02. Subsea Chokes and Flow Modules

Subsea Chokes and Flow Modules

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Reliability

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Designed for maximum flexibility and reliability,

FMC’s “F” Series Subsea Chokes and Flow Modules are

ideal for production, injection, gas lift and waterflood

applications. “Best practice” features leverage FMC’s

field proven subsea experience and technology,

including metal and elastomeric seals, mechanical

clamp technology, fluid dynamics, flow assurance and

system design.

FMC’s subsea choke family includes the Non-Retriev-

able Choke, Insert Retrievable Choke, Insert Running

Tool, Hydraulic Stepping Actuator and Electric

Actuators. Additionally, FMC has introduced

Retrievable Flow Modules, allowing modular packaging

of chokes, flow meters, pressure/temperature sensors

and erosion detectors in an easily retrievable/re-deploy-

able and/or upgradeable package.

Reliability

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Rigorous Qualification Testing•API6A/17D(ISO10423/ISO13628-4)PR2,AnnexFtested

•ExtendedFMCendurancetestedat300˚F

•IndependentCvtestedtoISA75.02

•Independenterosiontest

•IndependentAPI6AAnnexIslurrytest

•Hyperbarictestedto10,000feet(3,048m)waterdepth

•Endurancetestedat1millionpulses/steps

•Subseafield-testedundersevereoperatingconditions

Testing

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Non-Retrievable Subsea Choke Featuresamulti-holetungstencarbideplugandcagedesignwithasteelprotectivejacketaroundthecagetopreventimpactdamage.Theplugisfullyguided,pressurebalancedandrigidlyattachedtothestemtoeliminateflowinducedvibration.

Features and Benefits•Largegallerytomitigateerosionandextend chokelife

•Fullysupportedcageiscapableofreverseflow atmaximumworkingpressure

•Bodyoutletdesignedtoacceptafulltungsten carbidelinerforcompletewearprotection

Non-RetrievableSubseaChoke

Hydraulic Stepping ActuatorDesignedasa“failasis”withaClassIVROVmanualoverride,theFMCHydraulicSteppingActuatorprovidesremotepositionfeedbackviaadirectstemmountedLVDT.

Features and Benefits•Twodoubleactingspringreturnpistons

•Crossovertubingtoguaranteeoperationinall hydraulic“backpressure”conditions

•Nonetactuatorhousingvolumechangeduring the“stepping”mode

•Largetopmountedvisualindicator

•Compensationviaanencloseddiaphragm

HydraulicSteppingActuator

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InsertRetrievableSubseaChoke

Proven experienceInsert Retrievable Subsea ChokeFeaturesanFMCfieldproven“KL”twopiecehingedclampconnectorwithahorizontalClassIVROVinterface.

Features and Benefits•Funneltypeguidestructuretointerfacewith chokerunningtool

•FunnelequippedwithROVgrabbarandelectrical parkingreceptacle

•Chokebodywithtwinstabwet-matehydraulic connectors

•Hotstabtestportbetweenprimaryandsecondary bodytoinsertseals

•Multi-holetungstencarbideplugandcageinsert withsteelprotectivejackettopreventdebris impactdamage

RetrievableFlowModule

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Proven experienceSubsea Choke Running Tool TheFMCsubseachokeinsertrunningtooliswirelinedeployedwithROVassistanceforinsertretrievalanddeployment.

Features and Benefits•Threepassivepistonsprovidesoftlanding

•Latchingandunlatchingthetoolispurelya mechanicalfunction

•Toolcompletelyextendstoprotectthechokeinsert onretrievalanddeployment

•Runningtoolprovidesa45˚roughalignment captureangle

•Hydraulichotstabprovidedtoassistinchoke insertremoval SubseaChokewithInsert

Running/RetrievalTool

Retrievable Choke and Flow ModuleTheFMCRetrievableChokeModuleprovideseasyretrievalanddeploymentonadownlinewithROVassistance;norunningtoolisrequired.

Features and Benefits•Improvedreliabilityandavailabilityduetosimplified interfaces

•Smallcompactfootprintallowingstraightforwardsubsea retrievalanddeployment

•Increasedvisibilityforguidanceandconnection

•Chokeinsertandbodyarerecoveredasanassembly,ideal forhigherosionservice

•Utilizesacosteffectiveboltedbonnetdesign

•Improvedthermalperformanceduetosimplifiedinterfaces andeaseofaddinginsulationontoentirechokebodyand actuator

•Upgradeablebyaddingretrievableflowmetersandsensors

•Reconfigurationiscontainedintheflowmodule permittingstandardizationofcoretreecomponents

•Sensitivecomponentscanberetrievedanddeployedwithout performingmajorworkovers

•Allowsforeasyconversionfromproductiontreetowater injectionserviceandviceversa

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