11 field life simulations
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8/9/2019 11 Field Life Simulations
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Flow Assurance using
Life of Field Simulations
drasil as
• Reservoir diagnostics
• Well performance
• Remedial actions
• Concept evaluations
• Drilling schedule
• Drainage strategy
• Design parameters
• Transient
AppraisalField
developmentEngineering Operation
• M/E balances
• Design
• Accidental analysis
• Production allocation
• Production optimization
• What-if scenarios
• Identify bottlenecks
• Tie-back evaluations
Through Field Life
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DEFT Well Image
Normal ized r espons es vs. MD
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Flow Assurance in Every Phase
ggdrasil as
Operation
•
Production optimization• Value of debottlenecking
• What-if scenarios
• Tie-back evaluations
• Well deliverability
• Forecasting
• History matching
METTE
Optimize production
Model matching
Production allocation
Forward predictions
Thermal insulationShut down times
Flare volumes
Liquid disposal
Well delierability
Reservoir diagnosticRemedial actions
Cash profiles
Differential income
Production phasingDesign parameters
Well performance
Flow line sizing
Gas lift benefit
VFP tables
Multidiscipline
Consistent use of data
Appraise• Reservoir behaviour
• Well performance
Engineering
• M/E balances
• Design• Accidental analysis
Field developement
• Concept evaluation
• Drilling schedule
• Drainage strategy
• Flow assurance
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Integrated System Analysis
ggdrasil as
From res. Sim. processes:
• Well phase fractions
• Flowing bottom hole pressure
• IPR data
• Regularities
From network simulation process:
• Well phase guide rates
• Well open / close commands
• Well intervention commands
Reservoir
simulation
processes
Production/service
network simulationprocess
Result storage
Result storage
Result storage
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Define System Parameters
ggdrasil as
Component parametrizations(chokes, pumps,
sources, compressors ...)
Fluid property/rheologydata for wells, flow lines
and mass sources.
Parameterization of wells and flow lines.
Define location of sensors and active components.
Define network topologies and controller components.
Define external processes Implement run time events
Set interfacing networks Time series for parameters
Pig tracing and hold-up
Define and execute multiple scenarios.
Parametrizations well and flow
line walls.
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Well Description
ggdrasil as
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Production Network
ggdrasil as
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Gas Lift Distribution
ggdrasil as
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A More Complex Network
ggdrasil as
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Gas Lift
ggdrasil as
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Insulation Effects
ggdrasil as
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Simulation Events
ggdrasil asggdrasil as
EVENTSERIES
LABEL = "WELL_OPEN"
IF(TIME ABSOLUTE YMD >= 20200101 )
WELLOPEN DELAY = 0 DAYS BRANCH “P1" “P2" “P3" “P4" END_IF
IF(TIME ABSOLUTE YMD >= 20200217 )
WELLOPEN DELAY = 0 DAYS BRANCH “P5"
MAX GRAT = 1 MSm3/D BRANCH “P1“ “P2” “P3”
END_IF
IF(TIME ABSOLUTE YMD >= 20200403 )
WELLOPEN DELAY = 0 DAYS BRANCH “P6"
END_IF
IF(TIME ABSOLUTE YMD >= 20200526 )
WELLOPEN DELAY = 0 DAYS BRANCH “P7“ “S1”
END_IF
END_EVENTSERIES
EVENTSERIES
LABEL = "PPLAN"
IF(TIME ABSOLUTE YMD >= 20200101 )
TARGET ORAT = 11000 GROUP “FIELD”
MAX LRAT = 25000 GROUP “FIELD” MAX WRAT = 20000 GROUP “FIELD”
SET GROUPEFF = 0.96 GROUP “FIELD”
SET WELLEFF = 0.98 BRANCH “P1” “P2” “P3”
SET WELLEFF = 0.98 BRANCH “P4” “P5” “P6” “P7”
SET WELLEFF = 0.96 BRANCH “S1”
SET MAXPOWER = 5 MW ITEM “BOOST” BRANCH “SPOOL”
TARGET POUT = 35 BARA BRANCH “MANIFOLD”
END_IF
IF ( GROUP “FIELD” ORATPOT = 20250823)
NEWCONFIG FILE = “P3_ST.bch" BRANCH “P3"
NEWCONFIGPVT FILE = "PVT_ST.bch" BRANCH “P3"
END_IF
END_EVENTSERIES
EVENTSERIES
LABEL = “SINGLE_LINE“
IF( GROUP “FIELD” GRAT < 1 MSm3/D )
SET FACTOR = 1 - BRANCH “SPOOL" ITEM "MUL"
SET FACTOR = 1 - BRANCH “MANIFOLD" ITEM "MUL“
END_IF
END_EVENTSERIES
EVENTSERIES
LABEL = "REOPEN_WELLS"
TYPE = STATIC
IF(TIME ABSOLUTE YMD >= 20270101 AND TIME DELTA DAYS >= 365 )
WELLOPEN DELAY = 0 DAYS BRANCH “P3" “P5" “P7"
END_IF
END_EVENTSERIES
EVENTSERIES
LABEL = “GL_PPLAN“
NETWORKS = “GASLIFT”
IF(TIME ABSOLUTE YMD > 20200101 )
TARGET POUT = 150 BARA BRANCH “GL_MANIFOLD"
TARGET TOUT = 60 C BRANCH “GL_MANIFOLD"
END_IFEND_EVENTSERIES
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Which Plateau?
ggdrasil as
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Effect of Tubing Size
ggdrasil as
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Power Consumption
ggdrasil as
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Base Case Key Data
ggdrasil as
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Regularity Impact
ggdrasil as
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Life Time Variations
ggdrasil as
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Practical Use Execution Times
ggdrasil as
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Virtual Metering
ggdrasil asggdrasil as
Qoil
Qwater
Qgas
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i M i
C i M i
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Y Y w
Object function
as spatial surface
Vector search path
Oil and/or water and/orgas flows are freevariables.
Minimize object functiondefined by differencesin measured and
calculated quantities:
Phase flows reflect
minimum in objectfunction.
Object function mayreflect well, flow line ornetwork of same.
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Field Production Management
ggdrasil as
Automated extraction
of production data
Filtering
- Semiautomatic removal
of spurious data
Parameter tuning based on
reference data.
- Semiautomatic adjustment
of correction factors
Calculate flows
from measured data
Merge well
production data to
history database
History match reservoir
models from calculated
and measured parameters
Update calibration settings
Production optimization providing valve
set points, lift gas usage...
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Do it Anywhere
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