SIST EN ISO 20312:2011

Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011)

ISO 20312:2011 applies to design and operating limits for drill strings containing aluminium alloy pipes manufactured in accordance with ISO 15546.

Erdöl- und Erdgasindustrie - Empfohlenes Verfahren für die Auslegung und die Einsatzgrenzen von Bohrsträngen aus Aluminium-Bohrgestängen (ISO 20312:2011)

Industries du pétrole et du gaz naturel - Conception et limites d'exploitation des trains de tiges de forage ayant des composants en alliage d'aluminium (ISO 20312:2011)

L'ISO 20312:2011 s'applique à la conception et aux limites de fonctionnement des rames contenant des tiges en alliage d'aluminium fabriquées conformément à l'ISO 15546.

Industrija nafte in zemeljskega plina - Načrtovanje in omejitve uporabe vrtalnih nizov s sestavnimi deli iz aluminijevih zlitin (ISO 20312:2011)

Ta mednarodni standard velja za načrtovanje in omejitve uporabe za vrtalne nize, ki vsebujejo cevi iz aluminijevih zlitin, proizvedene v skladu z ISO 15546.

General Information

• Status: Published
• Publication Date: 25-Oct-2011
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• ICS: 77.150.10 - Aluminium products
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-Oct-2011
• Due Date: 30-Dec-2011
• Completion Date: 26-Oct-2011
• Ref Project: EN ISO 20312:2011 - Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011)

Overview

EN ISO 20312:2011 - Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011) defines design criteria and operating limits for drill strings that incorporate aluminium alloy drill pipe manufactured to ISO 15546. Prepared by ISO/TC 67 and adopted by CEN, the standard provides formulas, figures and recommendations (in SI units) to support safe selection, assembly and operation of drill strings containing aluminium alloy components.

Key Topics and Requirements

• Scope and applicability: Applies specifically to drill strings containing aluminium alloy pipes manufactured in accordance with ISO 15546.
• Material and component properties: Data and requirements for aluminium drill pipe (ADP) bodies and steel tool joints, including mechanical properties and buoyant weight.
• Design principles: Guidelines for drill string assembly design when using aluminium alloy components, with design formulas and calculation methods (Annex B).
• Temperature and environment: Considerations on the influence of temperature and susceptibility to hydroabrasive and corrosive damage when selecting materials.
• Buckling and stability: Definitions, limits and analysis methods for critical buckling load, sinusoidal and helical buckling of ADP-containing drill stems.
• Operational limits: Fatigue strength limits, combined load capacity, recommended operating practices and management of drilling operations involving aluminium components.
• Inspection, classification and marking: Wear-based inspection procedures, non-destructive testing references, wear classification for pipe and tool joints, and manufacturer marking responsibilities.
• Logistics: Requirements for transportation and storage of aluminium drill pipe.
• Supporting content: Informative annexes (design ranges, unit conversions) and normative calculation annex.

Applications and Who Uses It

EN ISO 20312:2011 is intended for professionals involved in the design, selection, operation and maintenance of drilling equipment in the petroleum and natural gas industries, including:

• Drilling engineers and well planners using aluminium drill pipe to reduce weight or for specific well conditions
• Drill pipe and tool joint manufacturers and suppliers designing components to be compliant with ISO 15546 and EN ISO 20312:2011
• Inspection and NDT personnel applying wear-based classification and non-destructive testing (see ISO 9712, ASNT SNT-TC-1A)
• Asset owners, procurement teams and HSE engineers specifying operating limits, storage and transport requirements

Practical uses include selecting ADP for offshore light-weight drill strings, calculating buckling and fatigue limits, performing wear-based inspections, and documenting compliance for procurement and operations.

Related Standards

• ISO 15546 - Aluminium alloy drill pipe
• ISO 9712 - Non-destructive testing - Personnel qualification
• ASNT SNT-TC-1A - Personnel qualification and certification in NDT

Keywords: EN ISO 20312:2011, aluminium drill pipe, drill string design, ISO 15546, operating limits, petroleum and natural gas industries, buckling, fatigue strength, inspection.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2011
,QGXVWULMDQDIWHLQ]HPHOMVNHJDSOLQD1DþUWRYDQMHLQRPHMLWYHXSRUDEHYUWDOQLK
QL]RYVVHVWDYQLPLGHOLL]DOXPLQLMHYLK]OLWLQ,62
Petroleum and natural gas industries - Design and operating limits of drill strings with
aluminium alloy components (ISO 20312:2011)
Erdöl- und Erdgasindustrie - Empfohlenes Verfahren für die Auslegung und die
Einsatzgrenzen von Bohrsträngen aus Aluminium-Bohrgestängen (ISO 20312:2011)
Industries du pétrole et du gaz naturel - Conception et limites d'exploitation des trains de
tiges de forage ayant des composants en alliage d'aluminium (ISO 20312:2011)
Ta slovenski standard je istoveten z: EN ISO 20312:2011
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
77.150.10 Aluminijski izdelki Aluminium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 20312
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2011
ICS 75.180.10
English Version
Petroleum and natural gas industries - Design and operating
limits of drill strings with aluminium alloy components (ISO
20312:2011)
Industries du pétrole et du gaz naturel - Conception et Erdöl- und Erdgasindustrie - Auslegung und
limites de fonctionnement des garnitures de forage en Einsatzgrenzen von Bohrsträngen aus Aluminium-
alliage d'aluminium (ISO 20312:2011) Bohrgestängen (ISO 20312:2011)
This European Standard was approved by CEN on 14 October 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 20312:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 20312:2011) 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 April 2012, and conflicting national standards shall be withdrawn at the
latest by April 2012.
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 20312:2011 has been approved by CEN as a EN ISO 20312:2011 without any modification.

INTERNATIONAL ISO
STANDARD 20312
First edition
2011-10-15
Petroleum and natural gas industries —
Design and operating limits of drill
strings with aluminium alloy components
Industries du pétrole et du gaz naturel — Conception et limites de
fonctionnement des garnitures de forage en alliage d'aluminium

Reference number
ISO 20312:2011(E)
©
ISO 2011
ISO 20312:2011(E)
©  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

ISO 20312:2011(E)
Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms, definitions, symbols and abbreviated terms . 1
3.1  Terms and definitions . 1
3.2  Symbols . 3
3.3  Abbreviated terms . 7
4  Properties of ADP and tool joints . 8
4.1  General . 8
4.2  New pipes and tool joints data . 8
4.3  Buoyant weight . 8
4.4  Mechanical properties . 8
4.5  ADP with integral tool joint and heavy wall ADP . 11
5  Considerations and limitations of drill string design using ADP . 15
5.1  Application aspects of aluminium alloy drill pipe . 15
5.2  General principles of aluminium drill string assembly design . 16
5.3  Influence of temperature on choice of material for drill pipe . 17
5.4  Resistance to hydroabrasive and corrosive damage . 23
5.5  Buckling . 24
6  Basic requirements for calculation of drill strings containing ADP . 26
7  Drill pipe operation . 27
7.1  Operations management . 27
7.2  General drill pipe operating recommendations . 27
7.3  Fatigue strength limitations . 31
7.4  Combined load capacity limitation . 32
8  Wear-based inspection, identification and classification of aluminium drill pipe . 36
8.1  Inspection . 36
8.2  Wear-based marking and identification of pipe and tool joints. 38
8.3  Wear-based pipe classification . 39
8.4  Wear-based tool joints classification . 40
8.5  Pipe repairing and discarding . 40
9  Transportation and storage of pipe . 41
9.1  Transportation of pipe . 41
9.2  Storage of pipe . 41
Annex A (informative) Drill pipe design, range and technical properties of integral tool joint ADP
and heavy wall ADP . 42
Annex B (normative) Calculations . 47
Annex C (informative) Conversion of SI units to USC units . 58
Bibliography . 59

ISO 20312:2011(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 20312 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries.
iv © ISO 2011 – All rights reserved

ISO 20312:2011(E)
Introduction
The function of this International Standard is to define operating limits of aluminium drill pipes and recommend
design criteria for the drill stem containing such aluminium drill pipes. This International Standard contains
formulas and figures to aid in the design and selection of equipment to meet a specific drilling condition.
In this International Standard, data are expressed in the International System of units (SI).
Users of this International Standard need to be aware that further or differing requirements could be needed
for individual applications. This International Standard is not intended to inhibit a manufacturer from offering,
or the purchaser from accepting, alternative equipment or engineering solutions for the individual application,
particularly where there is innovative or developing technology. Where an alternative is offered, the
manufacturer will need to identify any variations from this International Standard and provide details.
This International Standard includes provisions of various nature. These are identified by the use of certain
verbal forms:
 “shall” is used to indicate that a provision is mandatory;
 “should” is used to indicate that a provision is not mandatory, but recommended as good practice;
 “may” is used to indicate that a provision is optional.

INTERNATIONAL STANDARD ISO 20312:2011(E)

Petroleum and natural gas industries — Design and operating
limits of drill strings with aluminium alloy components
1 Scope
This International Standard applies to design and operating limits for drill strings containing aluminium alloy
pipes manufactured in accordance with ISO 15546.
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 9712, Non-destructive testing — Qualification and certification of personnel
ISO 15546, Petroleum and natural gas industries — Aluminium alloy drill pipe
ASNT Recommended Practice No. SNT-TC-1A, Personnel Qualification and Certification in Non-destructive
Testing
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
aluminium alloy pipe body
aluminium alloy pipe formed by extrusion, including upsets and protector thickening
3.1.2
aluminium alloy drill pipe
aluminium alloy pipe body with threaded steel tool joints
3.1.3
box
tool joint part that has internal tool-joint thread
3.1.4
buckling
unstable lateral deflection of a drill stem component under compressive effective axial force
3.1.5
corrosion
adverse chemical alteration or destruction of a metal by air, moisture or chemicals
ISO 20312:2011(E)
3.1.6
critical buckling load
load level associated with initiation of drill stem components buckling
3.1.7
dogleg
sharp change of direction in a well bore
3.1.8
dogleg severity
measure of the amount of change in the inclination and/or direction of a borehole, usually expressed in
degrees per 30 m interval
3.1.9
drill string
complete assembly from the swivel or top drive to the drill bit, which can contain the kelly, drill pipes, subs, drill
collars and other bottom hole assembly (BHA) members, such as stabilizers, reamers and junk baskets
3.1.10
effective axial force
force created by adverse combinations of axial load and pressure
3.1.11
helical buckling
buckling in which drill stem components form a helix or spiral shape
3.1.12
manufacturer
firm, company or corporation responsible for marking the product
NOTE Marking by the manufacturer warrants that the product conforms to this International Standard, and it is the
manufacturer who is responsible for compliance with all of its applicable provisions.
3.1.13
new class pipe
wear-based classification of pipe not having been put in service
3.1.14
pin
tool joint part that has external tool-joint thread
3.1.15
premium class, class 2 pipe
wear-based classification of pipe worn to an extent listed in Tables 12 and 13
3.1.16
sinusoidal buckling
buckling of drill stem components in a sinusoidal shape
3.1.17
slip area
area within a small distance along the pipe body from the box end, clamped by the pipe slips during the pulling
and running operations
3.1.18
tool joint
steel tool joint element for drill pipes consisting of two parts (pin and box)
2 © ISO 2011 – All rights reserved

ISO 20312:2011(E)
3.1.19
TT type thread
trapezoidal-shaped thread connecting aluminium pipe body and steel joint
NOTE See ISO 15546.
3.2 Symbols
A factor depending on the failure theory selected for calculations and adjusted for anisotropy of drill pipe
material
A box cross-sectional area at 9,525 mm from the bearing face
b
A drill pipe cross-sectional area
dp
A cross-sectional area circumscribed by pipe outside diameter
OD
A pin cross-sectional area at 15,875 mm from the bearing face
p
A cross-sectional area of pin A or box A , whichever is smaller
pb p b
A cross-sectional area of drill pipe in upset part
z
a coefficient of linear expansion of material
e
a cross-sectional area of pipe wall with regard to pipe ovality
w
B variable
b strain reduction factor
C pitch diameter of thread at gauge point
c area coverage coefficient
D pipe body outside diameter
dp
D average diameter of the borehole at the regarded interval
h
D maximum outside diameter of pipe
max
D minimum outside diameter
min
D protector outside diameter
pt
D tool joint outside diameter
tj
D outside diameter of drill pipe in upset part
U
D
conventional outside diameter of drilling pipe with tool joint
d pipe body inside diameter
dp
d pin inside diameter
p
ISO 20312:2011(E)
E modulus of elasticity or Young’s modulus
F variable
f friction factor
g acceleration of gravity, 9,81m/s
H thread height not truncated
H drilling mud depth
dm
h fluid depth
h drilling string setting depth
DS
h well depth at the upper limit of drill string section
K
h well depth at the lower limit of drill string section
K1
I moment of inertia of the pipe body in regard to transverse axis (at bending)
J drill pipe moment of inertia with respect to its diameter
K transverse load factor
k plastic-to-elastic-collapse ratio
L strength-to-weight ratio
L half the distance between tool joints
1/2
L strength-to-weight ratio of aluminium
Al
L pipe length with tool joint (the distance between the tool joint box face and the pin shoulder)
dp
L length of the pin that mates with the box
pc
L length of slip contact with drill pipe
s
L strength-to-weight ratio of steel
St
l length of section “K”
K
M mass per unit length of plain end pipe body
B
M mass per unit length of drill pipe
dp
M mass per unit length of drill pipe in drill string section “K”
K
m mass of plain end pipe body
b
m mass gain due to protector thickening
p
m tool joint mass
tj
4 © ISO 2011 – All rights reserved

ISO 20312:2011(E)
m mass gain due to upsets
u
n number of the drill string sections
O initial ovality
i
P load applied to the drill string
P collapse pressure
P minimum collapse pressure for imperfect pipe
c
P elastic bending pressure
e
P net external pressure
ext
P helical buckling force
hel
P internal pressure
i
P internal yield pressure
i y
P tensile stress applied to the bottom cross-section
K
P maximum tension yield strength of drill pipe body
max
P sinusoidal buckling force
sin
P effective tensile load on tubular
T
P yield pressure with simultaneous tension
y
P axis load when the stress in the body of the pipe chucked in the slips reaches yield strength
z
p lead of thread
Q box counter bore
c
R dogleg severity radius at the beginning and the end of the build or drop interval
R variable
s
R variable
t
S mean axial stress
a
S maximum permissible bending stress
b
S stress produced by the buoyant weight of the drill string below dogleg
DL
S root truncation
rs
s bending strain experienced by tubular
ISO 20312:2011(E)
s critical bending strain
T torque applied to the drill string
T recommended make up torque for the aluminium drill pipes tool joints
j
T maximum torsional yield strength of drill pipe body
max
T torsional yield limit in connection
y
t wall thickness
dp
t operational temperature
t wall thickness of drill pipe in upset part
u
W polar sectional modulus of torsion of pipe body
p
w weight per unit length of pipe in air
w buoyant weight of drill string section suspended below the dogleg
DL
w weight per unit length of pipe in mud
m
Y minimum yield strength of material
min
 zenith angle of the borehole interval
 minimum zenith angle of the borehole
 zenith angle at the beginning of the build or drop interval
H
 zenith angle at the end of the build or drop interval
K
 slips taper angle
SL
 average zenith angle of the borehole at build or drop interval
 taper
L overall elongation of combined drill string
l elongation under the weight of the downhole sections and BHA
BHA
l thermal elongation
t
l elongation of the relevant drill string section “K” under its own weight load
w
 gap between borehole wall and the average outside diameter of drilling pipe
 temperature gradient
 dogleg severity
6 © ISO 2011 – All rights reserved

ISO 20312:2011(E)
θ half angle of thread
 Poisson’s ratio
 coefficient of friction between slips and master bushing
SL
 constant,  = 3,141 812
 density of aluminium, 2 800 kg/m
Al
 drilling mud density
dm
 equivalent density
e
 density of steel, 7 850 kg/m
St
 level of normal stresses applied to the design sections of drill string
 fatigue limit of the drill pipe
1
 pipe material ultimate strength
b
 equivalent stress
e
 allowable stress intensity calculated as adjusted to the normative safety factors
i
 reduced yield stress
r
 level of tangential stresses applied to the drill string
 shear stress, reaching minimum yield strength
min
 out-of-roundness function
 imperfection function
 friction angle
SL
3.3 Abbreviated terms
ADP aluminium alloy drill pipe
BHA bottom hole assembly
EU external upset
HWADP heavy wall aluminium drill pipe
HWSDP heavy weight steel drill pipe
HWDP heavy wall drill pipe
ID inside diameter
IU internal upset
ISO 20312:2011(E)
OD outside diameter
ROP rate of penetration
RPM revolutions per minute
SDP steel drill pipe
TJ tool joint
WOB weight on bit
4 Properties of ADP and tool joints
4.1 General
Dimensional and mechanical properties of new ADP and tool joints shall be as specified in ISO 15546. The
pipes may be with external or internal upset ends, and with protector thickening. Separate tables of the
chapter include the data on the drill pipe torsional strength, tensile strength, and resistance against internal
and external pressure.
4.2 New pipes and tool joints data
The new pipes and tool joint data properties are given in Tables 1 and 2.
4.3 Buoyant weight
The ADP buoyant weight of different length groups in the fluids of different density could be calculated by
Equation (B.5). The equivalent density of new pipes is given in Tables 1 and 2. For mass calculation purposes,
the assumed aluminium alloy density in Tables 1, 2, 5, 6 and 7 is 2 800 kg/m , and the steel density is
7 850 kg/m . If alloys of other density are used, a correcting factor shall be applied.
EXAMPLE
Objective: Calculate the weight of 1 m of ADP 147  11; 11,8 m long; with internal upset ends; with protector thickening in
drilling mud with gravity 1 200 kg/m .
Solution: According to Table 2, the mass of 1 m of this pipe is 21,45 kg, equivalent density is 3 271 kg/m .
The weight in mud will be as follows:
1200
w21,45 9,81 1  133,2 N/m

m
3 271

4.4 Mechanical properties
The mechanical properties of new pipe (tensional yield strength, torsional yield strength, internal yield and
collapse pressure values) are given in Table 3. The properties correspond to the temperature of 20 °C. The
“weak section” for the calculations was assumed to be the aluminium drill pipe body.
The mechanical properties of the premium class pipe are given in Table 4.
The mechanical properties of class 2 pipe are given in Table 5.
The wear classification of ADP is based on 8.3 and Table 12.
8 © ISO 2011 – All rights reserved

ISO 20312:2011(E)
Mechanical properties of aluminium drill pipe bodies can be affected by exposure at elevated temperature
(see 5.3).
Table 1 — Dimensional and mass properties of new drill pipe with external upset ends
Tool joint Mass per linear
Equivalent density
metre including all
of pipe with tool
b
upsets, protector
joints ,
thickening, and tool
a
kg/m
joint , kg/m
c c
Range
Length range Length range
2 3 1 2 3 1 2 3
90 8 5,77 4,00 — — 118 68 NC 38 19,5 9,56 8,26 7,76 3 552 3 336 3 244
114 10 9,15 7,77 — — 155 95 NC 50 38,6 16,63 14,06 13,08 3 688 3 444 3 337
— — 20,46 16,69 15,26 3 652 3 447 3 351
129 9 9,50 21,97 172 112 5 1/2 FH 46,0
9,57 13,99 — 17,71 16,45 — 3 402 3 318
— — 24,51 20,72 19,28 3 477 3 298 3 219
131 13 13,49 22,32 178 105 5 1/2 FH 46,0
17,29 25,27 — 22,55 21,43 — 3 251 3 185
— — 21,98 18,48 17,15 3 577 3 371 3 279
133 11 11,80 17,10 172 112 5 1/2 FH 46,0
13,37 19,53 — 19,90 18,81 — 3 323 3 245
— — 23,51 20,42 19,25 3 513 3 307 3 220
140 13 14,52 9,72 172 112 5 1/2 FH 46,0
20,51 29,98 — 22,59 21,79 — 3 251 3 180
— — 28,40 23,16 21,16 3 676 3 464 3 365
147 11 13,16 29,26 195 124 6 5/8 FH 65,2
10,37 15,15 — 24,25 22,45 — 3 427 3 338
— — 30,12 25,19 23,31 3 611 3 399 3 304
151 13 15,78 23,69 195 124 6 5/8 FH 65,2
28,54 41,72 — 28,21 26,85 — 3 323 3 249
— — 31,90 27,28 25,53 3 554 3 344 3 253
155 15 18,47 18,02 195 124 6 5/8 FH 65,2
22,80 33,32 — 29,69 28,35 — 3 292 3 216
— — 28,11 22,66 20,59 3 711 3 499 3 398
164 9 12,27 31,69 203 124 6 5/8 FH 66,5
19,39 28,34 — 24,71 22,99 — 3 428 3 345
— — 30,03 24,93 22,99 3 635 3 421 3 324
168 11 15,19 25,51 203 124 6 5/8 FH 66,5
15,89 23,23 — 26,61 24,96 — 3 374 3 290
a
Value is calculated by Equation (B.3).
b
Value is calculated by Equation (B.4).
c
ADP length ranges are defined by ISO 15546.

Outside diameter,
mm
Wall thickness, mm
Plain pipe mass per
1 linear metre, kg/m
Mass gain due to
upset,
kg
Mass gain
due to
protector
thickening,
kg
OD, mm
Minimum ID, mm
Thread
Tool joint mass, kg
ISO 20312:2011(E)
Table 2 — Dimensional and mass properties of new drill pipe with internal upset ends
Tool joint
Mass per linear metre
Equivalent density of
including all upsets,
b
pipe with tool joints ,
protector thickening,
kg/m
a
and tool joint , kg/m
c c
Length range
Length range Length range
2 3 1 2 3 1 2 3
64 8 3,94 0,76 — — 80 34 NC23 9,5 5,60 5,03 4,81 3 399 3 213 3 138
— — 7,66 6,77 6,43 3 485 3 278 3 193
73 9 5,07 1,55 95 44 NC26 14,5
6,90 10,09 — 7,50 7,28 — 3 225 3 156
— — 9,40 8,38 7,98 3 423 3 234 3 155
90 9 6,41 2,05 108 54 NC31 16,5
8,36 12,22 — 9,26 9,02 — 3 187 3 123
— — 9,40 8,38 7,98 3 423 3 234 3 155
90 9 6,41 2,05 120,6 56 NC38 16,5
8,36 12,22 — 9,26 9,02 — 3 187 3 123
— — 11,77 10,28 9,72 3 436 3 252 3 174
103 9 7,44 5,83 120,6 68 NC38 21,0
9,48 13,85 — 11,28 10,89 — 3 206 3 142
— — 12,41 10,70 10,05 3 540 3 329 3 239
103 9 7,44 5,83 127 68 NC38 25,0
9,48 13,85 — 11,71 11,23 — 3 276 3 202
— — 15,96 13,62 12,73 3 622 3 392 3 292
114 10 9,15 7,34 145 82 NC44 34,9
18,88 27,59 — 15,62 15,07 — 3 302 3 229
— — 17,70 15,04 14,03 3 686 3 438 3 331
114 11 9,97 6,92 152 80 NC46 41,0
18,88 27,59 — 17,04 16,37 — 3 349 3 267
— — 18,38 15,33 14,17 3 711 3 470 3 363
129 9 9,50 11,58 162 93 NC50 43,5
16,75 24,48 — 17,10 16,24 — 3 386 3 302
— — 20,22 17,19 16,04 3 605 3 383 3 286
129 11 11,42 11,07 162 93 NC50 43,5
16,75 24,48 — 18,96 18,12 — 3 318 3 240
— — 23,56 19,98 18,62 3 680 3 436 3 329
147 11 13,16 10,17 178 105 54,3
5 1/2 FH
22,80 33,32 — 22,39 21,45 — 3 354 3 271
— — 25,94 22,29 20,90 3 577 3 357 3 262
147 13 15,32 11,52 178 105 5 1/2 FH 54,3
22,80 33,32 — 24,70 23,73 — 3 293 3 217
147 15 17,42 11,07 — — 178 105 1/2 FH 54,3 27,96 24,33 22,96 3 507 3 302 3 215
— — 29,59 24,64 22,76 3 737 3 489 3 379
168 11 15,19 17,80 203 127 71,5
6 5/8 FH
30,26 44,23 — 27,84 26,51 — 3 393 3 309
— — 31,88 27,01 25,16 3 649 3 415 3 313
168 13 17,72 16,26 203 127 6 5/8 FH 71,5
30,26 44,23 — 30,21 28,91 — 3 338 3 258
a
Value is calculated by Equation (B.3).
b
Value is calculated by Equation (B.4).
c
ADP length ranges are defined by ISO 15546.

10 © ISO 2011 – All rights reserved

Outside diameter, mm
Wall thickness, mm
Plain pipe mass per
1 linear metre, kg/m
Mass gain due to upset, kg
Mass gain due to
protector thickening,
kg
OD, mm
Minimum ID, mm
Thread
Tool joint mass, kg
ISO 20312:2011(E)
4.5 ADP with integral tool joint and heavy wall ADP
ISO 15546 does not cover the ADP with integral tool joint and heavy wall ADP, which are manufactured in the
assembled condition with steel tool joints (see Figures A.1 and A.2). Their technical properties are given in
Annex A. ADP with integral rotary shouldered connections are used as technological sets in the intervals
where the danger of drill string sticking exists. Heavy wall ADP are widely used in BHA to ensure smooth
stiffness transition from drill collars to ADP or as diamagnetic pipe to perform directional survey inside the drill
string when drilling directional or vertical wells.
ISO 20312:2011(E)
12 © ISO 2011 – All rights reserved
Table 3 — Mechanical properties of new pipe
b
Torsional yield strength ,
a c d
Connection
Nominal Nominal TJ tor- Tension yield strength , kN Internal yield pressure , MPa Collapse pressure , MPa
kN·m
sional
outside wall
Upset e e e e
TJ
diam- thick- yield Material group Material group Material group Material group
TJ TJ
type
f
pin
eter, ness, strength ,
thread OD,
ID,
l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV
mm mm
type mm
kN·m
mm
64 8 IU NC 23 80 34 8,2 457 675 478 492 5,2 7,7 5,5 5,6 81,3 120,0 85,0 87,5 72,9 104,4 76,1 78,2
73 9 IU NC 26 95 44 10,0 588 868 615 633 7,7 11,4 8,1 8,3 80,1 118,4 83,8 86,3 71,7 102,5 74,8 76,9
90 8 EU NC 38 118 68 21,8 669 989 700 721 11,6 17,1 12,1 12,5 57,8 85,3 60,4 62,2 46,9 63,0 48,7 49,8
IU NC 31 108 54 16,1
90 9 744 1 099 778 801 12,6 18,6 13,2 13,5 65,0 96,0 68,0 70,0 55,2 76,3 57,4 58,9
IU NC 38 120,6 58 25,8
IU NC 38 120,6 68 24,7
103 9 863 1 275 903 930 17,1 25,3 17,9 18,4 56,8 83,9 59,4 61,2 45,7 61,2 47,4 48,5
IU NC 38 127 68 25,0
IU NC 44 145 82 35,7
114 10 1061 1 567 1 110 1 143 23,3 34,4 24,3 25,1 57,0 84,2 59,6 61,4 46,0 61,6 47,7 48,8
EU NC 50 155 95 49,9
114 11 IU NС46 152 80 48,5 1 156 1 708 1 210 1 245 24,9 36,8 26,1 26,8 62,7 92,6 65,6 67,5 52,6 72,1 54,7 56,0
129 9 EU 5 1/2 FH 172 112 55,4 1 102 1 628 1 153 1 187 28,3 41,8 29,6 30,5 45,3 67,0 47,4 48,8 31,8 39,6 32,7 33,3
129 11 IU NC 50 162 95 51,3 1 325 1 956 1 386 1 427 33,0 48,8 34,6 35,6 55,4 81,9 58,0 59,7 44,1 58,6 45,7 46,8
131 13 EU 5 1/2 FH 178 105 69,4 1 565 2 312 1 638 1 686 38,6 57,0 40,3 41,5 64,5 95,3 67,5 69,5 54,6 75,4 56,8 58,3
133 11 EU 5 1/2 FH 172 112 55,4 1 370 2 023 1 433 1 475 35,4 52,3 37,0 38,1 53,8 79,4 56,2 57,9 42,1 55,5 43,6 44,6
140 13 EU 5 1/2 FH 172 112 55,4 1 685 2 488 1 763 1 814 44,9 66,3 47,0 48,4 60,4 89,1 63,1 65,0 49,9 67,8 51,8 53,1
IU 5 1/2 FH 178 105 69,4
147 11 1 527 2 255 1 597 1 644 44,3 65,4 46,3 47,7 48,6 71,8 50,9 52,4 35,9 45,8 37,1 37,8
EU 6 5/8 FH 195 124 84,5
147 13 IU 5 1/2 FH 178 105 69,4 1 778 2 626 1 860 1 914 50,2 74,1 52,5 54,1 57,5 84,9 60,1 61,9 46,5 62,5 48,3 49,4
147 15 IU 5 1/2 FH 178 105 69,4 2 021 2 984 2 114 2 176 55,6 82,1 58,1 59,8 66,3 98,0 69,4 71,4 56,7 78,7 59,0 60,5
151 13 EU 6 5/8 FH 195 124 84,5 1 831 2 704 1 915 1 972 53,3 78,8 55,8 57,5 56,0 82,6 58,5 60,3 44,8 59,6 46,4 47,5
155 15 EU 6 5/8 FH 195 124 84,5 2 143 3 165 2 242 2 308 62,8 92,7 65,7 67,6 62,9 92,9 65,8 67,7 52,8 72,5 54,9 56,3
164 9 EU 6 5/8 FH 203 124 107,2 1 424 2 103 1 489 1 533 47,9 70,8 50,1 51,6 35,7 52,7 37,3 38,4 19,7 22,6 20,1 20,3
EU 6 5/8 FH 203 124 107,2
168 11 1 762 2 603 1 844 1 898 59,5 87,9 62,3 64,1 42,6 62,9 44,5 45,8 28,3 34,4 29,1 29,6
IU 6 5/8 FH 203 127 99,5
168 13 IU 6 5/8 FH 203 127 99,5 2 056 3 037 2 151 2 214 67,8 100,2 70,9 73,0 50,3 74,3 52,6 54,2 37,9 48,9 39,2 40,0
a
Value is calculated by Equation (B.6).
b
Value is calculated by Equation (B.7).
c
Value is calculated by Equation (B.8).
d
Value is calculated by Equation (B.9).
e
Material groups are as defined in ISO 15546.
f
Calculated values are based on Equation (B.15), yield strength of the material and dimensions of tool joint connection as defined in ISO 15546.

ISO 20312:2011(E)
a
Table 4 — Mechanical properties of premium class pipe
b c d e
Minimum Upset TJ
Nominal
Tension yield strength , Torsional yield strength , Internal yield pressure , Collapse pressure ,
Connection
Minimum
Nominal
wall type torsional
wall kN kN·m MPa MPa
outside outside
thick- thick- yield
a f f f f
TJ TJ TJ
diameter, diameter , a g Material group Material group Material group Material group
ness, ness , strength ,
thread OD, pin ID,
mm
mm
mm l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV   l ΙΙ ΙΙΙ ΙV
mm type mm mm kN·m
64 8 60,8 6,4 IU NC 23 77,2 34 7,3 355 525 372 383 4,0 5,9 4,2 4,3 68,4 101,1 71,6 73,7 59,0 82,4 61,4 63,0
73 9 69,4 7,2 IU NC 26 91,0 44 10,0 457 675 478 492 5,9 8,7 6,2 6,4 67,4 99,6 70,5 72,6 57,9 80,6 60,3 61,8
90 8 86,8 6,4 IU NC 38 115,0 68 17,5 525 776 549 566 9,0 13,3 9,4 9,7 47,9 70,8 50,1 51,6 35,0 44,4 36,1 36,8
EU NC 31 104,0 54 16,1
90 9 86,4 7,2 582 859 609 627 9,8 14,4 10,2 10,5 54,2 80,0 56,7 58,3 42,6 56,2 44,1 45,1
IU NC 38 117,1 58 20,7
IU NC 38 117,1 68 20,7
103 9 99,4 7,2 677 1 001 709 730 13,3 19,7 14,0 14,4 47,1 69,5 49,3 50,7 34,0 42,8 35,0 35,7
IU NC 38 122,4 68 25,0
IU NC 44 139,9 82 35,7
114 10 110,0 8 833 1 230 871 897 18,1 26,8 19,0 19,5 47,3 69,8 49,5 50,9 34,2 43,2 35,3 36,0
IU NC 50 150,9 95 39,9
114 11 109,6 8,8 EU NС46 146,7 80 47,9 905 1 337 947 975 19,4 28,6 20,3 20,9 52,2 77,1 54,6 56,2 40,2 52,5 41,6 42,5
129 9 125,4 7,2 IU 5 1/2 FH 167,6 112 53,2 868 1 283 909 935 22,2 32,8 23,3 24,0 37,3 55,1 39,0 40,2 21,7 25,3 22,2 22,5
129 11 124,6 8,8 EU NC 50 156,7 95 51,3 1 040 1 536 1 088 1 120 25,8 38,1 27,0 27,8 45,9 67,8 48,0 49,4 32,5 40,6 33,5 34,1
131 13 125,8 10,4 IU 5 1/2 FH 172,5 105 68,5 1 225 1 809 1 281 1 319 29,9 44,2 31,3 32,2 53,7 79,4 56,2 57,9 42,1 55,4 43,6 44,6
133 11 128,6 8,8 EU 5 1/2 FH 167,6 112 53,2 1 076 1 589 1 126 1 159 27,6 40,8 28,9 29,8 44,5 65,7 46,5 47,9 30,7 38,0 31,6 32,2
140 13 134,8 10,4 EU 5 1/2 FH 167,6 112 53,2 1 320 1 950 1 381 1 422 35,0 51,6 36,6 37,6 50,1 74,1 52,5 54,0 37,8 48,6 39,0 39,8
EU 5 1/2 FH 172,5 105 68,5
147 11 142,6 8,8 1 202 1 775 1 257 1 294 34,7 51,2 36,3 37,4 40,1 59,2 42,0 43,2 25,2 30,1 25,8 26,2
IU 6 5/8 FH 190,7 124 67,6
147 13 141,8 10,4 EU 5 1/2 FH 172,5 105 68,5 1 395 2 060 1 459 1 502 39,1 57,8 40,9 42,1 47,7 70,4 49,9 51,3 34,7 43,9 35,8 36,5
147 15 141,0 12 IU 5 1/2 FH 172,5 105 68,5 1 580 2 333 1 653 1 701 43,1 63,6 45,1 46,4 55,3 81,7 57,9 59,6 44,0 58,4 45,6 46,6
151 13 145,8 10,4 IU 6 5/8 FH 190,7 124 67,6 1 437 2 122 1 503 1 548 41,6 61,5 43,5 44,8 46,4 68,5 48,5 49,9 33,1 41,5 34,1 34,7
155 15 149,0 12 EU 6 5/8 FH 190,7 124 67,6 1 678 2 478 1 755 1 807 48,8 72,0 51,0 52,5 52,3 77,3 54,8 56,4 40,4 52,8 41,8 42,7
164 9 160,4 7,2 EU 6 5/8 FH 197,2 124 94,3 1 126 1 663 1 178 1 212 37,8 55,8 39,5 40,7 29,2 43,1 30,5 31,4 12,3 13,3 12,4 12,5
EU 6 5/8 FH 197,2 124 94,3
168 11 163,6 8,8 1 390 2 053 1 454 1 497 46,8 69,1 48,9 50,4 35,0 51,6 36,6 37,7 18,9 21,5 19,2 19,4
EU 6 5/8 FH 197,2 127 94,3
168 13 162,8 10,4 IU 6 5/8 FH 197,2 127 94,3 1 617 2 389 1 692 1 742 53,1 78,4 55,5 57,2 41,5 61,3 43,4 44,7 27,0 32,6 27,7 28,1
a
Wear criterion based on maximum percentage of uniform wear stated in Table 12.
b
Value is calculated by Equation (B.6).
c
Value is calculated by Equation (B.7).
d
Value is calculated by Equation (B.8).
e
Value is calculated by Equation (B.9).
f
Material groups are as defined in ISO 15546.
g
Calculated values based on Equation (B.15); yield strength of material and dimensions of tool joint connection as defined in ISO 15546.

ISO 20312:2011(E)
14 © ISO 2011 – All rights reserved
a
Table 5 — Mechanical properties of class 2 pipe
c d
Minimum
Nominal
Torsional yield strength , Internal yield pressure ,
b e
Thread
Minimum Tension yield strength , kN Collapse pressure , MPa
Nominal
wall
wall kN·m MPa
torsional
outside outside Thread Upset
thick- thick-
a
yield
f f f f
diameter, diameter , a type type
Material group Material group Material group Material group
ness, ness ,
mm
mm
kN·m
mm
mm l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV l ΙΙ ΙΙΙ ΙV
64 8 59,2 5,6 NC 23 IU 6,2 306 452 320 330 3,4 5,1 3,6 3,7 61,5 90,8 64,3 66,2 51,2 69,9 53,2 54,5
73 9 67,6 6,3 NC 26 IU 10,0 394 582 412 424 5,1 7,5 5,3 5,5 60,6 89,5 63,4 65,2 50,1 68,2 52,1 53,4
90 8 85,2 5,6 NC 38 EU 15,0 455 672 476 490 7,8 11,5 8,1 8,4 42,7 63,1 44,7 46,0 28,5 34,7 29,3 29,8
NC 31 IU 16,9
90 9 84,6 6,3 503 743 527 542 8,4 12,4 8,8 9,1 48,4 71,5 50,6 52,1 35,6 45,3 36,7 37,5
NC 38 IU 14,6
NC 38 IU 17,6
587 867 614 632 11,5 17,0 12,1 12,4 42,0 62,0 43,9 45,2 27,5 33,4 28,3 28,7
103 9 97,6 6,3
NC 38 IU 24,5
NC 44 IU 35,2
114 10 108,0 7,0 721 1 066 755 777 15,7 23,2 16,4 16,9 42,1 62,2 44,1 45,4 27,8 33,7 28,5 29,0
NC 50 EU 34,2
114 11 107,4 7,7 NС46 IU 40,6 783 1 157 820 844 16,7 24,7 17,5 18,0 46,6 68,8 48,8 50,2 33,4 41,9 34,4 35,0
129 9 123,6 6,3 5 1/2 FH EU 45,5 754 1 114 789 812 19,3 28,5 20,2 20,8 33,1 48,9 34,7 35,7 16,7 18,7 17,0 17,1
129 11 122,4 7,7 NC 50 IU 46,5 901 1 331 943 971 22,3 32,9 23,3 24,0 40,9 60,4 42,8 44,0 26,2 31,4 26,9 27,3
131 13 123,2 9,1 5 1/2 FH EU 58,3 1 060 1 565 1 108 1 141 25,8 38,1 27,0 27,8 48,0 70,9 50,2 51,7 35,1 44,6 36,2 36,9
133 11 126,4 7,7 5 1/2 FH EU 45,5 933 1 378 976 1 004 23,9 35,3 25,0 25,8 39,6 58,5 41,4 42,6 24,6 29,2 25,2 25,5
140 13 132,2 9,1 5 1/2 FH EU 45,5 1 143 1 688 1 196 1 231 30,2 44,6 31,6 32,5 44,7 66,1 46,8 48,2 31,0 38,5 31,9 32,5
5 1/2 FH IU 58,3
147 11 140,4 7,7 1 043 1 540 1 091 1 123 30,1 44,4 31,4 32,4 35,6 52,6 37,3 38,4 19,7 22,6 20,1 20,3
6 5/8 FH EU 58,0
147 13 139,2 9,1 5 1/2 FH IU 58,3 1 208 1 784 1 264 1 301 33,8 49,9 35,4 36,4 42,5 62,8 44,5 45,8 28,2 34,3 29,0 29,5
147 15 138,0 10,5 5 1/2 FH IU 58,3 1 366 2 018 1 429 1 471 37,1 54,8 38,8 40,0 49,5 73,0 51,7 53,3 36,9 47,3 38,1 38,9
151 13 143,2 9,1 6 5/8 FH EU 58,0 1 245 1 839 1 303 1 341 36,0 53,1 37,6 38,7 41,3 61,0 43,2 44,5 26,7 32,2 27,4 27,8
155 15 146,0 10,5 6 5/8 FH EU 58,0 1 452 2 144 1 519 1 564 42,1 62,1 44,0 45,3 46,7 69,0 48,9 50,3 33,6 42,2 34,6 35,2
164 9 158,6 6,3 6 5/8 FH EU 80,5 979 1 446 1 024 1 054 32,9 48,5 34,4 35,4 25,8 38,1 27,0 27,8 8,9 9,5 9,0 9,1
6 5/8 FH EU 80,5
168 11 161,4 7,7 1 208 1 784 1 263 1 301 40,6 59,9 42,5 43,7 31,0 45,8 32,4 33,4 14,3 15,7 14,5 14,6
6 5/8 FH IU 80,5
168 13 160,2 9,1 6 5/8 FH IU 80,5 1 403 2 072 1 468 1 511 46,0 67,9 48,1 49,5 36,9 54,5 38,6 39,8 21,3 24,6 21,7 22,0
a
Wear criterion based on maximum percentage of uniform wear stated in Table 12.
b
Value is calculated by Equation (B.6).

c
Value is calculated by Equation (B.7).
d
Value is calculated by Equation (B.8).
e
Value is calculated by Equation (B.9).
f
Material groups are as defined in ISO 15546.

ISO 20312:2011(E)
5 Considerations and limitations of drill string design using ADP
5.1 Application aspects of aluminium alloy drill pipe
5.1.1 The main and the decisive characteristic property of aluminium drill pipe is its high “strength-to-weight”
ratio, i.e. the ratio of the yield strength to the drill pipe's own weight in the drilling fluid. The drill pipe “strength-
to-weight” ratio is expressed in length and is a physical characteristic of the maximum length of the uniform-
sized drill-string section suspended in a vertical well, at which the tensile strength in the upper section reaches
the yield point. The “strength-to-weight” ratio is calculated by Equation (B.11).
EXAMPLE
Objective: Calculate “strength-to-weight” ratio of ADP 147  11 IU with protector thickening; 11,8 m long; II group of alloys
3 3
and SDP 5 7/8" from S-135 steel in drilling mud with density of 1 000 kg/m and 2 000 kg/m .
Solution: Use Equation (B.11).
Y 10
min
L
9,81

edm
where
Y is the minimum yield stress of group II aluminium alloy (ISO 15546) = 480 MPa;
min
ρ is the equivalent density of ADP with tool joints (Table 2) = 3 271 kg/m ;
e
ρ is the drilling mud density:
dm
 for ρ = 1 000 kg/m :
dm
48010
L 21545 m ;
Al
9,813271 1 000

 for ρ = 2 000 kg/m :
dm
480 10
L 38497 m .
Al
9,81(3 271 2 000)
For steel S-135 (ISO 11961):
σ is the yield stress of S-135 steel = 931 MPa;
min
ρ is the equivalent density of steel pipe = 7 850 kg/m ;
e
ρ is the drilling mud density:
dm
 for ρ = 1 000 kg/m :
dm
931 10
L 13854 m ;
St
9,81( 7 850 1 000)
 for ρ = 2 000 kg/m :
dm
93110
L 16223 m .
St
9,81(7 850 2 000)
ISO 20312:2011(E)
5.1.2 Low modulus of elasticity, E, of aluminium alloys in aluminium
...