GB/T 21412.2-2022Petroleum and natural gas industries - Design and operation of subsea production systems - Part 2:UNbonded flexible pipe systems for subsea and marine applications (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting:

This document is Part 2 of GB/T 21412 "Design and Operation of Subsea Production Systems for the Oil and Gas Industry", GB/T 21412 the following parts have been published:

--- Part 1: General requirements and recommended practices;

--- Part 2: Unbonded flexible pipe systems;

--- Part 3: Through flowline (TFL) system;

--- Part 4: Subsea wellhead and Christmas tree equipment;

--- Part 5: Subsea umbilical cables;

--- Part 6: Subsea production control system;

--- Part 7: Completion or workover riser systems;

--- Part 8: Subsea robot (ROV) interface of subsea production system;

--- Part 9: Remotely operated tool (ROT) maintenance system;

--- Part 10: Bonded Flexible Pipe Specifications;

--- Part 11: Recommended practices for flexible pipe systems;

--- Part 15: Subsea structures and manifolds:

This document replaces GB/T 21445.2-2008 "Design and operation of subsea production systems for the oil and gas industry - Part 2: Use Flexible pipe systems on the seabed and offshore", compared with GB/T 21445.2-2008, except for structural adjustments and editorial changes, the main technical changes See Appendix A for details:

This document is modified to adopt ISO 13628-2:2006 "Design and operation of subsea production systems for the oil and gas industry - Part 2: Use Unbonded Flexible Pipe Systems on the Subsea and Offshore":

Compared with ISO 13628-2:2006, this document has more structural adjustments, and the structure number changes between the two documents are compared at a glance See Appendix B for the table:

Compared with ISO 13628-2:2006, this document has more technical differences, and vertical the straight line (|) is marked, and the list of these technical differences and their reasons is shown in Appendix C:

The following editorial changes have been made to this document:

--- In order to coordinate with the existing documents, the name of the document was changed to "Design and Operation of Subsea Production Systems for the Oil and Gas Industry Part 2 Part: Unbonded flexible pipe system";

---Incorporated the errata content of ISO 13628-2:2006/Cor:1:2009, the outer margins of the terms involved are marked with vertical Straight double lines (||) are marked:

Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:

Introduction

The subsea production system consists of one or more subsea wellheads producing oil and gas, and the given processing facilities (fixed platforms, floating facilities, Subsea facilities), or various subsystems such as onshore treatment facilities, or subsea wellheads developed through water/gas injection: GB/T 21412 "Design and Operation of Subsea Production Systems for the Oil and Gas Industry" covers subsea production systems and their subsystems, as well as various interfaces and maintenance systems:

system, protection system, etc:, providing a design framework, recommended practices and guidelines for use, and is planned to be composed of fifteen parts:

--- Part 1: General requirements and recommended practices: The aim is to develop and apply subsea production systems for various fields of the oil and gas industry Provides general requirements, recommended practices, and usage guidelines:

--- Part 2: Unbonded flexible pipe systems: The purpose is to provide recommendations for unbonded flexible pipe system products in subsea production systems practice:

--- Part 3: Through flowline (TFL) system: The purpose is to support the design, manufacture and operation of TFL systems in non-subsea production systems to provide recommended practices:

--- Part 4: Subsea wellhead and Christmas tree equipment: The purpose is to provide subsea wellheads and Christmas trees in subsea production systems Product equipment provides recommended practices:

--- Part 5: Subsea umbilical cables: The purpose is to provide recommended practices and use of subsea umbilical products in subsea production systems guide:

--- Part 6: Subsea production control system: The purpose is to provide recommendations for subsea production control system products in subsea production systems practice:

--- Part 7: Completion or workover riser systems: The purpose is to provide well completion or workover riser system products in subsea production systems Provides recommended practices and gives requirements and recommendations for installation from floating installations:

--- Part 8: Subsea robot (ROV) interface for subsea production systems: Intended for ROV interface to subsea production systems Put forward technical requirements:

--- Part 9: Remotely operated tool (ROT) maintenance system: The purpose is to provide ROT repair system and interface in subsea production system Functional requirements and recommended practices for port devices:

--- Part 10: Bonded Flexible Pipe Specifications: The purpose is to provide recommendations for bonded flexible pipe products in subsea production systems practice:

--- Part 11: Recommended practices for flexible pipe systems: The purpose is to provide recommendations for flexible pipe system products in subsea production systems laws and guidelines for use:

--- Part 12: Dynamic production riser: The aim is to provide recommended practices for dynamic production riser design in subsea production systems:

--- Part 13: Subsea production system remote operation tools and interfaces: The purpose is to develop and design remotely operated subsea tools and underwater Recommended practices are provided under Production System Interfaces:

--- Part 14: Underwater high integrity pressure protection system: Intended for high integrity pressure protection systems used in subsea applications Provide recommended practices:

--- Part 15: Subsea structures and manifolds: The purpose is to provide recommendations for subsea structures and manifold products in subsea production systems practice:

The flexible pipe is mainly composed of a pipe body and end fittings, in which the pipe body is a pressure-bearing pipe made of multi-layer materials: Flexible tubing usually has it has lower bending stiffness and high axial tensile stiffness, and has a smaller bending radius than steel pipes with the same internal pressure resistance: This document stipulates Together with GB/T 21412.11-2019 and GB/T 21412.10-2019, all aspects of flexible pipe technology are stipulated: The three See the description in 4:1:2 of GB/T 21412.11-2019 for the relationship between them:

This revision is based on ISO 13628-2:2006 "Design and operation of subsea production systems for the oil and gas industry - Part 2: Use Unbonded Flexible Pipe Systems on the Subsea and Offshore": Since this document has been published for many years, many technical contents have undergone new changes, this document is in the document has been extensively revised to accommodate technological developments:

oil and gas industry Design and operation of subsea production systems Part 2: Unbonded flexible pipe systems

1 Scope

This document specifies requirements for unbonded flexible pipe design, materials, fabrication, testing, documentation, marking, and packaging:

This document is applicable to non-adhesive flexible pipes with end fittings with sweet and acidic working medium (including oil, gas, water and various chemicals, etc:) Pipelines, including static and dynamic subsea pipelines, risers and jumpers:

This document does not apply to bonded flexible pipe and flexible pipe containing non-metallic tensile and compressive armor wires, choke and kill line jumpers, and Accessory parts for flexible pipes:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references for documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document:

GB/T 228 (all parts) Tensile test of metallic materials [ISO 6892 (all parts)] Note: GB/T 228.1-2021 Tensile test of metallic materials Part 1: Test method at room temperature (ISO 6892-1:2019, MOD);

GB/T 228.2-2015 Tensile tests on metallic materials - Part 2: High temperature test methods (ISO 6892-2:2011, MOD);

GB/T 228.3-2019 Tensile tests on metallic materials - Part 3: Low temperature test methods (ISO 6892-3:2015, MOD);

GB/T 228.4-2019 Tensile tests on metallic materials - Part 4: Liquid helium test methods (ISO 6892-4:2015, MOD):

GB/T 230.1 Rockwell hardness test for metallic materials - Part 1: Test method (GB/T 230.1-2018, ISO 6508-1:

2016, MOD)

GB/T 231.1 Brinell hardness test for metallic materials - Part 1: Test method (GB/T 231.1-2018, ISO 6506-1:

2014, MOD)

GB/T 1033 (all parts) Determination of density of plastics, non-foamed plastics [ISO 1183 (all parts)] Note: GB/T 1033.1-2008 Determination of density of plastics and non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method (ISO 1183-1:

2004, IDT);

GB/T 1033.2-2010 Determination of density of plastics and non-cellular plastics - Part 2: Density gradient column method (ISO 1183-2:2004, MOD);

GB/T 1033.3-2010 Determination of density of plastics and non-cellular plastics - Part 3: Gas pycnometer method (ISO 1183-3:1999, IDT):

GB/T 1034 Determination of water absorption of plastics (GB/T 1034-2008, ISO 62:2008, IDT) GB/T 1040.1 Determination of tensile properties of plastics - Part 1: General principles (GB/T 1040.1-2018, ISO 527-1:

2012, IDT)

GB/T 1040.2 Determination of tensile properties of plastics - Part 2: Test conditions for molded and extruded plastics (GB/T 1040.2-2006, ISO 527-2:1993, MOD) GB/T 1041 Determination of compression properties of plastics (GB/T 1041-2008, ISO 604:2002, IDT)