SIST EN ISO 10424-2:2009

Petroleum and natural gas industries - Rotary drilling equipment - Part 2: Threading and gauging of rotary shouldered thread connections (ISO 10424-2:2007)

This part of ISO 10424 specifies requirements on rotary shouldered connections for use in petroleum and natural gas industries, including dimensional requirements on threads and thread gauges, stipulations on gauging practice, gauge specifications, as well as instruments and methods for inspection of thread connections. These connections are intended primarily for use in drill-string components. Other supplementary specifications can be agreed between interested parties for special tolerance requirements, qualification, testing, inspection and finishing. This part of ISO 10424 is applicable to the following preferred rotary shouldered connection designs: a) number (NC) style; b) regular (REG) style; c) full hole (FH) style. These are traceable to an internationally supported system of gauges and calibration.

Erdöl- und Erdgasindustrie - Bohr- und Förderanlagen - Teil 2: Verschraubungen, Kalibrierung und Prüfung von drehenden Schulteransatz-Gewindeverbindungen (ISO 10424-2:2007)

Industries du pétrole et du gaz naturel - Équipements de forage rotary - Partie 2: Filetage et calibrage des connexions rotary filetées a épaulement (ISO 10424-2:2007)

L'ISO 10424-2:2007 spécifie des exigences relatives aux connexions rotatives à épaulement utilisées dans les industries du pétrole et du gaz naturel, comprenant des exigences dimensionnelles des filetages et calibres de filetage, des indications sur la pratique de calibrage, des spécifications de calibre, ainsi que des instruments et méthodes d'inspection des connexions filetées. Ces connexions sont principalement destinées à une utilisation dans des composants de train de tiges de forage.
Les parties intéressées peuvent convenir de spécifications supplémentaires concernant des exigences de tolérance particulières, la qualification, les essais, les inspections et la finition.
L'ISO 10424-2:2007 s'applique aux conceptions de connexions rotatives à épaulement préférées suivantes: style numérique (NC) («numbered-connection»); style standard (REG) («regular»); style plein diamètre (FH) («full hole»). Elles ont une traçabilité dans un système internationalement reconnu de calibres et d'étalonnages.

Industrija za predelavo nafte in zemeljskega plina - Oprema za rotacijsko vrtanje - 2. del: Vijačenje, kalibriranje in preskušanje vrtečih vijačnih zvez (ISO 10424-2:2007)

General Information

• Status: Published
• Publication Date: 06-Jan-2009
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 15-Dec-2008
• Due Date: 19-Feb-2009
• Completion Date: 07-Jan-2009
• Ref Project: EN ISO 10424-2:2007 - Petroleum and natural gas industries - Rotary drilling equipment - Part 2: Threading and gauging of rotary shouldered thread connections (ISO 10424-2:2007)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 10424-2:2009
01-februar-2009
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD2SUHPD]DURWDFLMVNRYUWDQMH
GHO9LMDþHQMHNDOLEULUDQMHLQSUHVNXãDQMHYUWHþLKYLMDþQLK]YH],62

Petroleum and natural gas industries - Rotary drilling equipment - Part 2: Threading and
gauging of rotary shouldered thread connections (ISO 10424-2:2007)
Erdöl- und Erdgasindustrie - Bohr- und Förderanlagen - Teil 2: Verschraubungen,
Kalibrierung und Prüfung von drehenden Schulteransatz-Gewindeverbindungen (ISO
10424-2:2007)
Industries du pétrole et du gaz naturel - Équipements de forage rotary - Partie 2: Filetage
et calibrage des connexions rotary filetées a épaulement (ISO 10424-2:2007)
Ta slovenski standard je istoveten z: EN ISO 10424-2:2007
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 10424-2:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10424-2:2009

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SIST EN ISO 10424-2:2009
EUROPEAN STANDARD
EN ISO 10424-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2007
ICS 75.180.10

English Version
Petroleum and natural gas industries - Rotary drilling equipment
- Part 2: Threading and gauging of rotary shouldered thread
connections (ISO 10424-2:2007)
Industries du pétrole et du gaz naturel - Équipements de Erdöl- und Erdgasindustrie - Bohr- und Förderanlagen - Teil
forage rotary - Partie 2: Filetage et calibrage des 2: Verschraubungen, Kalibrierung und Prüfung von
connexions rotary filetées à épaulement (ISO 10424- drehenden Schulteransatz-Gewindeverbindungen (ISO
2:2007) 10424-2:2007)
This European Standard was approved by CEN on 2 November 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10424-2:2007: E
worldwide for CEN national Members.

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SIST EN ISO 10424-2:2009
EN ISO 10424-2:2007 (E)
Contents Page
Foreword.3

2

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SIST EN ISO 10424-2:2009
EN ISO 10424-2:2007 (E)
Foreword
This document (EN ISO 10424-2:2007) 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 May 2008, and conflicting national standards shall be withdrawn at the
latest by May 2008.
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, 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 10424-2:2007 has been approved by CEN as a EN ISO 10424-2:2007 without any
modification.

3

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SIST EN ISO 10424-2:2009

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SIST EN ISO 10424-2:2009

INTERNATIONAL ISO
STANDARD 10424-2
First edition
2007-11-15


Petroleum and natural gas industries —
Rotary drilling equipment —
Part 2:
Threading and gauging of rotary
shouldered thread connections
Industries du pétrole et du gaz naturel — Équipements de forage
rotary —
Partie 2: Filetage et calibrage des connexions rotary filetées à
épaulement




Reference number
ISO 10424-2:2007(E)
©
ISO 2007

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
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©  ISO 2007
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.
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Published in Switzerland

ii © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope .1
2 Conformance — Units of measurement .1
3 Normative references .2
4 Terms, abbreviated terms, definitions and symbols.2
4.1 Terms and definitions .2
4.2 Design types and definitions.4
4.3 Abbreviations and symbols.6
5 Information to be supplied by purchaser.8
6 Threading.8
6.1 Thread profile and dimensions .8
6.2 Bevels for drill collars and tools that mate directly with drill collars.15
6.3 Low-torque feature .16
7 Product optional features .18
7.1 General.18
7.2 Stress-relief features .18
7.3 Benchmarks .21
7.4 Surface treatment .23
7.5 Cold working .23
7.6 Break-in.23
8 Product gauging .23
8.1 Gauging .23
8.2 Stand-off measurement.24
8.3 Gauge contact points .24
8.4 Lead measurement .25
8.5 Taper measurement.27
8.6 Thread height measurement and gauges .27
9 Gauge relationships for rotary shouldered connections .27
9.1 Gauge relationship .27
9.2 Gauge specifications.28
10 Gauge calibration.40
10.1 Calibration system.40
10.2 Acceptance criteria.40
10.3 Gauge measurement methods .40
10.4 Gauge certification .46
Annex A (informative) Tables in USC units .47
Annex B (informative) Care and use of regional master gauges .56
Annex C (normative) Shipment of reference master gauges .58
Annex D (normative) Care and use of working gauges .60
Annex E (informative) API gauge certification requirements .61
Annex F (informative) Other rotary shouldered connections.64
Annex G (informative) USC units conversion table .85
© ISO 2007 – All rights reserved iii

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
Annex H (informative) Recommended practice for gauging new rotary shouldered connections. 86
Annex I (informative) Calculations. 92
Annex J (informative) API grand and regional master rotary connection gauges . 96

iv © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(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 10424-2 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries, Subcommittee SC 4, Drilling and production
equipment.
ISO 10424 consists of the following parts, under the general title Petroleum and natural gas industries —
Rotary drilling equipment:
⎯ Part 1: Rotary drill stem elements
⎯ Part 2: Threading and gauging of rotary shouldered thread connections
© ISO 2007 – All rights reserved v

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
Introduction
This International Standard is based on API Spec 7, Specification for rotary drill stem elements.
Users of this International Standard should be aware that further or differing requirements may be needed for
individual applications. This International Standard is not intended to inhibit a vendor from offering, or the
purchaser from accepting, alternative equipment or engineering solutions for the individual application. This
may be particularly applicable where there is innovative or developing technology. Where an alternative is
offered, the vendor should identify any variations from this International Standard and provide details.

vi © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
INTERNATIONAL STANDARD ISO 10424-2:2007(E)

Petroleum and natural gas industries — Rotary drilling
equipment —
Part 2:
Threading and gauging of rotary shouldered thread
connections
1 Scope
This part of ISO 10424 specifies requirements on rotary shouldered connections for use in petroleum and
natural gas industries, including dimensional requirements on threads and thread gauges, stipulations on
gauging practice, gauge specifications, as well as instruments and methods for inspection of thread
connections. These connections are intended primarily for use in drill-string components.
Other supplementary specifications can be agreed between interested parties for special tolerance
requirements, qualification, testing, inspection and finishing.
This part of ISO 10424 is applicable to the following preferred rotary shouldered connection designs:
a) number (NC) style;
b) regular (REG) style;
c) full hole (FH) style.
These are traceable to an internationally supported system of gauges and calibration
2 Conformance — Units of measurement
In this part of ISO 10424, data are expressed in both the International System (SI) of units and the United
States Customary (USC) system of units. Separate tables for data expressed in SI units and USC units are
given in the body of this part of ISO 10424 and Annex A, respectively. Figures express data in both SI and
USC units. For a specific order item, it is intended that only one system of units be used, without combining
data expressed in the other system. Annex G provides the conversion between SI and USC units used in this
part of ISO 10424.
Products manufactured to specifications expressed in either of these unit systems shall be considered
equivalent and totally interchangeable. Consequently, compliance with the requirements of this part of
ISO 10424 as expressed in one system provides compliance with requirements expressed in the other
system. For data expressed in the SI system, a comma is used as the decimal separator and a space as the
thousands separator. For data expressed in the USC system, a dot (on the line) is used as the decimal
separator and a space as the thousands separator.
In the text, data in SI units are followed by data in USC units in brackets.
© ISO 2007 – All rights reserved 1

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
3 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 10424-1, Petroleum and natural gas industries — Rotary drilling equipment — Part 1: Rotary drill stem
elements
1)
ISO 11961 , Petroleum and natural gas industries — Steel drill pipe
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
API Spec 7, Specification for Rotary Drill Stem Elements
4 Terms, abbreviated terms, definitions and symbols
4.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4.1.1
bevel diameter
outside diameter of the contact face of the rotary shouldered connection
4.1.2
box connection
box end
threaded connection on oil country tubular goods with internal (female) threads
4.1.3
box thread
internal (female) threads of a rotary shouldered connection
4.1.4
break-in
procedure applied to newly manufactured threads to assure correct mating
4.1.5
calibration system
documented system of gauge calibration and control
4.1.6
cold working
plastic deformation of the surface of the connection at a temperature low enough to induce strain hardening
4.1.7
first perfect thread
thread furthest from the sealing face on a pin, or closest to the sealing face on a box, where both the crest and
the root are fully formed
4.1.8
full-depth thread
thread in which the thread root lies on the minor cone of an external thread or lies on the major cone of an
internal thread

1) To be published. (Revision of ISO 11961:1996)
2 © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
4.1.9
gauge point
imaginary plane, perpendicular to the thread axis of rotary shouldered connections at which the pitch
diameter, C, at gauge point is measured
NOTE This plane is located 15,875 mm (0.625 0 in) from the make-up shoulder of the pin thread.
4.1.10
interchange stand-off
stand-off between each member of a gauge set and a corresponding gauge next higher in the ranking
scheme: grand master or regional master, reference master, working gauge
4.1.11
lead
distance parallel to the thread axis from a point on a thread turn and the corresponding point on the next turn,
i.e. the axial displacement of a point following the helix one turn around the thread axis
4.1.12
make-up shoulder
sealing shoulder on a rotary shouldered connection
4.1.13
manufacturer
firm, company or corporation that operates facilities capable of cutting the threads and is responsible for
compliance with all the applicable provisions of this part of ISO 10424
4.1.14
master gauge
gauges used for calibration of other gauges
NOTE These include reference master, regional master and grand master gauges.
4.1.15
mating stand-off
stand-off between the plug and ring members of a gauge set
NOTE Interchange stand-off is the stand-off between each member and a gauge higher in the ranking scheme.
4.1.16
pin connection
pin end
threaded connection on oil country tubular goods with external (male) threads
4.1.17
pin thread
external (male) threads of a rotary shouldered connection
4.1.18
pitch
axial distance between successive threads, which, in a single start thread, is equivalent to lead
4.1.19
pitch cone
imaginary cone whose diameter at any point is equal to the pitch diameter of the thread at the same point
4.1.20
pitch diameter
diameter at which the distance across the threads is equal to the distance between the threads
© ISO 2007 – All rights reserved 3

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
4.1.21
product
drill string component with rotary shouldered connection in accordance with this part of ISO 10424
4.1.22
reference dimension
dimension that is a result of two or more other dimensions
4.1.23
rotary shouldered connection
thread connection used on drill stem elements which has coarse, tapered threads and sealing shoulders
4.1.24
stand-off
distance between faces of gauges, or gauge and product when mated
4.1.25
stress-relief groove
〈feature〉 modification performed on rotary shouldered connections that removes a certain length of the
unengaged threads of the pin or box
NOTE This process reduces the likelihood of fatigue cracking in the highly stressed area both for box and pin threads
due to a reduction of stress concentration.
4.1.26
taper
increase in the diameter of the pitch cone with length
NOTE The taper is expressed in millimetres per millimetre (inches per foot) of thread length.
4.1.27
thread form
thread profile in an axial plane for a length of one pitch
4.1.28
thread height
distance between the crest and root, normal to the axis of the thread
4.1.29
tolerance
amount of variation permitted
4.1.30
working gauges
gauges used for gauging rotary shouldered connections
4.2 Design types and definitions
NOTE Any style of rotary shouldered connection can be made in right-hand (RH) or left-hand (LH) versions.
Right-hand is assumed unless otherwise designated as LH.
4.2.1
full-hole style
FH style
type and size of rotary shouldered connection having thread form of V-040 or V-050
NOTE The number relates to a historical drill-pipe size.
4 © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
4.2.2
GOST Z style
type and size of the rotary shouldered connection, covered by a Russian standard and having the V-038R,
V-040 or V-050 thread form
NOTE The number designation is the pin-base diameter, rounded to units of millimetres.
4.2.3
H90 style
type and size of rotary shouldered connection having a 90° thread form
NOTE The number relates to a historical drill-pipe size.
4.2.4
IF style
type and size of the rotary shouldered connection having the V-038R thread form
NOTE 1 The number relates to a historical drill-pipe size.
NOTE 2 The thread form was historically V-065.
4.2.5
number style
NC style
type and size of the rotary shouldered connection having the V-038R thread form
NOTE The number in the connection number is the first two digits of the pitch diameter of the pin thread at the gauge
point, expressed in units of 2,54 mm (0.1 in).
4.2.6
open-hole style
OH style
type and size of rotary shouldered connection having the V-076 thread form
NOTE The number relates to a historical drill-pipe size.
4.2.7
PAC style
type and size of rotary shouldered connection having the V-076 thread form
NOTE The number relates to a historical drill-pipe size.
4.2.8
regular style
REG style
type and size of rotary shouldered connection having thread forms of V-040, V-050 or V-055
NOTE The number relates to a historical drill-pipe size.
4.2.9
SL H90 style
type and size of rotary shouldered connection having a 90° thread form and heavy truncation
NOTE The number relates to a historical drill-pipe size.
© ISO 2007 – All rights reserved 5

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
4.3 Abbreviations and symbols
4.3.1 Abbreviations
c/bore Counterbore
CW Cold working
dia. Diameter
FF Full face
FH Full-hole (style)
ID Inside diameter
IF Internal-flush (style)
LH Left-hand
LT Low-torque modification
max. Maximum
min. Minimum
NC Numbered-connection (style)
OD Outside diameter
OH Open-hole (style)
ref Reference (dimension)
REG Regular (style)
RH Right-hand
SRG Stress-relief groove
thds Threads
4.3.2 Symbols
A Depth of the pin stress-relief groove below the thread root at the gauge point
B Depth of box stress-relief groove, measured from the pitch cone addendum
C Pitch diameter at working gauge point
GP
C Pitch diameter of thread at gauge point
d Diameter of ball for lead and taper gauges
b
D Diameter of box member at stress-relief groove
BG
d Diameter of ball for thread-height gauge
bh
D Diameter of cylinder of boreback stress-relief contour
CB
D Diameter of face groove and box counterbore in low-torque feature
FG
D Diameter of plug fitting plate
FP
D Large diameter of pin
L
6 © ISO 2007 – All rights reserved

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
D Diameter of flat on pin
LF
D Major diameter of plug gauge at gauge point
MP
D Minor diameter of ring gauge at gauge point
MR
D Outside diameter of ring gauge
R
D Small diameter of pin
S
D Diameter of pin stress-relief groove
SRG
F Width of crest flat, product thread
c
F Width of root flat, product thread
r
f Crest truncation, product thread
c
f Crest truncation, gauge thread
cg
f Root truncation, product thread
r
f Root truncation, gauge thread
rg
H Reference thread height not truncated
h Product thread height truncated
h Depth of box stress-relief groove, measured normal to taper cone
bg
h Height of product thread, compensated for taper
cn
h Reference gauge thread height truncated
g
L Depth of box
BC
L Length, shoulder face to groove of box member
BG
L Depth of box threads (minimum)
BT
L Length of thread lead multiple, compensated for taper
ct
L Boreback length
CB
L Depth of cylinder of boreback contour
CYL
L Thickness of gauge fitting plate
fp
L Distance from shoulder to first full-depth pin thread
ft
L Distance from shoulder to gauge point
GP
L Total length of plug gauge
pg
L Total length of ring gauge
rg
L Length of pin
PC
L Depth of box counterbore
Qc
L Length of relief groove on pin
SRG
L Length from shoulder to last thread scratch on boreback cylinder
X
n Number of threads in 25,4 mm (1.0 in)
© ISO 2007 – All rights reserved 7

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SIST EN ISO 10424-2:2009
ISO 10424-2:2007(E)
P Pitch of thread (used also for lead, since all threads referenced are single-start)
Q Diameter of ring gauge counterbore
Q Diameter of product box counterbore
c
r Radius at corners of crest flat
c
r Radius at corners of root flat
r
R Root radius, product thread
R Radius at corners of box stress-relief groove
bg
R Radius at corners of low-torque grooves
FG
S Mating stand-off of gauges
S Stand-off of certified reference master gauges
0
S Stand-off of the working plug gauge on a reference master gauge
1
S Stand-off of the working ring gauge on a reference master gauge
2
T Taper, expressed as millimetres of diameter per millimetre of length or inches of diameter per foot
of length
T Thickness of gauge fitting plate
FP
ϕ Half
...