subsea in 60 minutes 7-15-02
TRANSCRIPT
Subsea Presentation 6/26/01
1
Subsea in Sixty Minutes!
Subsea in Sixty Minutes!
Subsea Presentation 6/26/01
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SUBSEA SYSTEM COMPONENTSSUBSEA SYSTEM COMPONENTS
Manifold
Jumper
PLEMTree
Umbilical
UTA
Flying LeadsJumper Control Pod
Subsea Presentation 6/26/01
3Why Subsea?Drivers for Using Subsea Systems
Why Subsea?Drivers for Using Subsea Systems
l Economics: production may not justify the CAPEX for a platform.
l Field reservoir areas may not be reached by delineated drilling from surface wells.
l The water depth may be too great to use a surface well platform.
l Early Production: fast-track development is required.
l Economics: production may not justify the CAPEX for a platform.
l Field reservoir areas may not be reached by delineated drilling from surface wells.
l The water depth may be too great to use a surface well platform.
l Early Production: fast-track development is required.
Subsea Presentation 6/26/01
4SUBSEA SYSTEMSAdvantages/ Disadvantages
SUBSEA SYSTEMSAdvantages/ Disadvantages
l Advantages
- Eliminate or reduce CAPEX of platform
- Cost burden transferred from CAPEX to OPEX
- Construction cycle is conducive to fast-track projects
- Suitable to phased projects
l Advantages
- Eliminate or reduce CAPEX of platform
- Cost burden transferred from CAPEX to OPEX
- Construction cycle is conducive to fast-track projects
- Suitable to phased projects
l Disadvantages
- Complex hardware
- Inaccessible for maintenance and repair.
- Intervention is expensive and complex
l Disadvantages
- Complex hardware
- Inaccessible for maintenance and repair.
- Intervention is expensive and complex
Subsea Presentation 6/26/01
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Field Configurations
Field Configurations
Subsea Presentation 6/26/01
6SUBSEA EQUIPMENT CONFIGURATIONSSatellite Well Systems
SUBSEA EQUIPMENT CONFIGURATIONSSatellite Well Systems
l Individual wells are tied directly to a host facility.
l Tiebacks can be single or multiple wells.
l Hosts can be SWP, TLP, SPAR, FPS, FPSO, etc.
l Individual wells are tied directly to a host facility.
l Tiebacks can be single or multiple wells.
l Hosts can be SWP, TLP, SPAR, FPS, FPSO, etc.
Subsea Presentation 6/26/01
7SUBSEA EQUIPMENT CONFIGURATIONSTemplate Manifold Systems
SUBSEA EQUIPMENT CONFIGURATIONSTemplate Manifold Systems
l Wells are drilled and
completed through
template manifold.
l Central drilling center.
l Well targets reached via
directional drilling.
l May have satellite wells
tied back to manifold.
l Wells are drilled and
completed through
template manifold.
l Central drilling center.
l Well targets reached via
directional drilling.
l May have satellite wells
tied back to manifold.
Subsea Presentation 6/26/01
8FIELD CONFIGURATIONSWell Cluster Systems
FIELD CONFIGURATIONSWell Cluster Systems
l Wells are drilled in
close proximity and
produce through a
common manifold.
l Batch drilling and
completion are
common.
l Components are
small easily
deployed modular
units.
l Wells are drilled in
close proximity and
produce through a
common manifold.
l Batch drilling and
completion are
common.
l Components are
small easily
deployed modular
units.
Subsea Presentation 6/26/01
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Subsea Wellheads
Subsea Wellheads
Subsea Presentation 6/26/01
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What is a Subsea Wellhead?What is a Subsea Wellhead?
The subsea wellhead is the
interface between
subsurface equipment
(downhole) and the surface
equipment (tree, BOP,
flowlines, host, etc.)
The subsea wellhead is the
interface between
subsurface equipment
(downhole) and the surface
equipment (tree, BOP,
flowlines, host, etc.)
Subsea Presentation 6/26/01
11What is the purpose of a Subsea Wellhead?
What is the purpose of a Subsea Wellhead?
l Support the BOP (Blowout
Preventer) and seal the well
during drilling
l Support and seal the subsea
tree during production.
l Support the tubing hanger in a
conventional subsea tree.
l Act as a hanger for the casing
strings in the well annulus.
l Support the BOP (Blowout
Preventer) and seal the well
during drilling
l Support and seal the subsea
tree during production.
l Support the tubing hanger in a
conventional subsea tree.
l Act as a hanger for the casing
strings in the well annulus.
Subsea Presentation 6/26/01
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Subsea Wellhead ClassificationSubsea Wellhead Classification
l Typical Sizes: 13 5/8 in, 16 ¾ in, 18 ¾ in, 21 ¼ in
l Most Common: 18 ¾ inch
l Pressure Ratings: 10,000 psi or 15,000 psi
l Common Standard: 18 ¾ in x 10,000 psi
l 18 ¾ in x 15,000 psi is quickly becoming the new standard
l Typical Sizes: 13 5/8 in, 16 ¾ in, 18 ¾ in, 21 ¼ in
l Most Common: 18 ¾ inch
l Pressure Ratings: 10,000 psi or 15,000 psi
l Common Standard: 18 ¾ in x 10,000 psi
l 18 ¾ in x 15,000 psi is quickly becoming the new standard
Subsea Presentation 6/26/01
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Wellhead ProfilesWellhead Profiles
l All wellheads have an external profile
for BOP or tree connectors
l Cameron “hub” or Vetco “mandrel”
profiles are the most common.
l Cooperative license agreements
allow competitors to provide profile
selections.
l The wellhead profile must match the
BOP or tree connector.
l BOP connectors can be changed out
but subsea trees require a
conversion spool called a tubing
spool.
l All wellheads have an external profile
for BOP or tree connectors
l Cameron “hub” or Vetco “mandrel”
profiles are the most common.
l Cooperative license agreements
allow competitors to provide profile
selections.
l The wellhead profile must match the
BOP or tree connector.
l BOP connectors can be changed out
but subsea trees require a
conversion spool called a tubing
spool.
Subsea Presentation 6/26/01
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Major Subsea Wellhead SuppliersMajor Subsea Wellhead Suppliers
l ABB Vetco
l Cooper Cameron
l Dril-Quip
l FMC
l Kvaerner National
l ABB Vetco
l Cooper Cameron
l Dril-Quip
l FMC
l Kvaerner National
Subsea Presentation 6/26/01
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Subsea TreesSubsea Trees
Subsea Presentation 6/26/01
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What is a Subsea Tree?What is a Subsea Tree?
A set of valves and piping to allow the control of a well during production at the mudline and remote to the host facility.
A set of valves and piping to allow the control of a well during production at the mudline and remote to the host facility.
Subsea Presentation 6/26/01
17What Makes Subsea Trees Different from Surface Trees?
What Makes Subsea Trees Different from Surface Trees?
Subsea Trees are:l More complex
l Larger
l More robust
l More expensive
l Inaccessible
Subsea Trees are:l More complex
l Larger
l More robust
l More expensive
l Inaccessible
Subsea Presentation 6/26/01
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Types of Subsea TreesTypes of Subsea Trees
MudlineTree
MudlineTree
ConventionalTree
ConventionalTree
HorizontalTree
HorizontalTree
Subsea Presentation 6/26/01
19Subsea TreeMajor Components
Subsea TreeMajor Components
PGBPGB
WellheadWellhead
Valve BlockValve Block
Subsea ChokeSubsea Choke
Tree CapTree Cap
Tree ConnectorTree Connector
Tubing HangerTubing Hanger
Subsea Presentation 6/26/01
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Conventional Vs Horizontal FeaturesConventional Vs Horizontal Features
Dual Bore TreeDual Bore Tree Horizontal TreeHorizontal Tree
l Master & swab valves in vertical bore
l Tree run after tubing
l Tubing Hanger orients from wellhead
l External tree cap
l Master & swab valves in vertical bore
l Tree run after tubing
l Tubing Hanger orients from wellhead
l External tree cap
l No valves in the vertical bore
l Tree run before the tubing
l Tubing hanger orients in tree
l Internal tree cap
l No valves in the vertical bore
l Tree run before the tubing
l Tubing hanger orients in tree
l Internal tree cap
Subsea Presentation 6/26/01
21Horizontal Vs Conventional Trees Configuration
Horizontal Vs Conventional Trees Configuration
Subsea Presentation 6/26/01
22Advantages/Disadvantages Conventional Tree
Advantages/Disadvantages Conventional Tree
Advantagesl Vertical access to annulus
l Tubing is undisturbed if tree is pulled
l Dual completion designs are available
l Tubing hanger seals are not exposed to well fluids
Disadvantagesl The tree must be pulled if tubing must be pulled
l Dual bore Installation/Workover riser required
l More valves required per tree
l More running tools required
Advantagesl Vertical access to annulus
l Tubing is undisturbed if tree is pulled
l Dual completion designs are available
l Tubing hanger seals are not exposed to well fluids
Disadvantagesl The tree must be pulled if tubing must be pulled
l Dual bore Installation/Workover riser required
l More valves required per tree
l More running tools required
Subsea Presentation 6/26/01
23Advantages/Disadvantages Horizontal Tree
Advantages/Disadvantages Horizontal Tree
Advantagesl Installation/Workover riser not required
l Fewer valves per tree required
l Tree is undisturbed if the tubing is pulled
l A larger vertical bore is available
l Fewer running tools required
Disadvantagesl The tubing is pulled if the tree fails
l No vertical access
l Tubing hanger seals are exposed to well fluid
Advantagesl Installation/Workover riser not required
l Fewer valves per tree required
l Tree is undisturbed if the tubing is pulled
l A larger vertical bore is available
l Fewer running tools required
Disadvantagesl The tubing is pulled if the tree fails
l No vertical access
l Tubing hanger seals are exposed to well fluid
Subsea Presentation 6/26/01
24Misc. Tree Hardware“Jewelry”
Misc. Tree Hardware“Jewelry”
l Retrievable subsea chokes
l Tree mounted pressure and temperature transducers
l Downhole pressure and temperature transducers
l Downhole flowmeters
l Tree mounted flowmeters
l ROV overrides on tree valves
l Seal test ports
l Trawlboard and dropped object protection
l Retrievable subsea chokes
l Tree mounted pressure and temperature transducers
l Downhole pressure and temperature transducers
l Downhole flowmeters
l Tree mounted flowmeters
l ROV overrides on tree valves
l Seal test ports
l Trawlboard and dropped object protection
Subsea Presentation 6/26/01
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How Are Subsea Trees Identified?How Are Subsea Trees Identified?
l Type: Conventional or Horizontal
l Working Pressure Rating : 5,000 , 10,000 , or 15,000 psig
l Tubing Size: production tubing and annulus tubing ( 4-in x 2 in)
l Any Special Features: integral block, clad, guideline/ guidelineless, split, TFL, etc.
Example: Horizontal 4 X 2- 10,000 psi, Inconel clad, guidelineless subsea tree
l Type: Conventional or Horizontal
l Working Pressure Rating : 5,000 , 10,000 , or 15,000 psig
l Tubing Size: production tubing and annulus tubing ( 4-in x 2 in)
l Any Special Features: integral block, clad, guideline/ guidelineless, split, TFL, etc.
Example: Horizontal 4 X 2- 10,000 psi, Inconel clad, guidelineless subsea tree
Subsea Presentation 6/26/01
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Major Subsea Tree SuppliersMajor Subsea Tree Suppliers
FMC
Cooper Cameron
ABB Vetco
Kvaever National
FMC
Cooper Cameron
ABB Vetco
Kvaever National
Subsea Presentation 6/26/01
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Subsea Manifold Systems
Subsea Manifold Systems
Subsea Presentation 6/26/01
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
l A collection of valves, pipework and connection devices located on the seabed
l A subsea manifold collects flow from multiple wells before transporting the fluid to the host facility
l A collection of valves, pipework and connection devices located on the seabed
l A subsea manifold collects flow from multiple wells before transporting the fluid to the host facility
What is a Subsea Manifold?What is a Subsea Manifold?
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
Why are subsea manifolds necessary?l Collect flow from a number of subsea
wells into a single transportation system
l Provide an economical alternative to individual flowlines
l Commingle production from individual wells
l Provide a mechanism for well testing
l Allows first oil to be produced in a phased well development program
Why are subsea manifolds necessary?l Collect flow from a number of subsea
wells into a single transportation system
l Provide an economical alternative to individual flowlines
l Commingle production from individual wells
l Provide a mechanism for well testing
l Allows first oil to be produced in a phased well development program
Subsea Presentation 6/26/01
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SUBSEA MANIFOLD TYPESSUBSEA MANIFOLD TYPES
l Template Manifolds
l Cluster Manifolds
l Large Gathering Manifolds
l Hybrid Manifolds
l Template Manifolds
l Cluster Manifolds
l Large Gathering Manifolds
l Hybrid Manifolds
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
Template Manifoldsl Provides drilling base and
manifold in one structurel Provides a multi-well drilling
templatel May be small (i.e. 3-slot) or
large (i.e. 24-slot)l Multi-well subsea tieback to a
host facility
Template Manifoldsl Provides drilling base and
manifold in one structurel Provides a multi-well drilling
templatel May be small (i.e. 3-slot) or
large (i.e. 24-slot)l Multi-well subsea tieback to a
host facility
Subsea Presentation 6/26/01
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
Cluster Manifolds
l Trees are located within 15 to 50
meters
l Generally small (4 or 6-slots)
l Commingles production or
distributes injection
l Retrievable module design
Cluster Manifolds
l Trees are located within 15 to 50
meters
l Generally small (4 or 6-slots)
l Commingles production or
distributes injection
l Retrievable module design
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
Modular Manifolds
l Modular ‘Building block’ arrangement
l Size may be increases after
installation
l Some designs fold up for smaller
installation package
l Standard design
Modular Manifolds
l Modular ‘Building block’ arrangement
l Size may be increases after
installation
l Some designs fold up for smaller
installation package
l Standard design
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SUBSEA MANIFOLDSSUBSEA MANIFOLDS
Hybrid Manifolds
l Template Manifolds that allow satellite well tie-ins
l Generally large structure for high well count
l Associated production riser system
l Generally located near the platform facility
Hybrid Manifolds
l Template Manifolds that allow satellite well tie-ins
l Generally large structure for high well count
l Associated production riser system
l Generally located near the platform facility
Subsea Presentation 6/26/01
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BASIC MANIFOLD DESIGNSBASIC MANIFOLD DESIGNS
l Single Header Manifolds
- Water injection
- Gas injection
l Dual or Multiple Header Manifolds
- Oil and gas production systems
- Dual flowlines
- Well test and gas lift capabilities
l Single Header Manifolds
- Water injection
- Gas injection
l Dual or Multiple Header Manifolds
- Oil and gas production systems
- Dual flowlines
- Well test and gas lift capabilities
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BASIC MANIFOLD DESIGNSBASIC MANIFOLD DESIGNS
l Typical of gas or water
injection manifolds
l All wells connected to
the main header
l Non-piggable
l Typical of gas or water
injection manifolds
l All wells connected to
the main header
l Non-piggable
Single Header ManifoldsSingle Header Manifolds
Manifold
Flowlines
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BASIC MANIFOLD DESIGNSBASIC MANIFOLD DESIGNS
l Selective routing of wells to headers
l Allows round trip pigging
l Accommodates well test via isolation
l Allows dual pressure regime production
l Selective routing of wells to headers
l Allows round trip pigging
l Accommodates well test via isolation
l Allows dual pressure regime production
Dual Header With Selective Branch ValvesDual Header With Selective Branch Valves
Manifold
Flowlines
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BASIC MANIFOLD DESIGNSBASIC MANIFOLD DESIGNS
l Selective routing of
wells to production
header or test line
l Allows round trip
pigging
l Allows dual pressure
regime production
l Selective routing of
wells to production
header or test line
l Allows round trip
pigging
l Allows dual pressure
regime production
Multi-Header With Selective Branch ValvesMulti-Header With Selective Branch Valves
Manifold
Flowline
Flowline
Test Line
Subsea Presentation 6/26/01
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MANIFOLD ASSEMBLY EXAMPLESMANIFOLD ASSEMBLY EXAMPLES
Template ManifoldTexaco Captain Field
North Sea
Template ManifoldTexaco Captain Field
North Sea
Cluster ManifoldBP Foinhaven FieldWest of Shetlands
Cluster ManifoldBP Foinhaven FieldWest of Shetlands
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MANIFOLD ASSEMBLY EXAMPLESMANIFOLD ASSEMBLY EXAMPLES
Cluster ManifoldTexaco Gemini Field
Gulf of Mexico
Cluster ManifoldTexaco Gemini Field
Gulf of Mexico
Cluster ManifoldShell Popeye Field
Gulf of Mexico
Cluster ManifoldShell Popeye Field
Gulf of Mexico
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Subsea Jumper Systems
Subsea Jumper Systems
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SUBSEA JUMPER SYSTEMSSUBSEA JUMPER SYSTEMS
What is a Subsea Jumper?
l A means of connecting
subsea equipment together
l Consists of connection
devices either end of a
jumper spool piece (pipe)
What is a Subsea Jumper?
l A means of connecting
subsea equipment together
l Consists of connection
devices either end of a
jumper spool piece (pipe)
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SUBSEA JUMPER SYSTEMSSUBSEA JUMPER SYSTEMS
Rigid Pipe Spooll Equipment is connected
using a jumper fabricated from rigid pipe
l Can be fabricated on site or onshore
Rigid Pipe Spooll Equipment is connected
using a jumper fabricated from rigid pipe
l Can be fabricated on site or onshore
Flexible Pipe Spooll Flexible pipe spool (e.g.
Coflexip)
l Equipment is connected using flexible pipe
l Manufactured on shore and shipped complete
Flexible Pipe Spooll Flexible pipe spool (e.g.
Coflexip)
l Equipment is connected using flexible pipe
l Manufactured on shore and shipped complete
Subsea Jumper Basic TypesSubsea Jumper Basic Types
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SUBSEA JUMPER SYSTEMSSUBSEA JUMPER SYSTEMS
Rigid JumpersRigid Jumpers
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SUBSEA JUMPER SYSTEMSSUBSEA JUMPER SYSTEMS
Flexible JumpersFlexible Jumpers
HORIZONTAL CONNECTION SYSTEM
HORIZONTAL CONNECTION SYSTEM
Horizontal Arrangement
l Stab and Hinge-Over Design (SHO)
l Mating hubs are positioned together horizontally
l Connection made by running tool or integrated hydraulics
l Hubs are pulled (Running tool) or stoked (integrated hydraulics) together before connection is made
Horizontal Arrangement
l Stab and Hinge-Over Design (SHO)
l Mating hubs are positioned together horizontally
l Connection made by running tool or integrated hydraulics
l Hubs are pulled (Running tool) or stoked (integrated hydraulics) together before connection is made
Collet Connector
Receiver Structure
Vertical Connection System
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Subsea
Production Control Systems
Subsea
Production Control Systems
Subsea Presentation 6/26/01
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Subsea Control SystemsSubsea Control Systems
Why do we need them?l To enable remote control of subsea production wells by:
- Operation of subsea valves
- Adjusting subsea chokes
l To enable the safe operation of subsea wells by:- Closing valves on command
- Performing shutdown operations
- Enabling interlock functions
l To monitor conditions during production by:- Readback of produced fluid conditions
- Warning of unstable/ undesirable conditions
- Continually updating all system information
Why do we need them?l To enable remote control of subsea production wells by:
- Operation of subsea valves
- Adjusting subsea chokes
l To enable the safe operation of subsea wells by:- Closing valves on command
- Performing shutdown operations
- Enabling interlock functions
l To monitor conditions during production by:- Readback of produced fluid conditions
- Warning of unstable/ undesirable conditions
- Continually updating all system information
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Subsea Control System TypesSubsea Control System Types
l 1. Direct Hydraulic
- Up to 3 miles
- Single wells
l 2. Piloted Hydraulic
- Up to 7 miles
- Low well count
l 3. Electro Hydraulic
- 65 miles + to date
- Multiple wells
l 1. Direct Hydraulic
- Up to 3 miles
- Single wells
l 2. Piloted Hydraulic
- Up to 7 miles
- Low well count
l 3. Electro Hydraulic
- 65 miles + to date
- Multiple wells
$$
$$$$
$$$$$$$$$$$$
Subsea Presentation 6/26/01
51What Can Subsea Control Systems Do?
What Can Subsea Control Systems Do?
FUNCTION
Tree Valves
SCSSV’S
Chokes
Manifold Valves
Pipeline Valves
Throttle Valves
PREVENT
Operator Error
Overpressure
Incorrect Valve Operation
FUNCTION
Tree Valves
SCSSV’S
Chokes
Manifold Valves
Pipeline Valves
Throttle Valves
PREVENT
Operator Error
Overpressure
Incorrect Valve Operation
MONITOR
Pressure
Temperature
Flow Rate
Choke Position
Valve Position
Erosion Rates
Corrosion Rates
RESPOND
Automatic Well Shut in
Automatic Choke Control
Automatic System Shut in
MONITOR
Pressure
Temperature
Flow Rate
Choke Position
Valve Position
Erosion Rates
Corrosion Rates
RESPOND
Automatic Well Shut in
Automatic Choke Control
Automatic System Shut in
Subsea Presentation 6/26/01
52Electro/Hydraulic Control System Major Components
Electro/Hydraulic Control System Major Components
• Hydraulic Power Unit (HPU)
• Master Control Station (MCS)
• Electrical Power Unit (EPU)
• Uninterruptible Power Supply (UPS)
• Topside Umbilical Termination Assembly (TUTA)
• Subsea Umbilical
• Umbilical Termination Unit (UTA)
• Subsea Distribution Unit (SDU)
• Flying Leads
• Subsea Control Module (SCM or Pod)
• Hydraulic Power Unit (HPU)
• Master Control Station (MCS)
• Electrical Power Unit (EPU)
• Uninterruptible Power Supply (UPS)
• Topside Umbilical Termination Assembly (TUTA)
• Subsea Umbilical
• Umbilical Termination Unit (UTA)
• Subsea Distribution Unit (SDU)
• Flying Leads
• Subsea Control Module (SCM or Pod)
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Hydraulic Power Unit (HPU)Hydraulic Power Unit (HPU)
l Provides system hydraulic
pressure
l Stores control fluid energy
l Supplies clean hydraulic fluid
l Regulates supply pressure
l Sends status information to the
MCS
l Allows remote or local control
l Provides system hydraulic
pressure
l Stores control fluid energy
l Supplies clean hydraulic fluid
l Regulates supply pressure
l Sends status information to the
MCS
l Allows remote or local control
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Master Control Station (MCS)Master Control Station (MCS)
l Operator Control Station
l Supplies and monitors subsea power
l Sends and receives signals via the SCM
l Allows operator intervention
l Provides interface with platform control system
l Operator Control Station
l Supplies and monitors subsea power
l Sends and receives signals via the SCM
l Allows operator intervention
l Provides interface with platform control system
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Subsea Control PodSubsea Control Pod
l Subsea control center
l Executes commands from the surface
l Features
- Must be fully retrievable
- Receives and sends signals to MCS
- Tracks internal status and transmits to the MCS
- Functions subsea valves
- Monitors subsea sensors
- Re-configuration from topside
l May operate 18 – 24 hydraulic functions
l May monitor 8 – 10 remote sensor inputs
l Subsea control center
l Executes commands from the surface
l Features
- Must be fully retrievable
- Receives and sends signals to MCS
- Tracks internal status and transmits to the MCS
- Functions subsea valves
- Monitors subsea sensors
- Re-configuration from topside
l May operate 18 – 24 hydraulic functions
l May monitor 8 – 10 remote sensor inputs
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Subsea UmbilicalsSubsea Umbilicals
l Provides link between surface (operator) and subsea
equipment
l Supplies hydraulic fluid to operate subsea valves and chokes
l Supplies electrical power to operate subsea electronics
l Transmits electronic signals to execute operational commands subsea
l Returns electronic data to the surface from subsea instrumentation
l Provides link between surface (operator) and subsea
equipment
l Supplies hydraulic fluid to operate subsea valves and chokes
l Supplies electrical power to operate subsea electronics
l Transmits electronic signals to execute operational commands subsea
l Returns electronic data to the surface from subsea instrumentation
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Subsea UmbilicalsSubsea Umbilicals
l Very many types/sizes/configurations/materials
l Main factors effecting design:
- Water depth - Chemical compatibility
- Tie-back type - Flow rates
- Internal pressures - Size of field
- Tie-back length - Service life
- Installation methods
l Very many types/sizes/configurations/materials
l Main factors effecting design:
- Water depth - Chemical compatibility
- Tie-back type - Flow rates
- Internal pressures - Size of field
- Tie-back length - Service life
- Installation methods
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Subsea Umbilical TypesSubsea Umbilical Types
Types
l Hydraulic Umbilicals
l Electrical Electric Umbilicals
l Electro-Hydraulic Umbilicals
Construction
l Thermoplastic Tubes Umbilicals
l Steel Tube Umbilicals
New Configurations
l Integrated Service Umbilicals (ISU)
l Integrated Production Umbilicals (IPU)
Types
l Hydraulic Umbilicals
l Electrical Electric Umbilicals
l Electro-Hydraulic Umbilicals
Construction
l Thermoplastic Tubes Umbilicals
l Steel Tube Umbilicals
New Configurations
l Integrated Service Umbilicals (ISU)
l Integrated Production Umbilicals (IPU)
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Direct or Piloted Hydraulic UmbilicalDirect or Piloted Hydraulic Umbilical
l Simple
- Short tiebacks
- Steel tube or hose
l All hydraulic systems
l Simple
- Short tiebacks
- Steel tube or hose
l All hydraulic systems
8
10
3 2
6
7
5
1
129
4
11
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Electro-Hydraulic UmbilicalElectro-Hydraulic Umbilical
l Complex
- Electrical power pairs
- Electrical signal pairs
- HP hydraulic supply- hose or tube
- LP hydraulic supply- hose or tube
l Most Common Type
- Deep water applications
- Long offsets
l Complex
- Electrical power pairs
- Electrical signal pairs
- HP hydraulic supply- hose or tube
- LP hydraulic supply- hose or tube
l Most Common Type
- Deep water applications
- Long offsets
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Subsea UmbilicalSubsea Umbilical
Design Considerations:l Water depthl Tie-back typel Tie-back lengthl Service lifel Installationl Chemical compatibilityl Flow ratesl Internal pressuresl Size of field
Design Considerations:l Water depthl Tie-back typel Tie-back lengthl Service lifel Installationl Chemical compatibilityl Flow ratesl Internal pressuresl Size of field
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Umbilical TerminationsUmbilical Terminations
Umbilical Termination Unit (UTA)
l Provides the subsea termination for
the umbilical
l Can be the subsea distribution point
for hydraulic fluid, electrical power,
electronic signals, and injection
chemicals
l Provides an interface for flying leads
or SDUs
l Can be retrieved for maintenance
Umbilical Termination Unit (UTA)
l Provides the subsea termination for
the umbilical
l Can be the subsea distribution point
for hydraulic fluid, electrical power,
electronic signals, and injection
chemicals
l Provides an interface for flying leads
or SDUs
l Can be retrieved for maintenance
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Subsea DistributionSubsea Distribution
Flying Leads
l Connects UTA or SDU to subsea
trees and manifolds
l Provides distribution of hydraulic
fluid, electrical power, electronic
signals, and injection chemicals to
subsea equipment
l Can be retrieved for maintenance
l May be high collapse resistant
thermoplastic or steel tube
configuration
Flying Leads
l Connects UTA or SDU to subsea
trees and manifolds
l Provides distribution of hydraulic
fluid, electrical power, electronic
signals, and injection chemicals to
subsea equipment
l Can be retrieved for maintenance
l May be high collapse resistant
thermoplastic or steel tube
configuration
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64
Subsea DistributionSubsea Distribution
Subsea Distribution Unit (SDU)
l Provides distribution of hydraulic fluid,
electrical power, electronic signals, and
injection chemicals
l Provides interface for flying leads
l Can be an isolation point for supplies
l Can be retrieved for maintenance
l Can be reconfigured subsea
Subsea Distribution Unit (SDU)
l Provides distribution of hydraulic fluid,
electrical power, electronic signals, and
injection chemicals
l Provides interface for flying leads
l Can be an isolation point for supplies
l Can be retrieved for maintenance
l Can be reconfigured subsea