21 peo surface system software gap hut 2015

7/23/2019 21 PEO Surface System Software GAP HUT 2015

1/23

P. BehrenbruchProduction Engineering

21 GAPp 1

HCMUT 13-18 April 2015

Production System

Reservoirs Wells Facilities and Surface System

MBAL PROSPER GAP

GAP analyses elements

in terms of their deliverability/

transferring capacity.

PVTP

Production Engineering and OptimisationSurface System Software - GAP

Prof Peter Behrenbruc h


2/23


21 GAPp 2


Examples

of

Subsea Systems


3/23


21 GAPp 3


N

JABIRU-9ST3

JABIRU-5A

JABIRU-2

JABIRU-3

JABIRU-7

JABIRU-10

JABIRU-8A

JABIRU-11

JABIRU-9/ 9ST

SL

SL

SL

JABIRU-6SL

JABIRU-8AST1

JABIRU-6

JABIRU-1A

JABIRU-7ST

JABIRU-4

JABIRU-11ST

SL

BHL

BHL

BHL

BHL

0 1 km

BHL

Jabiru FieldTop of Reservoir


4/23


21 GAPp 4


FLOWLINES

SURFACE LOCATIONRESERVOIR PENETRATION

BOTTOM HOLE LOCATION

HYDROCARBON DISTRIBUTIONJABIRU-9ST3

JABIRU-11ST1

JABIRU- 8AST1

JABIRU- 6

JABIRU- 4

JABIRU- 5A

JABIRU- 10

JABIRU- 2

JABIRU- 1A

JABIRU

VENTURE

(FPSO)JABIRU - 3

JABIRU - 7JABIRU7ST1

0 1Km

AC/L1

JABIRU FIELD

Jabiru DevelopmentFacility and Flowline Routing


5/23P. Behrenbruch

Production Engineering

21 GAPp 5


H

H

H

H

H

H

H

H

H

H

L

L

L

L

L

L

L

Subcrops of Sandstone UnitsAPPRAISAL 1

CHALLIS-4

APPRAISAL 3

CHALLIS-5CHALLIS-1

CHALLIS-10

CHALLIS-2A

CHALLIS-3

CHALLIS-6

CHALLIS-7

CHALLIS-8

CHALLIS-9CHALLIS-11

WELL D

WELL B

WELL N

WELL M

(Recomplete C2.2)

WELL C

WELL A

WELL F

WELL E

WELL G

WELL H

0 0.5 1 Km

1350

1350

C3.0

C3.0

L

C2.2

C3.0

C3.2

C6.0

C4.0

C5.0

H

Challis Field: Subcrop Map


6/23P. Behrenbruch

Production Engineering

21 GAPp 6


FLOWLINES

CASSINI-2

CASSINI-1

CHALLIS-4

CHALLIS-5

CHALLIS-1

CHALLIS-10

CHALLIS-2A

CHALLIS-3

CHALLIS-6

CHALLIS-7

CHALLIS-8

CHALLIS-9

CHALLIS-11

CHALLIS VENTURE

0 1Km

TIMOR SEA

AC/L3

Challis-Cassini Field

Challis-Cassini Field: Flowline Layout


7/23


21 GAPp 7


Griffin AreaTop Zeepaard Formation Depth Map

WA-213-P

WA-12-L

WA-10-L

0 2 km

249,000 254,000 259,000 264,000

7,660,000

7,655,000

7,650,000

7,645,000

GRIFFIN-1

GRIFFIN-3

GRIFFIN-2

HILDA-1A

GRIFFIN-4

RAMILLIES-1

GRIFFIN-7

CHINOOK-2

CHINOOK-1

SCINDIAN-2

SCINDIAN-1A


8/23


21 GAPp 8


WA-213-P

WA-12-L

WA-10-L

0 2 km

249,000 254,000 259,000 264,000

7,660,000

7,655,000

7,650,000

7,645,000

GRIFFIN-5(H)

GRIFFIN-1

GRIFFIN-3

GRIFFIN-2

HILDA-1A

GRIFFIN-4

RAMILLIES-1

GRIFFIN-6/ST-1(H)

GRIFFIN-7

CHINOOK-2

CHINOOK-1

SCINDIAN-2/ST-1(H)

SCINDIAN-1A

Griffin AreaTop Birdrong Formation Depth Map


9/23


21 GAPp 9


Griffin Project - Actual Subsea Layout

DISTRIBUTIONSKID

OFFTAKETANKER

CH-1

SC-C

SC-1A

MID-DEPTH BUOY

ANCHOR

GAS EXPORT LINE

GR-5

GR-E

GR-A

GR-T

GR-D

GR-2

GR-1

GR-3

FPSO


10/23


21 GAPp 10


Typhoon Field, Gulf of MexicoB4 / B4.5 Structure Map

Graben

East-of-Graben

236 Area

236-2

236-1

236-2 ST

ST1

237-3

OH

237-2237-1

ST2


11/23


21 GAPp 11


Typhoon Field Layout

5 Coflexip Flowlines

Cameron Horizontal Trees

DH Control

Down Hole Nova Gauges

Coated 4.5 Tubulars

Down Hole Chemical Injection

Smart Wells

Smart Well

TLP

Typical, each well(1) Flowline

(1) Umbilical

Subsea Tree

Well GC237-3

Subsea Tree

Well GC237-1

Subsea Tree

Well GC237-2

Oil Export Pipeline

(by El Paso)

Gas Export Pipeline

(by ANR)

Subsea Tree

Well GC236-2


12/23


21 GAPp 12


Well Well

Manifold

Manifold

Pipeline

Separator

GAP Models

and Software


13/23


21 GAPp 13


SS ShlfRi sB

Surf M-fold

Surf Sep#1

JB

N1

N2A

N3A

N4A

N5AN6A

FPF #2

W5

W9

W6

W8

W7

N7AN8AN9AN10A

MW 5-9

MWB1

SurfSep#3

JBW2 Heat Jt

WR2

WR3

WR4

Surf Flw Ln

SS ShlfRi s

Pup

Heater

Gulf of Mexico, Integrated Production Model


14/23


21 GAPp 14


GAP Achievable Tasks

Completion Surface Production / Injection Network Modelling

Optimisation

- Naturally flowing oil wells

- Gas-lift wells

- ESP operated wells

- Condensate or gas producers

- Water producers- Water or gas injectors

GAP Opt imiser co ntro ls p roduct ion rates using wel lhead chokes,

ESP operat ing frequenc ies or al locat ion of l i f t gas to maximise

hydrocarbon produc t ion whi le honour ing co nstra ints on the

gathering sys tem, wel ls and reservoirs.

Allocation of Production

Predictions (Production Forecast)


15/23


21 GAPp 15


GAP Philosophy

Input system model data

Validate model by matching

Close the Loop before proceeding

A Snapshot of field performance

at a certain time

Use model for prediction


16/23


21 GAPp 16


GAP Technique

Calculation and optimisation based on nodes: connections points

Separator is the end node in GAP with fixed terminal pressure

Two levels of calculation:

- Level 1: Solving the network

- Level 2: Optimising the network response


17/23


21 GAPp 17


Optimiser

Optimising maximum oil/ gas production or gross revenue

by altering certain conditions, such as:

- back pressure of wells by applying wellhead chokes

- gas-lift gas allocated to individual gas-lift wells

- frequency of operation of ESP fitted wells

- frequency of operation of pumps/ compressors

- inline choke sizes

while honoring constraints (min water production, max pressure

constraint, velocity constraints, etc.).


18/23


21 GAPp 18


GAP Methodology

Generateto find well responses

by running PROSPER

Bui ldto find system responseby combining well responses to form a single,

composite response at nodes

Composite response by combining nodes

Flow streams combined optimally

Allocate gas and calculate pressure and rates


19/23


21 GAPp 19


Setting Up of GAP

Define system elements

- wells, joints, chokes, pipelines, pumps, compressors,

Graphically connect components- starting point must be a tank (reservoir)

- end point must be a separator

Enter system data- pipeline geometry, environment variables, compressor

properties,


20/23


21 GAPp 20


Calculation of Actual Production

Validation of IPR/ VLP generation and fitting process

Enter test flowing pressures to check that the well

model predicts measured rates

To match field production rates, test pressures must all

be compatible

Model errors now confined to pipeline pressure drops


21/23


21 GAPp 21


Pipelines

Uses standard correlations as in PROSPER

Pipeline pressure losses matched to measured

pressures and rates


22/23


21 GAPp 22


Pipeline Matching

As for PROSPERgravity and friction are separated

Where no elevation change, Parameter 1 = 1.0

Data must often be inferred, e.g. rates by subtraction

This step is vital to obtain a good match on actual production


23/23


21 GAPp 23


Constraints

Not needed in actual phase

Do not over-constrain

- ensure that constraints do not conflict

- use constraints sparingly

For every constraint, GAP must have themeans to meet it

21 peo surface system software gap hut 2015

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