (ISO 10414-2:2011)

L'ISO 10414-2:2011 fournit des procédures opératoires normalisées permettant l'évaluation des caractéristiques des fluides de forage à base d'huiles suivantes:
masse spécifique du fluide de forage (poids de la boue);
viscosité et force du gel;
filtration;
teneur en huile, eau et solides;
alcalinité, teneur en chlorures et teneur en calcium;
stabilité électrique;
teneurs en chaux et calcium, teneurs en chlorure de calcium et chlorure de sodium;
teneurs en déblais de forage de faible densité et en alourdissants.
Dans les annexes sont présentées des méthodes d'essais supplémentaires ou des exemples qui peuvent éventuellement être utilisés pour déterminer:
la force de cisaillement;
les teneurs en huile et en eau des déblais de forage;
l'activité du fluide de forage;
le point d'aniline;
les teneurs en chaux, en sels et solides;
l'échantillonnage, le contrôle et le refus;
l'échantillonnage in-situ;
l'activité des déblais de forage;
les sulfures actifs;
l'étalonnage et la vérification de la verrerie, thermomètres, viscosimètres, cuvettes de cornue de pyrogénation et balances pour fluide de forage;
les appareils de mesure d'obturation de la perméabilité (PPA) comportant des bouchons sécurisés à vis;
les appareils de mesure d'obturation de la perméabilité (PPA) comportant des bouchons filetés;
la compatibilité avec un élastomère;
la teneur en sable du fluide à base d'huile;
l'identification et le contrôle de la ségrégation de l'alourdissant;
le formulaire de rapport de tests de fluides de forage à base d'huile.

Industrija za predelavo nafte in zemeljskega plina - Preskušanje vrtalnih tekočin na terenu (in situ) - 2. del: Tekočine na oljni osnovi (ISO 10414-2:2011)

Ta del ISO 10414 zagotavlja standardne postopke za določanje naslednjih značilnosti vrtalnih tekočin na oljni osnovi: a) gostota vrtalne tekočine (teža blata); b) viskoznost in trdnost gela; c) filtracija; d) koncentracije olja, vode in trdnih snovi; e) alkalnost, koncentracija klorida in koncentracija kalcija; f) električna stabilnost; g) koncentracije apna in kalcija, koncentracije kalcijevega klorida in natrijevega klorida; h) koncentracije trdnih snovi z nizko gravitacijo in težkih materialov. Dodatki določajo dodatne metode preskušanja ali primere, ki se lahko po želji uporabijo za določitev: - strižne trdnosti (dodatek A); - koncentracij olja in vode iz izvrtin (dodatek B); - dejavnosti vrtalne tekočine (dodatek C); - anilinske točke (dodatek D); - koncentracij apna, slanosti in trdnih snovi (dodatek E); -? vzorčenje, nadzor in zavrnitev (dodatek F); - vzorčenje na mestu ploščadi (dodatek G); - dejavnost izvrtin (dodatek H); - aktivnih sulfidov (dodatek I); - kalibracije in preverjanja steklovine, termometrov, viskometrov, posod kompletov retort in ravni vrtalne tekočine (dodatek J); - oprema za zamašitev prepustnosti z zaščitno zaključno kapico z nastavnim vijakom (dodatek K); - oprema za zamašitev prepustnosti z zaključno kapico z navojem (dodatek L); - združljivost elastomera (dodatek M); - vsebnost peska v tekočini na oljni osnovi (dodatek N); - določanje in spremljanje povešanja težkega materiala (dodatek O); - obrazec za poročilo o preskusu vrtalne tekočine na oljni osnovi (dodatek P).

General Information

• Status: Published
• Public Enquiry End Date: 14-Jun-2010
• Publication Date: 10-Oct-2011
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 22-Sep-2011
• Due Date: 27-Nov-2011
• Completion Date: 11-Oct-2011
• Ref Project: EN ISO 10414-2:2011 - Petroleum and natural gas industries - Field testing of drilling fluids - Part 2: Oil-based fluids (ISO 10414-2:2011)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 10414-2:2011
01-november-2011
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD3UHVNXãDQMHYUWDOQLKWHNRþLQQD
WHUHQXLQVLWXGHO7HNRþLQHQDROMQLRVQRYL,62
Petroleum and natural gas industries - Field testing of drilling fluids - Part 2: Oil-based
fluids (ISO 10414-2:2011)
Erdöl- und Erdgasindustrie - Feldprüfung von Bohrflüssigkeiten - Teil 2: Flüssigkeiten auf
Ölbasis (ISO 10414-2:2011)
Industries du pétrole et du gaz naturel - Essais in situ des fluides de forage - Partie 2:
Fluides à base d'huiles (ISO 10414-2:2011)
Ta slovenski standard je istoveten z: EN ISO 10414-2:2011
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 10414-2:2011 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10414-2:2011

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SIST EN ISO 10414-2:2011


EUROPEAN STANDARD
EN ISO 10414-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2011
ICS 75.180.10
English Version
Petroleum and natural gas industries - Field testing of drilling
fluids - Part 2: Oil-based fluids (ISO 10414-2:2011)
Industries du pétrole et du gaz naturel - Essais in situ des Erdöl- und Erdgasindustrie - Feldprüfung von
fluides de forage - Partie 2: Fluides à base d'huiles (ISO Bohrflüssigkeiten - Teil 2: Flüssigkeiten auf Ölbasis (ISO
10414-2:2011) 10414-2:2011)
This European Standard was approved by CEN on 28 April 2011.

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, 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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10414-2:2011: E
worldwide for CEN national Members.

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SIST EN ISO 10414-2:2011
EN ISO 10414-2:2011 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 10414-2:2011
EN ISO 10414-2:2011 (E)
Foreword
This document (EN ISO 10414-2:2011) 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 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 December 2011, and conflicting national standards shall be withdrawn
at the latest by December 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 10414-2:2011 has been approved by CEN as a EN ISO 10414-2:2011 without any
modification.

3

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SIST EN ISO 10414-2:2011

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SIST EN ISO 10414-2:2011

INTERNATIONAL ISO
STANDARD 10414-2
Second edition
2011-06-15

Petroleum and natural gas industries —
Field testing of drilling fluids —
Part 2:
Oil-based fluids
Industries du pétrole et du gaz naturel — Essais in situ des fluides de
forage —
Partie 2: Fluides à base d'huiles




Reference number
ISO 10414-2:2011(E)
©
ISO 2011

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)


COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing 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 [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.2
3 Terms and definitions .2
4 Symbols and abbreviated terms .3
4.1 Symbols.3
4.2 Abbreviated terms .9
5 Determination of drilling fluid density (mud weight) .10
5.1 Principle.10
5.2 Apparatus.10
5.3 Procedure.10
5.4 Calculation .10
6 Alternative method for determination of drilling fluid density .12
6.1 Principle.12
6.2 Apparatus.12
6.3 Procedure.13
6.4 Calculation .14
7 Viscosity and gel strength.14
7.1 Principle.14
7.2 Determination of viscosity using the Marsh funnel.14
7.3 Determination of viscosity and gel strength using a direct-reading viscometer .15
8 Static filtration .18
8.1 Principle.18
8.2 High-temperature/high-pressure test up to 175 °C (350 °F).18
8.3 High-temperature/high-pressure test 175 °C (350 °F) up to and including 230 °C (450 °F) .21
9 Retort test for oil, water and solids concentrations .23
9.1 Principle.23
9.2 Apparatus.24
9.3 Procedure — Volumetric method .25
9.4 Calculation — Volumetric method.26
9.5 Procedure — Gravimetric method .27
9.6 Calculation — Gravimetric method .29
9.7 Calculation — Volume fractions of oil, water and solids .30
10 Chemical analysis of oil-based drilling fluids .32
10.1 Principle.32
10.2 Reagents and apparatus.33
10.3 Base alkalinity demand, V .34
B
10.4 Whole-drilling-fluid alkalinity, V .35
K
10.5 Whole-drilling-fluid chloride concentration.37
10.6 Whole-drilling-fluid calcium concentration .38
11 Electrical stability test.39
11.1 Principle.39
11.2 Apparatus.39
11.3 Equipment calibration/performance test .40
11.4 Procedure.40
© ISO 2011 – All rights reserved iii

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
12 Lime, salinity and solids calculations .41
12.1 Principle.41
12.2 Apparatus .42
12.3 Whole-drilling-fluid calculations .42
12.4 Aqueous phase calculations .44
12.5 Soluble and insoluble whole-drilling-fluid sodium chloride calculations .48
12.6 Calculation — Solids in the whole drilling fluid .49
Annex A (informative) Measurement of shear strength using shearometer tube .54
Annex B (informative) Determination of oil and water retained on cuttings.56
Annex C (informative) Determination of aqueous-phase activity of emulsified water using an
electrohygrometer .61
Annex D (informative) Determination of aniline point .64
Annex E (informative) Lime, salinity and solids calculations.67
Annex F (informative) Sampling, inspection and rejection of drilling materials .88
Annex G (informative) Rig-site sampling.90
Annex H (informative) Determination of cutting activity by the Chenevert method .93
Annex I (informative) Chemical analysis of active sulfides by the Garrett gas train method .97
Annex J (informative) Calibration and verification of glassware, thermometers, viscometers,
retort kit cup and drilling fluid balances .102
Annex K (informative) High-temperature/high-pressure filtration testing of oil-based drilling fluids
using the permeability plugging apparatus and cells equipped with set-screw secured
end caps .107
Annex L (informative) High-temperature/high-pressure filtration testing of oil-based drilling fluids
using the permeability plugging apparatus and cells equipped with threaded end caps .117
Annex M (informative) Compatibility of elastomeric materials with non-aqueous-based drilling
fluids .127
Annex N (informative) Sand content procedure for non-aqueous fluids .131
Annex O (informative) Identification and monitoring of weight-material sag.132
Annex P (informative) Oil-based drilling fluid report form.155
Bibliography .156

iv © ISO 2011 – All rights reserved

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(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 10414-2 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for the petroleum, petrochemical and natural gas industries, Subcommittee SC 3, Drilling and completion
fluids, and well cements.
This second edition cancels and replaces the first edition (ISO 10414-2:2002), which has been technically
revised.
ISO 10414 consists of the following parts, under the general title Petroleum and natural gas industries — Field
testing of drilling fluids:
⎯ Part 1: Water-based fluids
⎯ Part 2: Oil-based fluids

© ISO 2011 – All rights reserved v

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
Introduction
This part of ISO 10414 is based on API RP 13B-2:2005, Recommended practice for field testing of oil-based
drilling fluids.
As with any laboratory procedure requiring the use of potentially hazardous chemicals and equipment, the
user is expected to have received proper training and knowledge in the use and disposal of these potentially
hazardous materials. The user is responsible for compliance with all applicable local, regional and national
requirements for worker and local health, safety and environmental liability.
In this part of ISO 10414, quantities expressed in the International System (SI) of units are also, where
practical, expressed in United States Customary (USC) units in parentheses for information. The units do not
necessarily represent a direct conversion of SI units to USC units, or USC units to SI units. Consideration has
been given to the precision of the instrument making the measurement. For example, thermometers are
typically marked in one degree increments, thus temperature values have been rounded to the nearest degree.
Calibrating an instrument refers to ensuring the accuracy of the measurement. Accuracy is the degree of
conformity of a measurement of a quantity to its actual or true value. Accuracy is related to precision, or
reproducibility, of a measurement. Precision is the degree to which further measurements or calculations will
show the same or similar results. Precision is characterized in terms of the standard deviation of the
measurement. The results of calculations or a measurement can be accurate but not precise, precise but not
accurate, neither accurate nor precise, or both accurate and precise. A result is valid if it is both accurate and
precise.

vi © ISO 2011 – All rights reserved

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SIST EN ISO 10414-2:2011
INTERNATIONAL STANDARD ISO 10414-2:2011(E)

Petroleum and natural gas industries — Field testing of drilling
fluids —
Part 2:
Oil-based fluids
1 Scope
This part of ISO 10414 provides standard procedures for determining the following characteristics of oil-based
drilling fluids:
a) drilling fluid density (mud weight);
b) viscosity and gel strength;
c) filtration;
d) oil, water and solids concentrations;
e) alkalinity, chloride concentration and calcium concentration;
f) electrical stability;
g) lime and calcium concentrations, calcium chloride and sodium chloride concentrations;
h) low-gravity solids and weighting material concentrations.
The annexes provide additional test methods or examples that can optionally be used for the determination of:
⎯ shear strength (Annex A);
⎯ oil and water concentrations from cuttings (Annex B);
⎯ drilling fluid activity (Annex C);
⎯ aniline point (Annex D);
⎯ lime, salinity and solids concentration (Annex E);
⎯ sampling, inspection and rejection (Annex F);
⎯ rig-site sampling (Annex G);
⎯ cuttings activity (Annex H);
⎯ active sulphides (Annex I);
⎯ calibration and verification of glassware, thermometers, viscometers, retort kit cups and drilling fluid
balances (Annex J);
© ISO 2011 – All rights reserved 1

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
⎯ permeability plugging apparatus with set-screw secured end cap (Annex K);
⎯ permeability plugging apparatus with threaded end cap (Annex L);
⎯ elastomer compatibility (Annex M);
⎯ sand content of oil-based fluid (Annex N);
⎯ identification and monitoring of weight-material sag (Annex O);
⎯ oil-based drilling fluid test report form (Annex P).
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.
1)
ISO 10414-1:2008 , Petroleum and natural gas industries — Field testing of drilling fluids — Part 1: Water-
based fluids
2)
ISO 13501 , Petroleum and natural gas industries — Drilling fluids — Processing equipment evaluation
API RP 13D:2010, Recommended practice on the rheology and hydraulics of oil-well drilling fluids
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
ACS reagent grade
grade of chemical meeting the purity standards specified by the American Chemical Society (ACS) and listed
in the Chemical Abstracting Service (CAS)
3.2
density of water
density of 1 g/ml (8,334 lb/gal) for deionized or distilled water and 1 g/ml (8,345 lb/gal) for clean tap water
NOTE Deionized or distilled water is used for all equipment calibration. The volume of 1 kg of water is 1 l for the
purposes of this part of ISO 10414, and the volume of water is numerically equivalent to the volume of the water measured
in cubic centimetres or millilitres, i.e. 1 g = 1 ml.
3.3
spurt loss
volume of fluid that passes through the filtration medium before a filter cake is formed
3.4
pound
U.S. customary unit used to indicate pound-mass (weight), as opposed to pound-force (shear stress)

1) For the purposes of this part of ISO 10414, API RP 13B-1:2009, Recommended practice for field testing water-based
drilling fluids, is equivalent.
2) For the purposes of this part of ISO 10414, API RP 13C, Recommended practice on drilling fluids processing systems
evaluation, is equivalent.
2 © ISO 2011 – All rights reserved

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
3.5
volumic mass
dimensionless ratio of the mass of a volume of an object substance to the mass of the same volume of a
reference substance, i.e. the ratio of their respective mass densities
NOTE 1 Generally speaking, the reference substance is pure water.
NOTE 2 Volumic mass is commonly known as specific gravity.
4 Symbols and abbreviated terms
4.1 Symbols
a measure of the chemical potential or reaction availability of drilling fluid
DF
a measure of the chemical potential or reaction availability of water solutions of standard
W
salts
a measure of the chemical potential or reaction availability of drilled cuttings
C
b slope of the annular velocity and shear stress at the wall in laminar flow, as defined in
O.7.2.8
3)
B amount of weight-material sag, expressed in pounds-mass per gallon
VSST
C correction value to add to thermometer reading
c whole-drilling-fluid calcium concentration, expressed in milligrams per litre
+2
Ca ,DF
c aqueous-phase calcium concentration per volume of pure water, expressed in milligrams
+2
Ca ,H O
2
per litre
c aqueous-phase calcium chloride concentration, expressed in milligrams per litre
CaCl ,AQ
2
c whole-drilling-fluid calcium chloride concentration, expressed in milligrams per litre
CaCl ,DF,A
2
c whole-drilling-fluid calcium chloride concentration, expressed in pounds per barrel
CaCl ,DF,B
2
c whole-drilling-fluid calcium chloride concentration, expressed in kilograms per cubic metre
CaCl ,DF,C
2
c lime assay value, expressed as a weight fraction
Ca(OH) ,%
2
c whole-drilling-fluid total lime concentration, expressed in pounds per barrel
Ca(OH) ,DF,B
2
c whole-drilling-fluid total lime concentration, expressed in kilograms per cubic metre
Ca(OH) ,DF,C
2
c lime concentration of field lime, expressed in kilograms per cubic metre or pounds per
Ca(OH) ,F
2
barrel

3) Gallon as used throughout this part of ISO 10414 refers to the U.S. gallon of 3,785 4 litres.
© ISO 2011 – All rights reserved 3

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
c whole-drilling-fluid chloride concentration, expressed in milligrams per litre
−
Cl ,DF
c whole-drilling-fluid chloride concentration as calcium chloride, expressed in milligrams per
−
Cl()CaCl ,DF
2
litre
c whole-drilling-fluid chloride concentration from sodium chloride, expressed in milligrams
−
Cl()NaCl ,DF
per litre
c aqueous-phase sodium chloride concentration, expressed in milligrams per litre
NaCl,AQ
c low-gravity solids concentration, expressed in pounds per barrel
LG,B
c low-gravity solids concentration, expressed in kilograms per cubic metre
LG,C
c whole-drilling-fluid sodium chloride concentration, expressed in milligrams per litre
NaCl,DF,A
c whole-drilling-fluid sodium chloride concentration, expressed in pounds per barrel

NaCl,DF,B
c whole-drilling-fluid sodium chloride concentration, expressed in kilograms per cubic metre
NaCl,DF,C
c whole-drilling fluid insoluble sodium chloride concentration, expressed in milligrams per
NaCl,DF,INSOL,A
litre
c whole-drilling-fluid insoluble sodium chloride concentration, expressed in pounds per barrel
NaCl,DF,INSOL,B
c whole-drilling-fluid soluble sodium chloride concentration, expressed in milligrams per litre

NaCl,DF,SOL,A
c whole-drilling-fluid soluble sodium chloride concentration, expressed in pounds per barrel
NaCl,DF,SOL,B
c whole-drilling-fluid soluble sodium chloride concentration, expressed in kilograms per cubic
NaCl,DF,SOL,C
metre
c concentration of active sulfides, expressed in milligrams per litre
S−2
c weighting material concentration, expressed in pounds per barrel
WM,B
c weighting material concentration, expressed in kilograms per cubic metre
WM,C
d distance from the outer wall, expressed in inches
1
D outer pipe diameter or inner diameter of open hole, expressed in inches
d inner pipe diameter, expressed in inches
D true vertical depth, expressed in feet
TVD
E pump efficiency, expressed as percentage
f tube factor, taken from Table I.2
G′ storage modulus, expressed in Newtons per square metre
G″ loss modulus, expressed in Newtons per square metre
k consistency factor, expressed in pounds-force per second
C
4 © ISO 2011 – All rights reserved

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SIST EN ISO 10414-2:2011
ISO 10414-2:2011(E)
L length of the hydraulic section, expressed in feet
L length, expressed in feet
A
l submerged length of shear tube, expressed in centimetres
l submerged length of shear tube, expressed in inches
A
l Dräger tube darkened length (stained length), marked in units on the tube
D
m mass of the empty retort assembly (cup, lid and body packed with steel wool), expressed
1
in grams
m mass of the filled retort assembly (cup with sample, lid and body packed with steel wool),
2
expressed in grams
m mass of the empty, dry liquid receiver, expressed in grams
3
m mass of the cooled liquid receiver with condensed liquids, expressed in grams
4
m mass of the cooled retort assembly (body packed with steel wool), expressed in grams;
5
m mass of the dried retort cuttings, expressed in grams
d
m mass of drilling fluid
...