EN ISO 3421:2022

Petroleum and natural gas industries - Drilling and production equipment - Offshore conductor design, setting depth and installation (ISO 3421:2022)

This document specifies the requirements and recommendations for the design, setting depth and installation of conductors for the offshore petroleum and natural gas industries. This document specifically addresses:
—    design of the conductor, i.e. determination of the diameter, wall thickness, and steel grade;
—    determination of the setting depth for three installation methods, namely, driving, drilling and cementing, and jetting;
—    requirements for the three installation methods, including applicability, procedures, and documentation and quality control.
This document is applicable to:
—    platform conductors: installed through a guide hole in the platform drill floor and then through guides attached to the jacket at intervals through the water column to support the conductor, withstand actions, and prevent excessive displacements;
—    jack-up supported conductors: a temporary conductor used only during drilling operations, which is installed by a jack-up drilling rig. In some cases, the conductor is tensioned by tensioners attached to the drilling rig;
—    free-standing conductors: a self-supporting conductor in cantilever mode installed in shallow water, typically water depths of about 10 m to 20 m. It provides sole support for the well and sometimes supports a small access deck and boat landing;
—    subsea wellhead conductors: a fully submerged conductor extending only a few metres above the sea floor to which a BOP and drilling riser are attached. The drilling riser is connected to a floating drilling rig. The BOP, riser and rig are subject to wave and current actions while the riser can also be subject to VIV.
This document is not applicable to the design of drilling risers.

Erdöl- und Erdgasindustrie - Bohr- und Förderausrüstung - Offshore-Leiterauslegung, Setztiefe und Einbau (ISO 3421:2022)

Industries du pétrole et du gaz naturel - Équipements de forage et de production - Conception des tubes conducteurs en mer, profondeur de mise en place et installation (ISO 3421:2022)

Le présent document spécifie les exigences et les recommandations relatives à la conception, la profondeur de mise en place et l'installation des tubes conducteurs destinés aux industries du pétrole et du gaz naturel en mer. Le présent document couvre plus particulièrement les aspects suivants:
—    conception du tube conducteur, c'est-à-dire détermination du diamètre, de l'épaisseur de paroi et de la nuance d'acier;
—    détermination de la profondeur de mise en place pour trois méthodes d'installation, à savoir battage, forage et cimentation, et injection;
—    exigences pour les trois méthodes d'installation, notamment l'applicabilité, les modes opératoires, la documentation et le contrôle qualité.
Le présent document est applicable:
—    aux tubes conducteurs de plate-forme: installés à travers un trou de guidage dans le plancher de forage de la plate-forme, puis à travers les guides fixés à la jacket par intervalles à travers la colonne d'eau pour soutenir le tube conducteur, supporter les actions et empêcher les déplacements excessifs;
—    aux tubes conducteurs soutenus par une plate-forme auto-élévatrice: un tube conducteur temporaire utilisé uniquement lors des opérations de forage, qui est installé par une plate-forme de forage auto-élévatrice. Dans certains cas, le tube conducteur est mis en tension par des dispositifs de mise en tension fixés à l'appareil de forage;
—    aux tubes conducteurs auto-porteurs: un tube conducteur autoportant en porte-à-faux installé dans des eaux peu profondes, habituellement des profondeurs d'eau d'environ 10 m à 20 m. Il fournit le seul soutien au puits et soutient parfois un petit pont d'accès et débarcadère;
—    aux tubes conducteurs de tête de puits sous-marins: un tube conducteur entièrement immergé s'étendant seulement de quelques mètres au-dessus du fond marin et auquel sont fixés un BOP et un riser de forage. Le riser de forage est relié à un appareil de forage flottant. Le BOP, le riser et l'appareil de forage sont soumis aux actions des vagues et des courants, tandis que le tube prolongateur peut également être soumis aux VIV.
Le présent document n'est pas applicable à la conception des risers de forage.

Industrija za predelavo nafte in zemeljskega plina - Vrtalna in proizvodna oprema - Načrtovanje plavajočih vodnikov, nastavitev globine in vgradnja (ISO 3421:2022)

Ta dokument podaja zahteve za načrtovanje, nastavitev globine in vgradnjo vodnikov, ki se uporabljajo v industriji za predelavo nafte in zemeljskega plina na odprtem morju. Ta dokument obravnava:
–   načrtovanje vodnika, tj. določitev premera, debeline stene in vrste jekla;
–   določanje nastavitve globine za tri načine vgradnje, in sicer vgradnjo z zabijanjem, vrtanjem/cementiranjem in vodnim curkom;
–   zahteve glede vgradnje za metode vgradnje, tj. načela izbire, delovne postopke in parametre.
Ta dokument se uporablja za:
–   ploščadne vodnike: vgradijo se skozi vodilno luknjo v odru vrtalne ploščadi in se nato z vodili, nameščenimi v ustreznih razmikih vzdolž vodnega stolpca pritrdijo na plašč tako, da omejujejo vpliv meteoroloških in oceanografskih dejavnikov na vodnike ter preprečujejo prevelike vzdolžne premike;
–   vodnike, podprte z dvigalom: začasni vodniki, ki se uporabljajo samo med postopki vrtanja in jih vgradi dvižna vrtalna ploščad. V nekaterih primerih se vodnik napne z napenjali, ki so pritrjena na vrtalno ploščad;
–   prosto stoječe vodnike: samonosilni kesoni v konzolnem načinu, vgrajeni v plitvih vodah, katerih globina običajno dosega približno od 10 do 20 m. Zagotavlja edino podporo za vrtino ter včasih podpira manjšo ploščad za dostop in privez čolnov;
–   Podvodni vodniki v ustju vrtine: vodniki, ki so v celoti pod vodno gladino in se dvigajo le nekaj metrov nad morskim dnom.
Ta dokument se ne uporablja za dvižne cevi za vrtanje.

General Information

• Status: Published
• Publication Date: 14-Jun-2022
• Withdrawal Date: 30-Dec-2022
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 15-Jun-2022
• Due Date: 28-Jan-2024
• Completion Date: 15-Jun-2022
• Ref Project: SIST EN ISO 3421:2022 - Petroleum and natural gas industries - Drilling and production equipment - Offshore conductor design, setting depth and installation (ISO 3421:2022)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2022
Industrija za predelavo nafte in zemeljskega plina - Vrtalna in proizvodna oprema -
Načrtovanje plavajočih vodnikov, nastavitev globine in vgradnja (ISO 3421:2022)
Petroleum and natural gas industries - Drilling and production equipment - Offshore
conductor design, setting depth and installation (ISO 3421:2022)
Erdöl- und Erdgasindustrie - Bohr- und Förderausrüstung - Offshore-Leiterauslegung,
Setztiefe und Einbau (ISO 3421:2022)
Industries du pétrole et du gaz naturel - Équipements de forage et de production -
Conception des tubes conducteurs en mer, profondeur de mise en place et installation
(ISO 3421:2022)
Ta slovenski standard je istoveten z: EN ISO 3421:2022
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 3421
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 75.180.10
English Version
Petroleum and natural gas industries - Drilling and
production equipment - Offshore conductor design, setting
depth and installation (ISO 3421:2022)
Industries du pétrole et du gaz naturel - Équipements Erdöl- und Erdgasindustrie - Bohr- und
de forage et de production - Conception des tubes Förderausrüstung - Offshore-Leiterauslegung, Setztiefe
conducteurs en mer, profondeur de mise en place et und Einbau (ISO 3421:2022)
installation (ISO 3421:2022)
This European Standard was approved by CEN on 27 May 2022.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3421:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 3421:2022) 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 NEN.
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 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 3421:2022 has been approved by CEN as EN ISO 3421:2022 without any modification.

INTERNATIONAL ISO
STANDARD 3421
First edition
2022-06
Petroleum and natural gas
industries — Drilling and production
equipment — Offshore conductor
design, setting depth and installation
Industries du pétrole et du gaz naturel — Équipements de forage
et de production — Conception des tubes conducteurs en mer,
profondeur de mise en place et installation
Reference number
ISO 3421:2022(E)
ISO 3421:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 3421:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms.3
4.1 Symbols . 3
4.1.1 Symbols for conductor design . 3
4.1.2 Symbols for setting depth . 5
4.2 Abbreviated terms . 7
5 General requirements . 7
5.1 General . 7
5.2 Limit states for conductor design . 7
5.3 Setting depth requirements. 8
5.4 Installation requirements . 8
5.5 Design situations . 8
6 Design parameters .8
6.1 General . 8
6.2 Metocean parameters . 8
6.3 Ice parameters . 9
6.4 Seismic parameters . 9
6.5 Soil parameters . 9
6.6 Engineering design parameters . 9
6.6.1 Platform parameters . 9
6.6.2 Well operations parameters . . 10
7 Conductor design .11
7.1 General . 11
7.2 Actions . 11
7.2.1 General . 11
7.2.2 Permanent actions (G) . 11
7.2.3 Variable actions (Q) .12
7.2.4 Deformation actions (D) .12
7.2.5 Accidental actions (A) .12
7.2.6 Environmental actions .12
7.3 Partial factors for actions . 13
7.4 Boundary restraints . 14
7.4.1 General . 14
7.4.2 Platform conductors . . 14
7.4.3 Jack-up supported conductors . . 15
7.4.4 Free-standing conductors . 15
7.4.5 Subsea wellhead conductors . 15
7.5 Strength and stability checks . 15
7.5.1 General .
...