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Flow Assurance and Dynamic Simulations SeminarStavanger
21.10.2010
Gjermund Weisz SPT Group
Gja Flow Assurance SystemReal Time Production Simulation
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Why are Flow Assurance Systems important?
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Online flow assurance for optimization and control through
automated monitoring and prediction of oil and gas operations
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Expand your actual Operating Envelope
0
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0 100 200 300 400 500 600 700 800 900 1000
STANDARD LIQUID RATE [Sm]
G
A
S
O
I
L
R
A
T
I
O
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S
m
/
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m
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Stable Operating Envelope
Standard Liquid Rate [ Sm/d]
G
a
s
O
i
l
R
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o
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S
m
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S
m
]
Hydrate Formation Temp. 18C
Wax Appearance Temp. 32C
Stability P = 1 barStability P = 6 bar
Reservoir Pressure 80 bara Stability P = 12 bar
Gas Velocity Limit 12 m/s
Erosional Velocity Limits
Full Operating Envelope
Normal OperatingMargins
OLGAOnline
enablesoperation
closer to margins
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Identified Operational Benefits:
Ensure stable operation and optimised production Reduce
unplanned shutdowns Faster recovery on start-up Early water break
through detection Optimise inhibitor and gas injection Reduce
uncertainty better decision making Improved testing, operation and
optimisation of wells Extensive virtual instrumentation Focal-point
for multi-discipline knowledge building
Bring Dynamic Flow Assurance into daily operations
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Install Base of OLGA Online...
40 Sites
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OLG
A O
nline Architecture
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FA Challenges - The Gja Field
Routing of well streams from oil to gas condensate pipelines
Virtual Meetering backup Control of temperature (wax, hydrates)
Control of slugs Early water/gas detection Planning of production
Create/Validate operational procedures
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System Integration: OSI PI historical
database
Model (OLGA): Production wells (13) 5 subsea manifolds 2
flowlines (one
dedicated for oil and one for gas wells)
1st and 2nd stage separators topside
Gas lift and gas warm up dynamics
Modes: Real-time Planning (what-if)
Applications: Transparent production
system Gas/water
breakthrough advisor Liquid inventory
advisor Slugging advisor MEG tracking advisor Planned
production
forecasting advisor Tuning system
Includes flow assuranceservice contract for 5
yearsplus options for 3+3 years
Client/Operator: GDF SUEZSite: NorwayDelivery: 2010
Gja Flow Assurance System (FAS)
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Gja FAS Overview
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Real-Time Model (RTM) Oil Well With Gas Lift
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RTM Profile Plot for Well
PresenterPresentation NotesReal Time mode/model
RTM for Gja, Well B1. [Gaslift, MEG inj., valves].
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RTM Trend Plot for Well
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RTM Hydrate Alarm
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RTM Water and Gas Breakthrough Advisors
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RTM Slug and Surge Advisor
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RTM Liquid Inventory
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RTM Tuning
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What-If Model Second Stage Separator
PresenterPresentation Notes
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What-If Model Template B
PresenterPresentation Notes
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Planning Tool
Pig signal to launch pig intoPipeline 6Current time
Select Pig # 1
Input Simulation tags
Time to start ramp Down
Select Pig # 2
Pig signal to launch pig intoPipeline 6
Launch Pig # 1
Launch Pig # 2
Reduce flow rate
Increase flow rate
Reduce flow rate
Start ramp up to 1600
Pig signal to launch pig intoPipeline 6Current time
Select Pig # 1
Input Simulation tags
Time to start ramp Down
Select Pig # 2
Pig signal to launch pig intoPipeline 6
Launch Pig # 1
Launch Pig # 2
Reduce flow rate
Increase flow rate
Reduce flow rate
Start ramp up to 1600
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GjaFlow Assurance System
GDF SUEZ Integrated Operations ambitions are to increase
Hydrocarbon recovery factor, increase preventive maintenanceand
reduce operational expenditures through better and faster
decisions through collaboration with external vendors and
service companies like SPT Group
Terje Overvik, Managing Director for GDF SUEZ E&P Norge
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Thank you for your attention !
Slide Number 1Why are Flow Assurance Systems important?Slide
Number 3Slide Number 4Bring DynamicFlow Assuranceinto daily
operationsSlide Number 6Slide Number 7FA Challenges - The Gja
FieldGja Flow Assurance System (FAS)Gja FAS OverviewReal-Time Model
(RTM) Oil Well With Gas LiftRTM Profile Plot for WellRTM Trend Plot
for WellRTM Hydrate AlarmRTM Water and Gas Breakthrough AdvisorsRTM
Slug and Surge AdvisorRTM Liquid InventoryRTM TuningWhat-If Model
Second Stage SeparatorWhat-If Model Template BPlanning ToolSlide
Number 22Slide Number 23
