Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 22513-2013 Petroleum and natural gas industries - Drilling and production equipment - Wellhead and christmas tree equipment. In addition to structural adjustments and editorial changes, the following main technical changes have been made with respect to GB/T 22513-2013:
a) Some definitions have been added (see Clause 3 hereof);
b) Material code 95K has been added (see Clause 7 hereof);
c) Changes have been made to the contents on quality control and a separate clause is prepared for the factory acceptance test (see Clauses 11 and 12 hereof; Clause 7 of Edition 2013);
d) Some flange and valve specifications have been added (see 15.2 hereof);
e) Stem requirements have been added (see 15.12.2.1 hereof);
f) Hardening process requirements for valve sealing mechanism have been added (see 15.12.3.4 hereof);
g) Fracturing head multi-port has been added (see 15.20 hereof);
h) Contents on repair and remanufacture have been deleted (see Clause 11 and Annex N of Edition 2013).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and is under the jurisdiction of SAC/TC 96 National Technical Committee on Oil Drilling and Extracting Equipment and Tools of Standardization Administration of China.
This document was issued in 2008 as the first edition, its first revision was issued in 2013, and this is the second revision.
Petroleum and natural gas drilling and production equipment -
Wellhead and tree equipment
1 Scope
This document specifies the requirements for service performance, design, materials, welding, bolting, packing mechanisms, fitting, pressure-boundary penetration and end joints, quality control, factory acceptance testing, marking, storage and transportation, special requirements for equipment and records for wellhead and tree equipment used in the petroleum and natural gas industry.
This document is applicable to the following specific equipment.
a) Bull plugs, fastenings and pad rings as defined in this document:
1) Flanged end and outlet connectors (see 15.2);
2) Sealing pad rings (see 15.3);
3) Threaded end and outlet connectors (see 15.4);
4) Tee, cross and fracturing head multi-ports (see 15.5 and 15.20);
5) Bull plugs (see 15.6);
6) Valve-removal plugs (see 15.7);
7) Christmas tree top connectors (see 15.8).
b) Non-standard bull plugs and connectors:
1) Non-standard christmas tree top connectors (see 15.8);
2) Cross-over connectors (single-stud or multi-stud, single-stage or multi-stage) (see 15.9);
3) Other end connectors (see 15.10);
4) Reducer connecting cross and transition cross (see 15.11).
c) Valves:
1) Single valves (see 15.12);
2) Manifold valves (see 15.12);
3) Actuating valves (see 15.12);
4) Actuator preparation valves (see 15.12);
5) Check valves (see 15.12);
6) Back-pressure valves (see 15.13).
d) Casing hangers and tubing hangers:
1) Mandrel-type hangers (see 15.14);
2) Slip-type hangers (see 15.14).
e) Casting-head housing and tubing-(casing-) head crosses (see 15.15).
f) Choke (see 15.16).
g) Actuators (see 15.17).
h) Safety valves, boarding shutdown valves and actuators (see 15.18):
1) Surface safety valve assembly, actuator preparation valves and actuators;
2) Underwater safety valve assembly, actuator preparation valves and actuators;
3) Boarding shutdown valve assembly, actuator preparation valves, actuators.
i) Christmas trees (see 15.19).
j) Other equipment:
1) Packing mechanism for locking screws, locating pins and setting screws;
2) Fittings and pressure-boundary penetration and crossing devices;
3) Testing, instrumentation, discharging and injection connectors;
4) Welding neck flanges.
This document is not applicable to field service or field testing of wellhead equipment and christmas trees, or repair of wellhead equipment and christmas trees, except for welding repairs related to manufacturing. This document is also not applicable to wellhead or christmas tree installation tools or service tools such as human tools, cleaning tools, wear bushings, test tools and oil ejectors.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions 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.
GB/T 193 General purpose metric screw threads - General plan
GB/T 197 General purpose metric screw threads - Tolerances
GB/T 228.1 Metallic materials -Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 230 (all parts) Metallic materials - Rockwell hardness test
GB/T 231 (all parts) Metallic materials - Brinell hardness test
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
CB/T 531 (all parts) Rubber, vulcanized or thermoplastic - Determination of indentation hardness
GB/T 1690 Rubber,vulcanized or thermoplastic - Determination of the effect of liquids
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
GB/T 3452.1 Fluid power systems - O-rings - Part 1: Inside diameters, cross-sections, tolerances and size identification code
GB/T 4340 (all parts) Metallic materials - Vickers hardness test
GB/T 5677 Castings - Radiographic testing
GB/T 5720 Test methods for rubber O-rings
GB/T 5796 (all parts) Trapezoidal screw threads
GB/T 7233.2 Steel castings - Ultrasonic testing - Part 2: Steel castings for highly stressed components
GB/T 7759 (all parts) Rubber, vulcanized or thermoplastic - Determination of compression set
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 8423.5 Petroleum and natural gas industries terminology - Part 5: Equipment and material
GB/T 9253 Petroleum and natural gas industries - Threading, gauging and thread inspection of casing, tubing, and line pipe threads
GB/T 9443 Steel and iron castings - Liquid penetrant inspection
GB/T 9444 Steel and iron castings - Magnetic particle inspection
GB/T 9445 Non-destructive testing - Qualification and certification of NDT personnel
GB/T 9452 Test method for qualified work zone of heat treatment furnace
GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads
GB/T 13927 Industrial valves - Pressure testing
GB/T 16783.1 Petroleum and natural gas industries - Field testing of drilling fluids - Part 1: Water-based fluids
GB/T 17600.1 Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels
GB/T 19356 Thermal spraying - Powders - Composition and technical supply conditions
GB/T 19805 Qualification test of welding operators
GB/T 19830 Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells
GB/T 20174 Petroleum drilling and production equipment - Drill-through equipment
GB/T 20666 Unified screw threads - Tolerances
GB/T 20670 Unified screw threads - General plan
GB/T 20972 (all parts) Petroleum and natural gas industries - Material for use in H2S-containing environments in oil and gas production
GB/T 21412.4 Petroleum and natural gas industries - Design and operation of subsea production systems - Part 4: Subsea wellhead and tree equipment
GB/T 23512 Petroleum and natural gas industries - Evaluation and testing of thread compounds for use with casing, tubing, line pipe and drill stem elements
GB/T 26482 Fire type-testing requirement for check valves
GB/T 33362 Metallic materials - Conversion of hardness values
GB/T 34903 (all parts) Petroleum, petrochemical and natural gas industries - Non-metallic materials in contact with media related to oil and gas production
GB/T 37400.14 Heavy mechanical general technical specification - Part 14: Nondestructive test of steel castings
GB/T 37400.15 Heavy mechanical general technical specification - Part 15: Nondestructive test of steel forgings
JB/T 4732 Steel pressure vessels - Design by analysis
JB/T 6438 Technical requirements for plasma arc overlaying welding for valve sealing surface
JB/T 8467 Ultrasonic testing for steel forgings
NB/T 47013.1 Nondestructive testing of pressure equipments - Part 1: General requirements
NB/T 47013.2 Nondestructive testing of pressure equipments - Part 2: Radiographic testing
NB/T 47013.3 Nondestructive testing of pressure equipments - Part 3: Ultrasonic testing
NB/T 47013.5 Nondestructive testing of pressure equipment - Part 5: Penetrant testing
NB/T 47014 Welding procedure qualification for pressure equipment
SY/T 5328 Petroleum and natural gas industries drilling and production equipment - Wellhead for thermal recovery wells
SY/T 5715 Carbon steel, alloy steel, stainless steel, and nickel base alloy casting for use in petroleum and natural gas industry
SY/T 6745 Specification for fire test for end connection
SY/T 6960 Testing of valves - Fire type-testing requirements
SY/T 7085 Design calculations for pressure - containing equipment
SY/T 7390 Age-hardened nickel-based alloys for oil and gas drilling and production equipment
SY/T 7606 Petroleum drilling and production equipment - Alloy and carbon steel bolting
SY/T 7653 Petroleum natural gas drilling and production equipment - Corrosion-resistant bolting
SY/T 10010 Recommended practice for design, installation and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and Class I, Division 1 and Division 2 locations
YS/T 527 Ni-Cr-B-Si self-fluxing alloyed powders
ISO 3834-3 Quality requirements for fusion welding of metallic materials - Part 3: Standard quality requirements
ISO 9606-1 Qualification testing of welders - Fusion welding - Part 1: Steels
ISO 15609-1 Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding
ISO 15614-7 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 7: Overlay welding
ISO 18265 Metallic materials - Conversion of hardness values
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 8423.5 and the following apply.
Foreword IV
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviations
5 Service performance
5.1 General
5.2 Service conditions
6 Design
6.1 Design methods
6.2 Design tolerances
6.3 Design documents
6.4 Design review and design verification
6.5 Design qualification
7 Materials
7.1 General
7.2 Written specification
7.3 Body, bonnet, end and outlet connectors
7.4 Qualification test coupons (QTC)
7.5 Heat treatment equipment qualification
8 Welding
8.1 General provisions
8.2 Welding of non-pressure-containing parts except overlay
8.3 Fabrication weld of pressure-containing parts
8.4 Patch weld of pressure-containing parts
8.5 Overlay
9 Bolting
9.1 Closure bolting
9.2 Closure bolting for flanged or studded end and outlet connections
9.3 Closure bolting for others
10 Packing mechanism, fitting, pressure-boundary penetration and end joints
10.1 Packing mechanism for locking screws, locating pins and setting screws
10.2 Pressure-boundary penetration and fittings
10.3 Test, instrument, bleeding and injection connectors
11 Quality control
11.1 General requirements
11.2 Measurement and test apparatus
11.3 Personnel qualification
11.4 Quality control requirements for apparatus
12 Factory acceptance test (FAT)
12.1 General
12.2 Hydrostatic test
12.3 Air seal tests - PSL3G, PSL4
12.4 Path test
13 Marking
13.1 Requirements
13.2 Methods
13.3 Nameplate
13.4 Marking of covered areas
13.5 Marking of threads
13.6 Marking of specifications
13.7 Marking of temperature
13.8 Marking of hardness test
13.9 Marking of grooves for pad rings
13.10 Clamp hub end connection
14 Storage and transportation
14.1 Discharge after test
14.2 Corrosion resistance
14.3 Sealing surface protection
14.4 Assembly and maintenance instructions
14.5 Sealing pad ring
14.6 Aging control of non-metallic sealing parts
15 Special requirements for apparatus
15.1 General
15.2 Flanged end and outlet connectors
15.3 Sealing pad ring
15.4 Threaded end and outlet connectors
15.5 Tee and cross
15.6 Bull plug
15.7 Valve-removal plug
15.8 Top connector
15.9 Cross-over connector
15.10 Other end connectors (OEC)
15.11 Adapter spool and transition spool
15.12 Valve
15.13 Back-pressure valve
15.14 Casing hanger and tubing hanger (mandrel-type and slip-type)
15.15 Casing-head housing and tubing-(casing-) head spool
15.16 Choke
15.17 Actuator
15.18 Safety valves, boarding shutdown valves (BSDV) and actuators
15.19 Christmas tree
15.20 Fracturing head multiport
16 Records
16.1 General
16.2 Records to be kept by manufacturers
16.3 Records to be provided to users
16.4 Records of surface safety valves (SSV), underwater safety valves (USV) and boarding shutdown valves (BSDV)
Annex A (Informative) Recommended practice for product specification level (PSL)
Annex B (Informative) Ordering guidelines
Annex C (Informative) Design and rating determination for high temperature installations
Annex D (Informative) Heat treatment equipment qualification
Annex E (Informative) Recommended design dimensions for weld preparation
Annex F (Normative) PR2 design qualification procedure (PR2F)
Annex G (Informative) Recommended closure bolt assemblies
Annex H (Informative) Recommended bolt length
Annex I (Normative) Welding neck flanges
Annex J (Normative) Fan-shaped flanges
Annex K (Normative) Top connectors
Annex L (Informative) Technical requirements for supersonic spraying tungsten carbide
Annex M (Normative) Design qualification procedures for safety valves
Bibliography
