11 Field Life Simulations

8/9/2019 11 Field Life Simulations

1/21

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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2/21

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


3/21

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


4/21

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.


5/21

Well Description

ggdrasil as


6/21

Production Network

ggdrasil as


7/21

Gas Lift Distribution

ggdrasil as


8/21

A More Complex Network

ggdrasil as


9/21

Gas Lift

ggdrasil as


10/21

Insulation Effects

ggdrasil as


11/21

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


WELLOPEN DELAY = 0 DAYS BRANCH “P5"

MAX GRAT = 1 MSm3/D BRANCH “P1“ “P2” “P3”

END_IF


WELLOPEN DELAY = 0 DAYS BRANCH “P6"

END_IF


WELLOPEN DELAY = 0 DAYS BRANCH “P7“ “S1”

END_IF

END_EVENTSERIES

EVENTSERIES

LABEL = "PPLAN"


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


12/21

Which Plateau?

ggdrasil as


13/21

Effect of Tubing Size

ggdrasil as


14/21

Power Consumption

ggdrasil as


15/21

Base Case Key Data

ggdrasil as


16/21

Regularity Impact

ggdrasil as


17/21

Life Time Variations

ggdrasil as


18/21

Practical Use Execution Times

ggdrasil as


19/21

Virtual Metering

ggdrasil asggdrasil as

Qoil

Qwater

Qgas

2

,

,,

i M i

C i M i

i

Y

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.


20/21

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...


21/21

Do it Anywhere

11 Field Life Simulations

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