Subsea Control Systems

Subsea Controls – Safety Functionality, Daily Operation, System Housekeeping and Production Optimization

MCS SPCU

Subsea Control SystemsReliable operation, combined with accurate control and monitoring of subsea installations, is essential to ensure the highest production availability while providing safe and environmentally friendly field operations.

FMC’s Subsea Control Systems are designed to meet the harshest subsea challenges and to provide flexibility, expandability and upgradeability throughout the life of the field.

FMC Subsea Control Systems are adaptable and configurable to operate the simplest on/off controls up to highly sophisticated controls required for operating subsea process and emerging Gas Compression Units. FMC’s control systems are modular with various configurations which have been proven indispensable to life of field upgrades that are required as field conditions change.

FMC’s focus on product standardization and extensive qualification programs ensures the highest individual components and system per-formance. This also helps optimize supply chain management and project delivery requirements.

Data monitoring and high speed communication support remote production monitoring and optimization.

Production Control System

The production control system consists of topside controls, power equipment, Subsea Control Modules (SCM) and sensors as well as subsea electrical and hydraulic distribution equipment.

The MCS and SPCU are a two of the key components that make up the topside control equipment. This equipment offers various hardware and software options to meet the customer’s immediate needs while providing for future expansion options as required.

Standardized hardware and software �Easy incorporation of control system �expandabilityModular designs �Simplified maintenance �Easy to configure �Multiple configurations �Backwards compatible �

Main features

Configurable with field proven standard �building blocksCompatible with environmental conditions from �tropic to artic locationsBackwards compatible with previous generations �Open interfaces, e. g. Ethernet, IWIS and CanBus �High speed electrical communication �up to 56.6 kbps on powerlineFiberoptic communication up to 1 Gbps �Electric and fiberoptic communication beyond �250 km without repeatersCompatible with telecom repeater systems �for even longer distancesCompatible with safety system requirements, �e. g. IEC 61508 SIL levels 1–3Configurable for HIPPS application �Qualified HP/HT capabilities �Suitable for various field layouts ranging �from single satellite wells to large multi-well developments

Topside Control System

FMC’s Topside Control Systems incorporate design innovations to adjust to the changing demands of today’s subsea environment. Topside Control System components provided by FMC include:

Master Control Station (MCS) �Subsea Power and Communication �Unit (SPCU)Hydraulic Power Unit (HPU) �Topside Termination Umbilical �Assembly (TUTA)

The Statoil Tordis Subsea Separation System

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Topside components Template solutions with alternative satelite tie-ins

Cluster and satelite solutionsUmbilical and distribution

Emergency Shutdown Signal

Hydraulic Power Unit (HPU)

Accumulator Skid

Plattform Network

Uninteruptible Power Supply (UPS)

Master Control Station (MCS)

Subsea Power and Communication Unit (SPCU)

Topside Umbilical Termination Unit (TUTA)

Electrical/Optical Junction Box

Hydraulic/Chemical Junction Box or Test Panel

Chemical Injection Unit (CIU)

Umbilical

Subsea Router Module (SRM) for long distance communication

Bouyancy

Dynamic Umbilical

Static Umbilical

J-Tube

Weak Link/Splicing Kit/Transition Joint

Subsea Distribution Unit (SDU)

Steel Flying Lead

Cobra Head

Xmas Tree

Xmas TreeSubsea Control Module (SCM)

Electrical Jumpers

Umbilical Termination Assembly (UTA)

Hydraulic/Chemical Jumper

SDU

Step-out Alternatives

Bend RestrictorUTH

Manifold

UTH

Xmas Tree

Umbilical Termination Head (UTH)

Split Box

Manifold SCM/HIPPS SCM

MUX

Subsea Control ModuleThe main component of the tree mounted control system is the Subsea Control Module (SCM). The SCM contains electronics, instrumentation, and hydraulics for safe and efficient operation of subsea tree valves, chokes, and downhole valves. Other tree mounted equipment includes various sensors, electrical and hydraulic connectors.

Over 1,000 subsea wells are controlled using FMC’s tree mounted control systems with an uptime rate of 99 – 100% for most systems. The technology today controls wells at distances up to 120 km, and in water depths of 3,000 m/10,000 ft with 15k reservoir pressure rating.

Subsea Distribution SystemFMC’s Subsea Distribution Systems consist of a group of products providing communication from subsea controls to topside. These products are developed based on field proven technology and years of experience.

A few of these products are:

Steel Flying Leads (SFL) �Cobra heads for the SFL �Multi Quick Connect Plates (MQC) �Electrical Flying Leads (EFL) �Umbilical Termination Heads (UTH) �Deployment Equipment for all the above �Hydraulic couplers �Various Subsea Sensors �

FMC has extensive experience in optimization and supply of production control umbilicals.

Hydraulic distribution Unit for 5 wells Interface to subsea X-mas tree

Subsea Control Module and Base

Subsea Control Modules

MK-|| Inboard and Outboard MQC’s

FMC’s standard SCMs are available in various sizes and functionality. The MK II is capable of controlling up to 24 valve functions, the MK III is capable of controlling up to 46 functions, and the MK IV is available for smaller applications for controlling up to 6 functions.

Mk II and Mk III SCMs are equipped with redundant hydraulic and electric supplies and electronics. All common standard industry interfaces are supported. The electronics fea-tures backwards compatibility and higher com-munication speeds over longer distances while offering full redundancy and open interface standards such as Ethernet, internet, TCP/IP, as well as fiber optic communications up to 1 Gbps.

Tordis Subsea Separation System with the protection structure removed for clarity

All Electric Control SystemAll Electric Control Systems are an attractive addition and an alternative to existing Electro Hydraulic systems. Benefits include:

Zero control fluid discharge �Reduced Umbilical costs �Deep water capability �Very long offset capability �Fast and accurate operational response �

FMC’s field proven electric subsea technology utilizes standard lowpower/ voltage umbilical and connector technology. Rechargeable subsea batteries power valve and actuator operations.

FMC’s all electric subsea electric controls reduce the cost of topside power generation and subsea umbilicals. Configurable electric hydraulic systems are available to upgrade existing hydraulic systems already in operation.

Installation of manifold actuators

Processing Control SystemFMC’s Subsea Processing Control Systems represent a set of subsea building blocks that will simplify field operations and improve and increase field production rates.

The Subsea Processing Control system is based on FMC’s standard product line, with enhanced features such as remote diagnostics and support.

RLWI System

Installation & Workover Control SystemThe Installation and Workover Control System (IWOCS) controls and monitors installation, retrieval and deployment of subsea production equipment. Riserless Light Well Intervention (RLWI) from monohull vessels and Through Tubing Rotary Drilling (TTRD) operations are also controlled by means of FMC's IWOCS systems.

Main functions and features:

Monitors and controls installation and �retrieval of tubing hangers, landing strings, subsea trees and associated sub systemsProvide facilities for down hole operations, �well testing and production testingStandardized equipment with flexibility to be �adapted to field and customer requirements Available as � direct or electro hydraulic systems

The latest generation Control System for Riserless Light Well Intervention has been developed to optimize HSE aspect and operational efficiency. The system features:

Improved working environment with �optimized HMI.Online support from shore �No hydraulic fluid release to sea �Umbilical reduced to ROV-type cable only, �improving operational efficiency, weather window and reliability Distributed controls with open standard �interfacesDepth independent response time �Qualified � for water depths down to 3000m Acoustic back up communication and �subsea UPS batteriesSafe autonomous mode in case of �communication loss

IWOCS

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Major Manufacturing Facilities

Customer Support Centers

Singapore

Jakarta

Dunfermline

Kongsberg

Nusajaya

Rio de Janeiro

Houston

Perth

Stavanger

Bergen

Luanda

AbidjanAbidjan

Macaé

San Fernando

St. John’s

Kristiansund

Port Harcourt

Malabo

Aberdeen

Data to information

Has demonstrated the following required skills for SCM Modifi cation, Maintenance and Repair Level 1:

Performance of hydraulic cleanliness in all operations.Good HSE performance related to hydraulic pressures,

high voltage, lifting and exposure to fl uids.Recording and reporting of non-conformances, recording

of traceability.Describing important SCM functions, SCM design

elements that may be replaced, ability to read SCM and SCM test stand hydraulic and electric schematics.

Performance in analysis of hydraulic fl uid cleanliness.Use of computer SCM test software, basic practical work in

SCM mechanics, hydraulics and electronics.Correct use of silicon fl uid fi lling equipment and use of

accumulator nitrogen fi lling equipment.

Kongsberg 20.04.2007

CERTIFICATIONSCM MMR Level 1

Mr. John Doe

Bjarne HystadDepartment Manager

Subsea Control System

Knut H. JoachimsenTraining Coordinator

Subsea Control System

FMC’s Global LocationsProvide advanced Control System service �and support from our main and satellite facilities around the world.

Provide certified local support bases for �Subsea controls are in Luanda, Kongsberg, Houston, Rio, Aberdeen and Singapore.

Advanced Software Solutions

Advanced software solutions in the domains of Flow Management and Condition & Performance Monitoring make use of the vase amount of information from both subsea production systems and topside systems. This ensures the production system provides optimal production, which results in increased oil recovery, maximizing return on investment.

Sophisticated algorithms and knowledge-based systems, utilizing monitoring sensors, instrumentation, chokes, valves, and other components allows for predictive equipment maintenance. This significantly reduces both maintenance costs and production system downtime.

Pressures, temperatures, flow rates etc. are used to determine settings for optimal production and to monitor the overall production parameters in real-time to avoid issues related to hydrates, erosion, water breakthrough etc.

The FMC Control System plays a pivotal role in acquiring, managing and providing the information that enables subsea production system performance to be enhanced and for operators to actively pursue IO activities.

FMC Technologies A

pril 2008 – 3D illustrations by Industriell D

okumentasjon – print by Prinfo V

anberg

www.fmctechnologies.com/subsea

FMC Technologies1777 Gears RoadHouston TX 77067USAPhone: +1 281 591 4000

FMC TechnologiesP.O.Box 1012NO-3601 KongsbergNORWAYPhone: +47 3228 6700