2. Subsea Controls – Safety Functionality, Daily Operation,
System Housekeeping and Production Optimization
MCS SPCU
Subsea Control Systems
Reliable 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
expandability
Modular designs
Simplified maintenance
Easy to configure
Multiple configurations
Backwards compatible
Main features
Configurable with field proven standard
building blocks
Compatible with environmental conditions from
tropic to artic locations
Backwards compatible with previous generations
Open interfaces, e. g. Ethernet, IWIS and CanBus
High speed electrical communication
up to 56.6 kbps on powerline
Fiberoptic communication up to 1 Gbps
Electric and fiberoptic communication beyond
250 km without repeaters
Compatible with telecom repeater systems
for even longer distances
Compatible with safety system requirements,
e. g. IEC 61508 SIL levels 1–3
Configurable 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)
3. The Statoil Tordis Subsea Separation System
www.fmctechnologies.com/subsea
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 Tree
Subsea 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
4. Subsea Control Module
The 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 System
FMC’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.
5. Tordis Subsea Separation System with the protection
structure removed for clarity
All Electric Control System
All 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 System
FMC’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 System
The 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 systems
Provide facilities for down hole operations,
well testing and production testing
Standardized 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
interfaces
Depth independent response time
Qualified for water depths down to 3000m
Acoustic back up communication and
subsea UPS batteries
Safe autonomous mode in case of
communication loss
IWOCS
www.fmctechnologies.com/subsea
6. 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
Modification, 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 fluids.
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 fluid cleanliness.
Use of computer SCM test software, basic practical work in
SCM mechanics, hydraulics and electronics.
Correct use of silicon fluid filling equipment and use of
accumulator nitrogen filling equipment.
Kongsberg 20.04.2007
CERTIFICATION
SCM MMR Level 1
Mr. John Doe
Bjarne Hystad
Department Manager
Subsea Control System
Knut H. Joachimsen
Training Coordinator
Subsea Control System
FMC’s Global Locations
Provide 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.
