GB/T 21412.6-2018Petroleum and natural gas industries -- Design and operation of subsea production systems -- Part 6: Subsea production control systems (English PDF)

Foreword

GB/T 21412 "Design and Operation of Underwater Production System for Oil and Gas Industry" is divided into 15 parts.

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

--- Part 2. Unbonded flexible pipe systems for underwater and offshore applications;

--- 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. Bonding 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 the sixth part of GB/T 21412.

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

This part replaces GB/T 21412.6-2009 "Design and operation of underwater production systems for oil and gas industry - Part 6. Water

Lower Production Control System.

Compared with GB/T 21412.6-2009, the main technical changes in this section are as follows.

--- Added normative references (see Chapter 2);

--- Added terms and definitions such as "design pressure" (see Chapter 3);

--- Added abbreviations such as "AC" (see Chapter 4);

--- Removed acronyms such as "cluster-type devices" (see Chapter 4 of the.2009 edition);

--- Added "Overview" section (see 5.1);

--- Added the relevant section of "Conceptual Design" (see 5.2);

--- Added "Production System Functional Requirements" section (see 5.3);

--- Added functional description of chemical injection unit, underwater and downhole sensors and flying leads (see 5.4.1);

--- Revised a general description of the pressure level (see 5.4.2.2.1, 5.1.2.2.1 of the.2009 edition);

--- Added description of electromagnetic compatibility (see 5.4.2.5);

--- Increased design requirements for seawater entry and compensation (see 5.4.3.3);

--- Increased design requirements for system interlocks (see 5.5.5.2);

--- Increased design requirements for SCSSV protection (see 5.5.5.5);

--- Added design requirements for SCSSV hydraulic circuit flushing (see 5.5.5.6);

--- Increased requirements for control system design analysis (see 5.6.3);

--- Added a description of the MCS configuration (see 6.4.1.1);

--- Added redundancy requirements for modem units (see 6.4.3);

--- Increased the design requirements for HPU (see 6.4.5);

--- Increased the design requirements for chemical injection units (see 6.4.6);

--- Increased design requirements for hydraulic control fluids and compatibility (see 6.4.7);

--- Increased design requirements for multi-function connections (see 7.4.1.2);

--- Increased design requirements for valve actuator override (see 7.4.1.5);

--- Increased design requirements for underwater accumulators (see 7.4.1.6);

--- Increased design requirements for electromagnetic compatibility of underwater equipment (see 7.4.3.3);

--- Increased design requirements for underwater instrument connection forms (see 7.4.7);

--- Increased design requirements for isolation of subsea wellheads by ESD (see 7.4.9.1);

--- Increased design requirements for isolation of subsea wellheads by PSD (see 7.4.9.2);

--- Increased the design requirements of the HIPPS system (see 7.4.9.3);

--- Added interface description of underwater control system and other underwater equipment (see 8.3);

--- Increased intelligent well interface design requirements (see 8.5);

--- Revised the referenced welding standard (see Chapter 9, Chapter 9 of the.2009 edition);

--- Increase electrical and fiber optic equipment qualification test requirements (see 11.2.5);

--- Increase the environmental screening test requirements for electrical and fiber optic equipment (see 11.2.5);

--- Modified the control system type and selection description (see Appendix A, Appendix A of the.2009 edition);

--- Modified control fluid properties and test requirements, modified some test procedures and acceptance criteria (see Appendix E, Appendix for.2009 edition)

C);

--- Revised operational precautions regarding sea pipe pressure exposure (see Appendix E, Appendix C of the.2009 edition);

--- Increased intelligent well interface (see Appendix F);

--- Increase the definition of underwater electromagnetic environment and guidelines for testing, limit, and strength selection to make electromagnetic compatibility assumptions for underwater equipment (see attached

Record F).

This section uses the translation method equivalent to ISO 13628-6.2006 "Design and operation of the underwater production system of the oil and gas industry"

Part 6. Underwater Production Control System.

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

---GB/T 24598-2009 Aluminum and aluminum alloy fusion welding welder skill assessment (ISO 9606-2.2004, MOD)

For ease of use, the following editorial changes have been made to this section.

--- In order to facilitate the search and reading, the order of the appendix is adjusted according to the order in which the appendix appears in the text. Original ISO 13628-6

Appendix C, Appendix D, Appendix E, and Appendix F are adjusted to Appendix E, Appendix C, Appendix F, and Appendix D of GB/T 21412.6.

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 applies to the design, manufacture, testing, installation and operation of underwater production control systems, covering installation in water

Surface and underwater control system equipment, control fluids. These devices are used to control underwater oil and gas production and underwater water injection and gas injection operations.

This document also applies to the control of multi-well system equipment.

This section establishes design standards for systems, subsystems, components, and control fluids to provide safe and effective underwater production equipment.

Control function.

This section includes information on various types of underwater production control systems, as follows.

--- Informational data for the purpose of introduction and data, providing an overview of the overall structure of the control system and general functions;

--- Basic descriptive information that all control systems follow;

--- Selective data that is sensitive to the type of control system (only selected when relevant);

--- Optional data and requirements that are adopted by the user or manufacturer as deemed necessary.

In view of the variety of data types, it is recommended that users and manufacturers of control systems select the requirements for practical applications from this section.

Failure to adopt the provisions of this document may result in exceeding specifications and higher purchase costs.

Downhole intelligent drilling downhole control equipment is not covered by this section.

Rework and repair of used equipment is outside the scope of this section.

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.

ISO 3722 Hydraulic Fluid Power Fluid Sampling Container Identification and Control Cleaning Method (Hydraulicfluidpower-Fluid

samplecontainers-Qualifyingandcontrolingcleaningmethods)

ISO 4406 Hydraulic oil power liquid solid phase particle pollution level coding method (Hydraulicfluidpower-Fluids-

Methodforcodingthelevelofcontaminationbysolidparticles)

ISO 7498 (all parts) Information Processing System Open System Interconnection Basic Reference Model (Information Processing

systems-Opensystemsinterconnection-Basicreferencemodel)

ISO 9606-1 Welder Examination Fusion Welding Part 1. Steel (Approvaltestingofwelders-Fusionwelding-Part

1 Steels)

ISO 9606-2 Welder qualification test fusion welding Part 2. Aluminium and aluminium alloys (Qualificationtestofwelders-Fusion

welding-Part 2. Aluminiumandaluminiumaloys)

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

gasindustries-Drilingandproductionequipment-Welheadandchristmastreeequipment)

ISO 10945 Hydraulic Transmission - Inflatable Accumulator - Port Size (Hydraulicfluidpower-Gas-loadedaccumula-

tors-Dimensionsofgasports)

ISO /T R10949 Hydraulic Transmission Component Cleanliness Guide from Manufacturing to Installation and Control of Cleanliness (Hydraulic

fluidpower-Componentcleanliness-Guidelinesforachievingandcontrolingcleanlinessofcompo-

Nentsfrommanufacturetoinstalation)

ISO 13628-4 Design and operation of underwater production systems for oil and gas industry - Part 4. Underwater wellheads and trees

Equipment (Petroleum and naturalgasindustries-Designandoperationofsubseaproductionsystems-

Part 4. Subseawelheadandtreeequipment)

ISO 13628-5 Design and operation of underwater production systems for oil and gas industry - Part 5. s.

andnaturalgasindustries-Designandoperationofsubseaproductionsystems-Part 5.Subseaum-

Bilicals)

ISO 15607 Metallic Materials Welding Procedures and Assessment General Principles (Specification and qualificationofwelding

Proceduresformetalicmaterials-Generalrules)

Specification for welding and welding procedures - Part 2. Gas welding (Specification

qualificationofweldingproceduresformetalicmaterials-Weldingprocedurespecification-Part 2.

Gaswelding)

ISO 15610 metal material welding process specification and assessment based on test welding consumables (Specificationandqualificationof

Weldingproceduresformetalicmaterials-Qualificationbasedontestedweldingconsumables)

ISO 15611 metal material welding process specification and assessment based on existing welding (Specificationand

Qualificationofweldingproceduresformetalicmaterials-Qualificationbasedonpreviousweldingex-

Perience)

ISO 15612 Metallic material welding procedure specification and assessment by conformity assessment using standard welding procedures

Andqualificationofweldingproceduresformetalicmaterials-Qualificationbyadoptionofastandard

Weldingprocedure)

ISO 15613 welding procedure specification and assessment for metallic materials based on the qualification of pre-production welding tests (Specificationandquali-

ficationofweldingproceduresformetalicmaterials-Qualificationbasedonpre-productionwelding

Test)

Welding process specification and evaluation of welding procedures - Part 1 . Arc welding and gas welding of steel,

Arc and nickel alloy arc welding (Specification and qualification of welding procedures for metalicmaterials-Weld-

ingproceduretest-Part 1.Arcandgasweldingofsteelsandarcweldingofnickelandnickelaloys)

ISO /T S16431 Hydraulic System Assembly Cleanliness Test (Hydraulicfluidpower-Assembledsystems-

Verificationofcleanliness)

ANSI/ASMEB31.3 Process Pipeline (Processpiping)

ASMEVIII Boiler and Pressure Vessel Code, Volume VIII 1 Pressure Vessel Construction Rules (ASMEBoilerandPressure)

VesselCode, SectionVIII, Division1, RulesfortheConstructionofPressureVessels)

ASMEIX Boiler and Pressure Vessel Code, Volume IX, Welding and Brazing Evaluation Criteria (ASMEBoilerandPressure)

VesselCode, SectionIX, WeldingandBrazingQualifications)

ASTMD97 Standard Test Method for Pour Point of Petroleum Products (StandardMethodforPourPointofPetroleumProd-

Ucts)

ASTMD445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (Dynamic Viscosity Calculation) [StandardTestMethod

forKinematicViscosityofTransparentandOpaqueLiquids(andtheCalculationofDynamicViscosi-

Ty)]

ASTMD471 Rubber Property Test Method Liquid Effect (StandardTestMethodforRubberProperty-

EffectofLiquids)

ASTMD665.2003 Test method for rust resistance of mineral oil inhibitors in water (StandardTestMethodforRustPre-

ventingCharacteristicsofInhibitedMineralOilinthePresenceofWater)

ASTMD892 Test Method for Lubricating Properties of Lubricating Oils (StandardTestMethodforFoamingCharacteristicsof

LubricatingOils)

ASTMD1141 Test Method for Lubricating Properties of Lubricating Oil (StandardPracticeforthePreparationofSubstitute

OceanWater)

ASTMD1298 Test method for density, relative density (specific gravity) or API gravity of crude oil and liquid petroleum products by hydrometer method

[StandardTestMethodforDensity,RelativeDensity(SpecificGravity),orAPIGravityofCrudePe-

troleumandLiquidPetroleumProductsbyHydrometerMethod]

ASTMD2625 Solid Film Lubricant Test for Lifetime Durability and Load Capacity [StandardTestMethodforEndur-

Ance(Wear)LifeandLoad-CarryingCapacityofSolidFilmLubricants(FalexPinandVeeMethod)]

ASTMD2670 Method for measuring the abrasion resistance of liquid lubricants (Farex shafts and V-blocks) [StandardTest

MethodforMeasuringWearPropertiesofFluidLubricants(FalexPinandVeeBlockMethod)]

ASTMD3233 Test Method for Extreme Pressure Performance of Liquid Lubricants (Farex stylus and V-shaped device method) [StandardTest

MethodsforMeasurementofExtremePressurePropertiesofFluidLubricants(FalexPinandVee

BlockMethods)]

ASTMG1.2003 Procedure for Preparation, Cleaning and Evaluation of Corrosion Specimens (Standard Practice for Preparing, Cleaning,

andEvaluatingCorrosionTestSpecimens)

BS7201-1 Hydraulic fluid-filled accumulators - Part 1. Specification for seamless steel accumulators with a water storage capacity of 0.5 or more

(Hydraulicfluidpower-Gasloadedaccumulators-Specificationforseamlesssteelaccumulator

Bodybove0.5Lwatercapacity)

DIN41612-2 Multi-pole plug connector special contact; common contact (type C) [Specialcontactsformultitwo-part

Connectors;concentriccontacts(typeC)]

IEC 61892 (all parts) Mobile and stationary offshore installations (Electricalinstalationsofshipsandof

Mobileandfixedoffshoreunits)

ControlProtocol(TCP)]

PPPInternetProtocolControlProtocol(IPCP)]

Protocol(PPP)]

IP34 flash point determination Pensky-Martin closed cup method (DeterminationofflashpointPensky-Martensclosed

Cupmethod)

IP135.2005 Determination of rust resistance characteristics of turbine oil in the presence of water (Determinationofrust-preventing characteristics

Ofsteam-turbineoilinthepresenceofwater)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1

Boost boost

To improve the closing response time, the pressure on the spring return side of the underwater actuator is maintained.

3.2

Command to close commandedclosure

Shutdown of underwater safety valves and other valves designed according to the control system.

Note. These instructions can come from manual, automatic or emergency shutdown systems (ESD).

3.3

Control path (length) controlpath

The total distance that control signals (such as electricity, light, hydraulics) are transmitted from the upper control system to the subsea control module or valve actuator.

3.4

Design pressure designpressure

The maximum pressure at which the system or component can be used continuously.

3.5

Design life designlife

The operating time specified after the system is delivered for acceptance.

3.6

Diagnostic data diagnostic data

Data provided to monitor the condition of the bottom hole equipment.

Note. May include the ability to adjust (engineering) parameters.

3.7

Direct hydraulic control directhydrauliccontrol

The hydraulic pressure acts directly on the control of the underwater valve actuator through the line in the umbilical.

Note. When the upper pressure is vented, the control fluid is returned to the surface installation through the umbilical cable under the action of the valve actuator spring restoring force. Underwater functions can be combined

Together to reduce the number of lines in the umbilical.

3.8

Downstream downstream

Keep away from the components in the direction of flow.

3.9

Electrohydraulic control

The electrical signal is transmitted to the underwater system to control the opening or closing of the electronically controlled hydraulic valve.

Note. Hydraulic oil is supplied locally and acts on the corresponding underwater valve actuator. "Providing hydraulic oil on site" can be locally stored pressurized fluid or hydraulic

Cable supply. High-speed data automatic measurement recording is possible using the electro-hydraulic control system. Multi-channel technology for electrical signals reduces power in the umbilical

The number of wires.

3.10

Expert operation expert operation

IWCS is operated using other control commands and methods without routine operation.

Note. It is often used by IWCS vendors or other experienced personnel to read IWCS diagnostic data and adjust IWCS engineering parameters.

3.11

Hydrostatic test pressure hydrostatictestpressure

Maximum test pressure greater than the design pressure (rated working pressure).

3.12

Intelligent well inteligentwel

The well of the downhole sensor/control device controlled by the upper facility is permanently installed.

3.13

Intelligent well control system inteligentwelcontrolsystem

A control system for operating smart wells.

3.14

Normal operation normaloperation

The operating system performs predetermined basic functions.

3.15

Branch offset

Controls the horizontal portion of the path length.

3.16

Pressure proof proof pressure

Maximum test pressure greater than the design pressure.

3.17

Response time responsetime

The sum of signal transmission time and working time.

3.18

Work tool runningtool

A remotely operated tool for the operation, recycling, positioning and connection of underwater equipment from the water.

Note. Such as underwater control module work tools.

3.19

Working time shifttime

The time it takes for the control signal to reach the underwater position (end of signal transmission time) and complete the control function.

Note. For subsea trees, the main concern is the full travel time of the main or wing valve designed to operate as an underwater safety valve.

3.20

Signal transmission time signaltime

The time taken by the remote control command to the start of the underwater control function (start of working time).

3.21

Underwater production control system subseaproductioncontrolsystem

A control system for the operation of underwater production systems during production operations.

3.22

Surface safety valve surfacesafetyvalve

The surface safety valve is located in the production tubing of the dry wellhead or at the landing point of the underwater production well to the platform, and is automatically closed for pressure relief.

3.23

Umbilical cord umbilical

A combination of cable, hose or steel tube (or fiber optic) that increases flexibility by twisting a composite cable, using an outer jacket and/or armoring machine

Mechanical strength, usually providing electro-hydraulic, communication, and chemical agents for underwater systems.

3.24

Underwater safety valve underwatersafetyvalve

The USV is defined as a safety valve assembly that automatically closes when the actuator loses pressure.

3.25

Upstream upstream

Towards the direction of the pressure source or source of hydraulic fluid.

3.26

Oil well data weldata

Data for reservoir description, flow calculations, and routine production monitoring is provided by downhole equipment.

Note. Usually includes sensor readings and valve position.

3.27

Filter ratio.

4 Abbreviations

The following abbreviations apply to this document.

ANSI American National Standards Institute (American National Standards Institute Institute)

AC alternating current (alternatingcurrent)

API American Petroleum Institute (American Petroleum Institute)

AS Aerospace Standard (AerospaceStandard)

ASME American Society of Mechanical Engineers (American Society of Mechanical Engineers)

ASTM American Society for Materials and Experiments (AmericanSocietyforTestingandMaterials)

AWS American Welding Association (AmericanWeldingSociety)

BER bit error rate

Capex investment (capitalexpenditure)

CB buoyancy center (centreofbuoyancy)

CISPR International Radio Interface Special Committee [Comité InternationalSpécialdesPerturationsRadio-

Electrique(InternationalSpecialCommitteeonRadio-Interference)]

CIU chemical injection un...