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BS EN ISO 3421:2022

BS EN ISO 3421:2022

$189.07

Petroleum and natural gas industries. Drilling and production equipment. Offshore conductor design, setting depth and installation

Published By Publication Date Number of Pages
BSI 2022 48
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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.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
Endorsement notice
8 Foreword
9 Introduction
10 1 Scope
2 Normative references
11 3 Terms and definitions
12 4 Symbols and abbreviated terms
4.1 Symbols
4.1.1 Symbols for conductor design
14 4.1.2 Symbols for setting depth
16 4.2 Abbreviated terms
5 General requirements
5.1 General
5.2 Limit states for conductor design
17 5.3 Setting depth requirements
5.4 Installation requirements
5.5 Design situations
6 Design parameters
6.1 General
6.2 Metocean parameters
18 6.3 Ice parameters
6.4 Seismic parameters
6.5 Soil parameters
6.6 Engineering design parameters
6.6.1 Platform parameters
19 6.6.2 Well operations parameters
20 7 Conductor design
7.1 General
7.2 Actions
7.2.1 General
7.2.2 Permanent actions (G)
21 7.2.3 Variable actions (Q)
7.2.4 Deformation actions (D)
7.2.5 Accidental actions (A)
7.2.6 Environmental actions
22 7.3 Partial factors for actions
23 7.4 Boundary restraints
7.4.1 General
7.4.2 Platform conductors
24 7.4.3 Jack-up supported conductors
7.4.4 Free-standing conductors
7.4.5 Subsea wellhead conductors
7.5 Strength and stability checks
7.5.1 General
7.5.2 Design method
7.5.3 Axial compression
26 7.5.4 Bending
27 7.5.5 Shear
7.5.6 Combined stress
28 7.6 Fatigue
29 8 Setting depth
8.1 General
8.2 Setting depth for fluid circulation channel
30 8.3 Setting depth for wellbore structural foundation
8.3.1 General
8.3.2 Installation by driving, drilling and cementing
33 8.3.3 Installation by jetting
35 9 Installation
9.1 General
9.2 Driving
9.2.1 Applicability
9.2.2 Driveability analysis
9.2.3 Installation procedures
36 9.2.4 Pile group conductor driving sequence
9.2.5 Data documentation
9.2.6 Quality
37 9.3 Drilling and cementing
9.3.1 Applicability
9.3.2 Size match of bit and conductor
9.3.3 Wait on cement
9.3.4 Quality
9.4 Jetting
9.4.1 Applicability
9.4.2 Size match of bit and conductor
38 9.4.3 Jetting bottom hole assembly
9.4.4 Jetting procedure
9.4.5 Jetting operating parameters
9.4.6 Data recording
39 9.4.7 Quality
40 Annex A (informative) Additional information and guidelines
44 Bibliography

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BS EN ISO 3421:2022
$189.07