SIST EN ISO 13628-4:2000

SLOVENSKI STANDARD
SIST EN ISO 13628-4:2000
01-december-2000
Petroleum and natural gas industries - Design and operation of subsea production
systems - Part 4: Subsea wellhead and tree equipment (ISO 13628-4:1999)
Petroleum and natural gas industries - Design and operation of subsea production
systems - Part 4: Subsea wellhead and tree equipment (ISO 13628-4:1999)
Erdöl- und Erdgasindustrien - Konstruktion und Betrieb von Unterwasser-
Produktionssystemen - Teil 4: Bohrlochkopf- und E-Kreuz-Ausrüstungen für den
Unterwassereinsatz (ISO 13628-4:1999)
Industries du pétrole et du gaz naturel - Conception et fonctionnement des systemes de
production immergés - Partie 4: Equipements immergés de tete de puits et tete de
production (ISO 13628-4:1999)
Ta slovenski standard je istoveten z: EN ISO 13628-4:1999
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 13628-4:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000
INTERNATIONAL ISO
STANDARD 13628-4
First edition
1999-06-15
Petroleum and natural gas industries —
Design and operation of subsea production
systems —
Part 4:
Subsea wellhead and tree equipment
Industries du pétrole et du gaz naturel — Conception et fonctionnement des
systèmes de production immergés
Partie 4: Équipements immergés de tête de puits et tête de production
A
Reference number
ISO 13628-4:1999(E)

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SIST EN ISO 13628-4:2000
ISO 13628-4:1999(E)
Contents Pages
1 Scope .1
2 Normative references .3
3 Terms, definitions, symbols and abbreviations .5
3.1 Terms and definitions .5
3.2 Symbols and abbreviations .10
4 Service conditions and product specification levels.11
4.1 Service conditions.11
4.2 Product specification levels (PSL).11
5 Common system requirements .12
5.1 Design and performance requirements.12
5.2 Materials .22
5.3 Welding.23
5.4 Quality control.23
5.5 Equipment marking .25
5.6 Storing and shipping.26
6 Specific requirements — Subsea tree assemblies.27
6.1 Design.27
6.2 Testing of subsea tree assemblies .34
6.3 Marking .34
6.4 Storing and shipping.35
7 Specific requirements — Subsea tree related equipment and sub-assemblies.35
7.1 Flanged end and outlet connections .35
7.2 ISO clamp hub-type connections.49
©  ISO 1999
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 the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
7.3 Threaded connections . 49
7.4 Other end connectors . 49
7.5 Studs, nuts and bolting. 49
7.6 Ring gaskets . 50
7.7 Tree connectors and tubing hanger spools. 51
7.8 Tree stab subs and seal subs. 55
7.9 Valves, valve blocks and actuators . 56
7.10 TFL wye spool and diverter . 62
7.11 Re-entry spool. 63
7.12 Subsea tree cap . 65
7.13 Tree cap running tool. 67
7.14 Tree guide frame. 69
7.15 Tree running tool . 72
7.16 Tree piping . 74
7.17 Flowline connector systems. 76
7.18 Control pod running tool . 80
7.19 Flowline connector support frame running/retrieving tools and related system interfaces . 80
7.20 Tree-mounted hydraulic/electric control interfaces. 82
7.21 Subsea chokes and actuators. 85
7.22 Miscellaneous equipment. 94
8 Specific requirements — Subsea wellhead. 98
8.1 General . 98
8.2 Temporary guide base . 98
8.3 Permanent guide base . 99
8.4 Conductor housing. 101
8.5 Wellhead housing. 103
8.6 Casing hangers. 106
8.7 Annulus seal assemblies. 108
8.8 Bore protectors and wear bushings . 109
8.9 Corrosion cap . 110
8.10 Running, retrieving and testing tools. 111
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
9 Specific requirements — Subsea tubing hanger system .111
9.1 General.111
9.2 Design.111
9.3 Materials .113
9.4 Testing .113
10 Specific requirements — Conventional mudline suspension equipment.114
10.1 General.114
10.2 Mudline suspension-landing/elevation ring.118
10.3 Casing hangers.118
10.4 Casing hanger running and tieback tools.120
10.5 Abandonment caps .120
10.6 Tieback adapters — Mudline conversion equipment for subsea completions .121
10.7 Tubing hanger spools — Mudline conversion equipment for subsea completions.121
10.8 Tubing hanger system — Mudline conversion equipment for subsea completions .121
11 Scope specific requirements — Drill-through mudline suspension equipment .121
11.1 General.121
11.2 Conductor housing.122
11.3 508 mm (20 in) or 473 mm (18 5/8 in) casing hanger.123
11.4 Wellhead housing .125
11.5 Casing hangers.127
11.6 Annulus seal assemblies .129
11.7 Bore protectors and wear bushings .130
11.8 Abandonment caps .131
11.9 Running, retrieving and testing tools.131
12 Purchasing guide lines.131
12.1 General.131
12.2 Typical wellhead and tree configurations .131
12.3 Product specification levels .131
12.4 Material class rating .132
Annex A (informative) Conventional subsea trees .133
Annex B (informative) Horizontal subsea trees.136
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© ISO
ISO 13628-4:1999(E)
Annex C (informative) Subsea wellhead . 140
Annex D (informative) Subsea tubing hanger . 142
Annex E (normative) Conventional mudline suspension and conversion systems . 145
Annex F (informative) Drill-through mudline suspension systems . 151
Annex G (normative) Recommended flange bolt torques . 153
Annex H (normative) Design and testing of subsea wellhead running, retrieving and testing tools. 155
Annex I (informative) Procedure for the application of a coating system. 157
Bibliography. 160
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(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 3.
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.
International Standard ISO 13628-4 was prepared by Technical Committee ISO/TC 67, Materials, equipment and
offshore structures for petroleum and natural gas industries, Subcommittee SC 4, Drilling and production
equipment.
ISO 13628 consists of the following parts, under the general title Petroleum and natural gas industries — Design
and operation of subsea production systems:
 Part 1: General requirements and recommendations
 Part 2: Flexible pipe systems for subsea and marine applications
 Part 3: Through Flowline (TFL) systems
 Part 4: Subsea wellhead and tree equipment
 Part 5: Subsea control umbilicals
 Part 6: Subsea production control systems
 Part 7: Workover/completion riser systems
 Part 8: Remotely Operated Vehicles (ROV) interfaces on subsea production systems
 Part 9: Remotely Operated Tools (ROT) intervention systems
Annexes E, G and H form a normative part of this part of ISO 13628. Annexes A, B, C, D, F and I are for information
only.
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
Introduction
This part of ISO 13628 is not intended to obviate the need for sound engineering judgement as to when and where
this part of ISO 13628 should be utilized, and the users of this part of ISO 13628 should be aware that additional or
differing requirements may be needed to meet the needs for the particular service intended or to meet local
legislation.
The objective of this part of ISO 13628 is to define clear and unambiguous requirements which will facilitate
international standardization in order to enable safe and economic development of offshore oil and gas fields by the
use of subsea wellhead and christmas tree equipment. This part of ISO 13628 is written in a manner which will
allow the use of a wide variety of technology varying from the well established to the state of the art. This part of
ISO 13628 does not wish to restrict or deter the development of new technology. However, the reader is
encouraged to closely look at standard interfaces and the re-use of intervention systems and tools, in the interests
of minimizing life cycle costs and increasing reliability by the use of proven interfaces.
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed that compliance
with this part of ISO 13628 may involve the use of one or more patents concerning certain of the horizontal tree
designs given in subclause 6.1.2, annex B and Figures 4, B.1, B.2 and B.3.
The ISO takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured the ISO that he is willing to negotiate licences under reasonable and
non-discriminatory terms and conditions with the applicants throughout the world. In this respect, the statement of
the holder of this patent right is registered with the ISO.
Information may be obtained from: Peter A. Bielinski, Esq.
Intellectual Property attorney
Cooper Cameron Corporation
515 Post Oak Blvd., Suite 1200
Houston, Texas 77027
U.S.A.
Attention is drawn to the possibility that some of the elements of this part of ISO 13628 may be the subject of patent
rights other than those identified above. ISO shall not be held responsible for identifying any or all such patent
rights.
This part of ISO 13628 is based on API Specification 17D First edition, October 30, 1992, Specification for Subsea
Wellhead and Christmas Tree Equipment including Supplement 1 (March 1, 1993).
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SIST EN ISO 13628-4:2000

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SIST EN ISO 13628-4:2000
INTERNATIONAL STANDARD  © ISO ISO 13628-4:1999(E)
Petroleum and natural gas industries — Design and operation of
subsea production systems —
Part 4:
Subsea wellhead and tree equipment
1 Scope
1.1  This part of ISO 13628 specifies subsea copewellhead, conventional mudline wellhead, drill through mudline
wellhead, conventional subsea trees and horizontal subsea trees. It also specifies the associated tooling necessary
to handle, test and install the equipment. It also specifies the areas of design, material, welding, quality control
(including factory acceptance testing), marking, storing and shipping for both individual sub-assemblies (used to
build complete subsea tree assemblies) and complete subsea tree assemblies.
Where applicable, this part of ISO 13628 may also be used for equipment on satellite, cluster arrangements and
multiple well template applications.
1.2  Equipment which is within the scope of this part of ISO 13628 is listed as follows:
a) Subsea trees
 tree connectors and tubing hanger spools;
 valves, valve blocks, and valve actuators;
 chokes and choke actuators;
 bleed, test and isolation valves;
 TFL wye spool;
 re-entry spool;
 tree cap;
 tree piping;
 tree guide frames;
 tree running tools;
 tree cap running tools;
 tree mounted flowline/umbilical connector;
 control module/pod running/retrieval and testing tools;
 flowline base running/retrieval tools;
 tree mounted controls interfaces (instrumentation, sensors, hydraulic tubing/piping and fittings, electrical
controls cable and fittings).
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
b) Subsea wellheads
 conductor housings;
 wellhead housings;
 casing hangers;
 seal assemblies;
 guidebases;
 bore protectors and wear bushings;
 corrosion caps.
c) Conventional mudline suspension systems
 wellheads;
 running tools;
 casing hangers;
 casing hanger running tool;
 tieback tools for subsea completion;
 subsea completion adaptors for mudline wellheads;
 tubing spools;
 corrosion caps.
d) Drill through mudline suspension systems
 conductor housings;
 surface casing hangers;
 wellhead housings;
 casing hangers;
 annulus seal assemblies;
 bore protectors and wear bushings;
 abandonment caps.
e) Tubing hanger systems
 tubing hangers;
 running tools.
f) Miscellaneous equipment
 flanged end and outlet connections;
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
 clamp hub-type connections;
 threaded end and outlet connections;
 other end connections;
 studs and nuts;
 ring joint gaskets;
 intervention equipment;
 guide line establishment equipment.
1.3  Equipment which is beyond the scope of this part of ISO 13628 includes:
 subsea wireline/coiled tubing BOPs;
 workover and production risers;
 control systems and control pods;
 platform tiebacks;
 primary protective structures;
 subsea process equipment;
 subsea manifolding;
 subsea wellhead tools;
 repair and rework;
 multiple well template structures;
 mudline suspension high pressure risers;
 template piping;
 template interfaces.
1.4  Equipment definitions are given in clause 3 and equipment use and function are explained in annexes A to F.
Service conditions and product specification levels are given in clause 4.
Critical components are those parts having requirements specified in this part of ISO 13628.
Rework and repair of used equipment are beyond the scope of this part of ISO 13628.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 13628. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 13628 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
ISO 10422, Petroleum and natural gas industries — Threading, gauging, and thread inspection of casing, tubing,
and line pipe threads — Specification.
ISO 10423:1994, Petroleum and natural gas industries — Drilling and production equipment — Specification for
valves, wellhead and Christmas tree equipment.
ISO 10424, Petroleum and natural gas industries — Drilling and production equipment — Specification for rotary
drilling equipment.
ISO 11960, Petroleum and natural gas industries — Steel pipes for use as casing or tubing for wells.
ISO 13628-1, Petroleum and natural gas industries — Design and operation of subsea production systems —
Part 1: General requirements and recommendations.
ISO 13628-2, Petroleum and natural gas industries — Design and operation of subsea production systems —
Part 2: Flexible pipe systems for subsea and marine applications.
ISO 13628-9, Petroleum and natural gas industries — Design and operation of subsea production systems —
Part 9: Remote Operated Tools (ROT) intervention systems.
ANSI/ASME B16.11, Forged Fittings, Socket-Welding and Threaded.
ANSI/ASME B31.3, Process Piping.
ANSI/NACE MR0175, Sulphide Stress Cracking Resistant Metallic Materials for Oilfield Equipment.
ANSI/SAE J517, Hydraulic Hose.
ANSI/SAE J343, Tests and Procedures for SAE 100R Series Hydraulic Hose and Hose Assemblies.
1)
API Spec 16A
2)
API Spec 16R
3)
API RP 17C
AWS D1.1, Structural Welding Code.
Det Norske Veritas Offshore Standard RP B401,Cathodic Protection Design.
INACE RP0176, Cathodic protection of steel fixed offshore structures.
NAS 1638-64, National Aerospace Standard-Cleanliness Requirements of Parts Used in Hydraulic Systems.
PFI Standard ES-24, Pipe Bending Methods, Tolerances, Process and Material Requirements.

1)
For the purposes of this part of ISO 13628, API Spec 16A will be replaced by ISO 13533 when the latter becomes publicly
available.
2)
For the purposes of this part of ISO 13628, API Spec 16R will be replaced by ISO 13625 when the latter becomes publicly
available.
3)
For the purposes of this part of ISO 13628, API Spec 17C will be replaced by ISO 13628-3 when the latter becomes publicly
available.
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SIST EN ISO 13628-4:2000
© ISO
ISO 13628-4:1999(E)
3 Terms, definitions, symbols and abbreviations
For the purposes of this part of ISO 13628, the following terms, definitions, symbols and abbreviations apply.
3.1 Terms and definitions
3.1.1
annulus seal assembly
mechanism which provides pressure isolation between each casing hanger and the wellhead housing
3.1.2
bore protector
device which protects internal bore surfaces during drilling or workover operations
3.1.3
check valve
device designed to restrict flow in one direction
3.1.4
completion riser
riser that is designed to fit inside a BOP to allow installation of a tubing hanger, and may also be suitable for
connection to the tree upper connection for use as a means for running the tree or for use as a workover riser
3.1.5
conductor housing
top of the first casing string which forms the basic foundation of the subsea wellhead and provides attachments for
guidance structures
3.1.6
corrosion cap
cap placed over the wellhead to protect it from contamination by debris, marine growth, or corrosion during
temporary abandonment of the well
3.1.7
corrosion-resistant alloys
ferrous and non-ferrous alloys which are more corrosion resistant than low al
...