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GB/T 21412.7-2018Petroleum and natural gas industries -- Design and operation of subsea production systems -- Part 7: Completion/workover riser systems (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 15, 2018

Implementation date

October 1, 2018

Scope

GB/T 21412.7-2018 (Petroleum and natural gas industries -- Design and operation of subsea production systems -- Part 7: Completion/workover riser systems) is available as an English-translated PDF.

GB/T 21412.7-2018 — This part of GB/T 21412 specifies the design, analysis, materials, manufacturing, testing and design of underwater completion or workover (C/WO) riser systems. Requirements and recommendations for installation from floating installations. This section applies to all new completion or workover riser systems, as well as adjustments and operations for existing systems, as well as Reuse of locations and different floating installations. This section is limited to risers made of low alloy carbon steel. Made of special materials such as titanium and composite materials The riser made of flexible pipe is outside the scope of this section. This section includes the following equipment. ---Water pipe single root; ---Connector; ---Workover control system; --- Ground flow test tree; --- Ground test tree lifting frame; ---The lower workover riser assembly; ---Blowout valve; ---Conduit valve; ---Underwater test tree; ---Cut short section; ---Tubing hanging positioning system; ---Drilling faucet; --- Annulus circulation hose; ---Water separator chuck; ---Umbilical cord cable clamp; ---Installation and testing tools; ---The tree hat is placed under the tool. The relevant equipment not included in this section is as follows. ---Tubing hanging; ---The inner and outer caps of the tree; ---Tubing hanging into the tool; --- Ground coiled tubing system; ---Ground cable operating system; --- Ground test tree killing and production of jumper.

Document preview — GB/T 21412.7-2018

National Standard of the People's Republic of China

ICS: 75.180.10
Classification: E 94

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 terms, definitions, abbreviations and symbols
3.1 Terms and definitions

Foreword

GB/T 21412 "Design and Operation of Underwater Production System for Oil and Gas Industry" is divided into fifteen parts.

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

--- Part 2. Flexible pipe systems for subsea and offshore;

--- Part 3. Over-the-out pipe (TFL) system;

--- Part 4. Underwater wellhead installations and tree equipment;

--- Part 5. Underwater umbilical cable;

---Part 6. Underwater production control system;

--- Part 7. Completion or workover riser system;

--- Part 8. Underwater robot (ROV) interface for underwater production systems;

---Part 9. Remote Operation Tool (ROT) Maintenance System;

---Part 10. Adhesive flexible pipe specifications;

--- Part 11. Flexible pipe systems for seabed and ocean;

--- Part 12. Dynamic production riser;

--- Part 13. Remote operation tools and interfaces for underwater production systems;

--- Part 14. Underwater high integrity pressure protection system;

--- Part 15. Underwater structures and manifolds.

This part is part 7 of GB/T 21412.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This section uses the translation method equivalent to ISO 13628-7.2005 "Design and operation of the underwater production system of the oil and gas industry.

Part 7. Completion or workover riser system (English version).

The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.

---GB/T 20972 (all parts) Oil and gas industry oil and gas mining for materials containing hydrogen sulfide

[ISO 15156 (all parts)]

---GB/T 22513-2013 Oil and gas industry drilling and production equipment wellhead facilities and tree equipment

(ISO 10423.2009, MOD)

---GB/T 28259-2012 Oil and gas industry downhole equipment downhole safety valve equipment (ISO 10432.2004,

MOD)

This part is proposed and managed by the National Oil and Gas Standardization Technical Committee (SAC/TC355).

This section drafted by. CNOOC Research Institute.

1 Scope

This part of GB/T 21412 specifies the design, analysis, materials, manufacturing, testing and design of underwater completion or workover (C/WO) riser systems.

Requirements and recommendations for installation from floating installations.

This section applies to all new completion or workover riser systems, as well as adjustments and operations for existing systems, as well as

Reuse of locations and different floating installations. This section is limited to risers made of low alloy carbon steel. Made of special materials such as titanium and composite materials

The riser made of flexible pipe is outside the scope of this section.

This section includes the following equipment.

---Water pipe single root;

---Connector;

---Workover control system;

--- Ground flow test tree;

--- Ground test tree lifting frame;

---The lower workover riser assembly;

---Blowout valve;

---Conduit valve;

---Underwater test tree;

---Cut short section;

---Tubing hanging positioning system;

---Drilling faucet;

--- Annulus circulation hose;

---Water separator chuck;

---Umbilical cord cable clamp;

---Installation and testing tools;

---The tree hat is placed under the tool.

The relevant equipment not included in this section is as follows.

---Tubing hanging;

---The inner and outer caps of the tree;

---Tubing hanging into the tool;

--- Ground coiled tubing system;

---Ground cable operating system;

--- Ground test tree killing and production of jumper.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

IEC 60089-0 Electrical equipment for explosive atmospheres - Part 0. General requirements, fourth edition (Electricalapparatusfor

explosivegasatmospheres-Part0.GeneralRequirements,FourthEdition)

ISO 148 steel Charpy impact test (V-shaped cut) [Steel-Charpyimpacttest (V-notch)]

ISO 377 Steel and Steel Products Mechanical Properties Test Sampling Location and Sample Preparation (Steelandsteelproducts-Location

Andpreparationofsamplesandtestpiecesformechanicaltesting)

ISO 783 metal material high temperature tensile test (Metalicmaterials-Tensiletestingatelevatedtemperature)

Carbon steel and cast steel - Casting fasteners - Mechanical properties - Part 1. Bolts, screws and studs (Mechanicalproper-

tiesoffastenersmadeofcarbonsteelandaloysteel-Part 1.Bolts,screwsandstuds)

Mechanical properties of fasteners - Part 2. Nuts with specified test load values - coarse thread (Mechanical

propertiesoffasteners-Part 2. Nutswithspecifiedproofloadvalues-Coarsethread)

ISO 1461 Specification for hot dip galvanized coatings and test methods for iron and steel preforms (Hotdipgalvanizedcoatingsonfabri-

catedironandsteelarticles-Specificationsandtestmethods)

ISO 2566-1 Conversion of steel elongation values Part 1. Carbon steel and low alloy steel (Steel-Conversion of elongation

values-Part 1. Carbonandlowaloysteels)

ISO 3183 (all parts) Oil and gas industry pipeline steel pipe supply technical conditions (Petroleumandnaturalgas

industries-Steelpipeforpipelines-Technicaldeliveryconditions)

ISO 4885 Iron Products Heat Treatment Vocabulary (Ferrousproducts-Heattreatment-Vocabulary)

ISO 6507-1 Metallic materials - Vickers hardness test - Part 1 . Test method (Metalicmaterials-Vickers

hardnesstest-Part 1. Testmethod)

ISO 6892 metal material ambient temperature tensile test (Metalicmaterials-Tensiletestingatambienttemper-

Nature)

Steel forgings and rolled or forged pipes for pressure applications - Part 1 . General requirements (Steel

forgingsandroledorforgedbarsforpressurepurposes-Technicaldeliveryconditions-Part 1.Gen-

Eralrequirements)

ISO 9606-1 welder acceptance test fusion welding Part 1. Steel (Approvaltestingofwelders-Fusionweld-

ing-Part 1. Steels)

ISO 9712 non-destructive testing personnel qualification and certification (Non-destructive testing-Qualificationandcertifi-

Cationofpersonnel)

ISO 10423 Oil and gas industry drilling and production equipment wellhead facilities and tree equipment (Petroleumand

naturalgasindustries-Drilingandproductionequipment-Welheadandchristmastreeequipment)

ISO 10432 Underground safety valve equipment for underground equipment in the oil and gas industry (PetroleumAndNaturalGasIndus-

tries-DownholeEquipment-SubsurfaceSafetyValveEquipment)

ISO 10474 Steel and Steel Products Inspection Document (Steelandsteelproducts-Inspectiondocuments)

ISO 10945 Hydraulic Transmission Pressure Accumulator Valve Dimensions (Hydraulicfluidpower-Gas-loadedaccumula-

tors-Dimensionsofgasports)

ISO 11960.2004 oil and gas industry oil well casing and tubing steel pipe (Petroleum and naturalgasindus-

tries-Steelpipesforuseascasingortubingforwels-Specification)

ISO 11961 oil and gas industry steel pipe for drill pipe - Specification (Petroleum and naturalgasindustries-Steel

Pipesforuseasdrilpipe-Specification)

ISO 13533 Oil and gas industry drilling and production equipment drilling equipment drilling equipment (Petroleumandnatural

gasindustries-Drilingandproductionequipment-Dril-throughequipment)

ISO 13535 Oil and gas industry drilling and production equipment lifting equipment (Petroleum and naturalgasin-

dustries-Drilingandproductionequipment-Hoistingequipment)

ISO 13628-2 Design and operation of underwater production systems for the oil and gas industry - Part 2.

Sexual tube system (Petroleum and naturalgasindustries-Designandoperationofsubseaproductionsystems-

Part 2. Unbondedflexiblepipesystemsforsubseaandmarineapplications)

ISO 13628-4.1999 Design and operation of underwater production systems - Part 4. Underwater wellheads

And tree equipment (Petroleum and naturalgasindustries-Designandoperationofsubseaproductionsys-

tem-Part 4. Subseawelheadandtreeequipment)

ISO 13628-5.2002 Design and operation of underwater production systems - Part 5. Underwater umbilical

(Petroleum and naturalgasindustries-Designandoperationofsubseaproductionsystem-Part 5.

Subseaumbilicals)

ISO 13628-6.2000 Design and operation of underwater production systems - Part 6.

System (Designandoperationofsubseaproductionsystem -Part 6.Subseaproductioncontrolsystem)

ISO 14693 Oil and gas industry drilling and downhole equipment (Petroleum and naturalgasindustries-Dril-

Ingandwel-servicingequipment)

ISO 15156 (all parts) Materials used in oil and gas industry for oil and gas production (Petroleumand)

naturalgasindustries-MaterialsforuseinH2S-containingenvironmentsinoilandgasproduction)

ISO 15579 Metallic Materials Low Temperature Tensile Test (Metalicmaterials-Tensiletestingatlowtemperature)

ISO 17025 calibration and testing laboratory capability requirements (Generalrequirementsforthecompetenceoftesting

Andcalibrationlaboratories)

APISpec16C Throttling and Killing System (Specificationforchokeandkilsystems)

APIRP17B Flexible Pipe Recommended Practice (Recommendedpracticeforflexiblepipe)

ASME Boiler and Pressure Vessel Code, Volume VIII..2001, Volume 1. Pressure Vessel Construction Rules (Boilerandpressure

Vesselcode, Section VIII..2001, Rulesforconstructionofpressurevessels, Division1)

ASME Boiler and Pressure Vessel Code, Volume IX..2001, Welding and Brazing Assessment (Boilerandpressurevesselcode,

Section IX..2001, Weldingandbrazingqualification)

ASTMA193 alloy steel and stainless steel bolt material at high temperatures (Standardspecificationforaloy-steelandstain-

Lesssteelboltingmaterialsforhigh-temperatureservice)

ASTMA194 Standard Specification for Carbon Steel and Alloy Steel Nuts for High Temperature and High Pressure Bolts (Standardspecificationfor

Carbonandaloysteelnutsforboltsforhighpressureandhightemperatureservice)

ASTMA320 alloy steel and stainless steel bolt material at low temperatures (Standardspecificationforaloy-steelandstain-

Lesssteelboltingmaterialsforlow-temperatureservice)

Standard Test Methods and Definitions for Mechanical Testing of ASTMA370 Steel Products (Standardtestmethodsanddefinitionsfor

Mechanicaltestingofsteelproducts)

Standard Specification for Tempered and Quenched Vacuum Carbon Steel and Alloy Steel Forgings for ASTMA508 Pressure Vessels (Standard)

Specificationforquenchedandtemperedvacuum-treatedcarbonandaloysteelforgingsforpressure

Vessels)

Hydraulic fluid power-loaded accumulators - Part 1 . Specification for seamless steel accumulators

(Hydro-pneumaticaccumulatorsforfluidpowerpurposes-Part 1.Specificationforseamlesssteelac-

Cumululatorbodiesabove0,5lwatercapacity)

EN287-1 Welding wage test fusion welding Part 1. Steel (Qualificationtestofwelders-Fusionwelding-

Part 1. Steels)

EN288 Welding procedure specification and approval for metal materials (Specificationandapprovalofweldingproceduresforme-

Talicmaterials)

EN1418 Welding operator welding of metal materials for all-mechanical welding and welding and welding of resistance welding positioners

Approval test for personnel (Weldingpersonnel-Approvaltestingofweldingoperatorsforfusionweldingand

Resistanceweldsettersforfulymechanizedandautomaticweldingofmetalicmaterials)

Standard marking method for MSSSP-25 valves, fittings, flanges and pipe connections (Standardmarkingsystemsforvalves,

Fittings,flangesandunions)

SAEAS4059 Aerospace hydraulic systems for cleanliness of hydraulic fluids (Aerospacefluidpower-Cleanliness

Classificationforhydraulicsystems)

3 terms, definitions, abbreviations and symbols

3.1 Terms and definitions

The following terms and definitions apply to this document.

3.1.1

Agreement agreement

Unless otherwise stated, "agreement" means "an agreement between the manufacturer and Party A at the time of enquiry and ordering".

3.1.2

Wet weight wetweight

Includes internal fluid weight minus wet weight of buoyancy.

3.1.3

Auxiliary pipeline auxiliaryline

Auxiliary lines outside the riser main pipe (excluding throttling and kill lines).

For example. hydraulic supply lines and annulus circulation lines.

3.1.4

Ball joint baljoint

A ball and ball groove assembly having a center passage equal to or greater than the inner diameter of the riser.

Note. It can be placed in the riser string to reduce local bending stress.

3.1.5

Barrier barrier

One or more barrier units designed to avoid accidental formation fluid intrusion.

3.1.6

Barrier element barrierelement

As a single component, it is not possible in itself to avoid components that flow from one side to the other.

3.1.7

Extrusion stress bearingstress

The average normal stress acting on the interface of the abutting surface.

3.1.8

Blowout preventer blow-outpreventer; BOP

Installed at the wellhead to isolate the casing annulus pressure, or the wellbore pressure of the open hole during drilling, completion, testing, or workover.

3.1.9

BOP stack BOPstack

The well control equipment assembly includes a blowout preventer, a cross, a valve, a hydraulic connector, and a throttling line connected to the subsea wellhead.

Note. In most cases, the term sometimes includes LMRP.

3.1.10

Buoyancy block buoyancymodule

The low specific gravity material structure, usually a foamed polymer, is bundled or stuck on the outside of the riser to reduce the wet weight of the riser.

3.1.11

Calculate calculation

Study the structural safety of components/systems by methods based on analytical formulas or numerical simulations, such as finite element methods or boundary element methods.

3.1.12

Charpy test Charpytest

A test showing fracture toughness in terms of energy absorption, lateral expansion, or fracture appearance.

3.1.13

Throttle and kill line choke-and-killine

Arranged circumferentially along the periphery of the riser to circulate fluid into and out of the wellbore and control the peripheral pipe line of the well pressure.

3.1.14

Connector connector

Used to connect adjacent components of the riser system to form a joint that withstands loads and prevents leakage.

For example. thread type, including (i) an externally threaded connection (male), an internally threaded fitting (mother) and seal (S), or (i) two male and one connections

Short section and seal ring (s); flange type. including two flanges, bolts and washers/seal ring; clamp type, including hoop, clamp, bolt and seal ring (s); pin type

Connector.

3.1.15

Control module controlmodule

The system assembly of the platform to control the underwater equipment is realized by pilot or sequential hydraulic or electrohydraulic operation.

Note. It can be configured as a riser control module for the tubing hanging mode to be sent to the column work, or as a workover control module, in the oil tree mode.

Department workover assembly operations.

3.1.16

Completion riser completionriser

Temporary riser for completion operations in blowout preventers and drilling risers.

Note. Completion operations are carried out in the drilling riser. Completion risers can also be used for open water workovers.

3.1.17

Completion or workover riser completion/workoverriser

Temporary riser for completion or workover operations.

3.1.18

Component

Pressure equipment components are the basic unit of calculation and analysis.

Note. Including structural components such as pipe body, joints, stress short sections, tensioners, mounting blocks, telescopic nipples, tubing hanging directional short sections, adapters

Wait.

3.1.19

Corrosion allowance corrosionalowance

The safety margin of the wall or part design wall thickness, considering materials due to corrosion, scale, abrasion, erosion, wear and various forms

damage.

3.1.20

Crack tip opening displacement cracktipopeningdisplacement; CTOD

The severity of the crack is measured by comparison with the critical value at the start of crack propagation.

3.1.21

Design basis designbasis

The project identifies design data and functional requirements that are not specified in the industry standard for the versatility of these data.

3.1.22

Design review designcheck

The load of the component is evaluated by applicable rules.

3.1.23

Design criteria designcriteria

Each failure mode is analyzed and the quantitative analysis meets the criteria requirements.

3.1.24

Design factor designfactor

The safety factor (permissible factor) is used in the design of the working stress.

3.1.25

Design life designlife

The riser can be used for the expected life of its intended use, including storage and work cycles, including planned maintenance, but does not include significant

Repair or replace.

Note. The design life includes the well/workover riser system or part of the complete period from the start of manufacture to the end of scrap.

3.1.26

Design load designload

Load conditions for structural design.

3.1.27

Design material strength designmaterialstrength

Stress used for structural strength calculations.

3.1.28

Design pressure designpressure

The design pressure has a specific reference value during the life of the riser, which is unlikely to exceed the maximum internal and external pressure differential.

For example, if the design pressure is the maximum pressure, you need to consider the shut-in pressure of the subsea wellhead (seabed) or the upper part of the riser (the underwater valve is open), the most stratum

Large burst pressure, maximum injection pressure of the well, maximum surge pressure or maximum kill pressure.

Note. Design pressure usually refers to the maximum allowable pressure, rated working pressure or maximum allowable pressure.

3.1.29

Designer designer

The person or organization responsible for designing a completion or workover riser system that meets the requirements of this section.

3.1.30

Path gauge drift

A cylindrical shaft used to verify the diameter of the unit and assembly equipment.

3.1.31

Diameter diameter

The minimum diameter that allows the passage gauge to pass.

3.1.32

Drifting off drift-off

The arbitrarily lateral movement of the dynamic positioning vessel, which deviates from the preset wellhead position, is generally caused by loss of positioning control or propeller capability.

3.1.33

Drill pipe riser drilpiperiser

Single column of drill pipe with attached hydraulic control umbilical and annulus umbilical.

3.1.34

Drilling riser drilingriser

The floating device is used to guide the drill string and establish a drilling fluid circulation channel between the floating device and the underwater blowout preventer.

3.1.35

Drive away from drive-off

The dynamic positioning vessel is unplanned from the main thruster or the positioning thruster to deviate from the preset position.

3.1.36

Dynamic positioning dynamicpositioning

The propeller is adjusted in a computer controlled manner to maintain the position of the vessel.

3.1.37

Effective tension

The axial tension is calculated at any point along the riser, considering only the top tension, the riser and the apparent weight of the internal fluid (positive tension).

Note. Overall buckling and geometric stiffness are controlled by effective tension.

3.1.38

Emergency relief assembly emergencydisconnectpackage

The subsea equipment assembly is typically used as part of the lower workover riser assembly as a break point between the riser and the underwater equipment.

Note. This equipment is required to be used when the riser is removed from the wellhead, typically in the event of a platform drift or other emergency that causes the platform to deviate from the well.

3.1.39

Emergency relief emergencyquick-disconnect

The emergency shut-in is automatically started, and then the riser is automatically released.

3.1.40

Emergency shutdown emergencyshutdown

Controllable continuous action to ensure that the well does not accidentally release oil and gas into the environment, ie close the barrier unit.

3.1.41

Environmental load environmentalloads

The load due to the environment (waves, currents and winds).

3.1.42

Environmental seal environmentalseal

The outermost pressure seal of the connector interface.

Note. This seal isolates the pressure medium from the surrounding environment.

3.1.43

Manufacturer fabricator

The person or organization responsible for producing a completion or workover riser system that meets the requirements of this section.

3.1.44

Factory acceptance test factoryacceptancetest

The manufacturer verifies that the specific assembly meets the requirements for the booking function and operational requirements.

3.1.45

Fail-safe fail-safe

A device or system having such a device that is automatically activated to stabilize or confirm when a failure or malfunction occurs in any part of the system.

Safe operation.

3.1.46

Failure failure

Events that cause undesirable conditions, such as loss of component or system function, or functional damage resulting in safety of the device, personnel, or the environment

Seriously affected.

For example. structural...

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60089 · ISO 148 · ISO 377 · ISO 783 · ISO 1461 · ISO 2566 · ISO 3183 · ISO 4885 · ISO 6507 · ISO 6892 · ISO 9606 · ISO 9712 · ISO 10423 · ISO 10432 · ISO 10474 · ISO 10945 · ISO 11960.2004 · ISO 11961 · ISO 13533 · ISO 13535 · ISO 13628 · ISO 14693 · ISO 15156 · ISO 15579 · ISO 17025

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