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Administered by: Industry, Innovation and Science
Published Date 04 Jul 2016

 

 

COMMONWEALTH OF AUSTRALIA

 

Section 708

Offshore Petroleum and Greenhouse Gas Storage Act 2006

 

APPLICATION FOR GRANT OF A PIPELINE LICENCE

 

I, JOANNE JENNIFER BELL, Delegate of the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby give notice pursuant to section 708 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 that an application has been received from

 

 

Woodside Energy Ltd.

(ABN 63 005 482 986)

 

BHP Billiton Petroleum (North West Shelf) Pty. Ltd.

(ABN 41 004 514 489)

 

BP Developments Australia Pty. Ltd.

(ABN 54 081 102 856)

 

Chevron Australia Pty Ltd

(ABN 29 086 197 757)

 

Japan Australia LNG (MIMI) Pty Ltd

(ABN 18 006 303 180)

 

Shell Australia Pty Ltd

(ABN 14 009 663 576)

 

 

for the grant of a petroleum pipeline licence within the offshore area of Western Australia, to construct and operate a system of pipes, as set out below.

 

This notice takes effect on the day in which it appears in the

Australian Government Gazette.

 

Made under the Offshore Petroleum and Greenhouse Gas Storage Act 2006

of the Commonwealth of Australia.

 

 

JOANNE JENNIFER BELL

DELEGATE OF THE TITLES ADMINISTRATOR

ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA

OFFSHORE PETROLEUM JOINT AUTHORITY

 

ROUTE OF THE PIPELINE

 

The pipeline route is described in the table hereunder and displaced in the attached map
(Attachment 1), commencing at the LPA1 PLET to the GWA2 platform. Coordinates are based on Geodetic Datum of Australia (GDA94).

Feature ID

Feature Name

KP

Easting (mE)

Northing (mN)

1

 

0

359 484.50

7 806 936.00

2

TP1A

1.2

360 530.30

7 807 525.00

3

IP1

 

360 616.70

7 807574.00

4

TP1B

1.398

360 693.90

7 807 636.00

5

TP2A

2.53

361 576.30

7 808 345.00

6

IP2

 

361 637.60

7 808 394.00

7

TP2B

2.687

361 704.80

7 808 435.00

8

TP3A

3.72

362 587.10

7 808 972.00

9

IP3

 

362 652.00

7 809 011.00

10

TP3B

3.872

362 721.50

7 809 042.00

11

TP4A

4.672

363 452.00

7 809 368.00

12

IP4

 

363 538.20

7 809 407.00

13

TP4B

4.86

363 617.40

7 809 458.00

14

TP5A

 

364 688.80

7 810 156.00

15

IP ZRB 1

6.138

364 688.80

7 810 156.00

16

IP ZRB 2

7.418

365 873.10

7 810 642.00

17

IP ZRB 3

8.818

367 056.40

7 811 390.00

18

IP ZRB 4

9.918

368 074.10

7 811 807.00

19

IP ZRB 5

10.968

368 951.60

7 812 384.00

20

IP ZRB 6

12.018

369 919.50

7 812 791.00

21

IP ZRB 7

13.42

371 084.30

7 813 571.00

22

IP ZRB 8

14.907

372 148.60

7 814 609.00

23

IP ZRB 9

16.207

373 247.40

7 815 304.00

24

IP ZRB 10

17.207

373 976.30

7 815 989.00

25

IP ZRB 11

18.307

374 635.10

7 816 870.00

26

IP ZRB 12

19.419

375 136.40

7 817 862.00

27

IP ZRB 13

20.653

375 492.70

7 819 043.00

28

IP ZRB 14

21.653

375 974.30

7 819 920.00

29

IP ZRB 15

22.653

376 614.20

7 820 688.00

30

IP ZRB 16

23.853

377 544.00

7 821 447.00

31

IP ZRB 17

25.842

379 287.10

7 822 406.00

32

IP ZRB 18

27.838

381 177.20

7 823 046.00

33

IP ZRB 19

29.383

382 922.80

7 824 022.00

34

IP ZRB 20

31.838

384 466.90

7 825 293.00

35

IP ZRB 21

33.838

386 208.30

7 826 277.00

 

 

35.338

387 625.70

7 826 767.00

 

Notes:      (1) Lady Nora and Pemberton

                (2) Goodwyn Alpha (‘A’)

               

           

SPECIFICATIONS

 

Basis of Design

 

The pipeline design is based on the following parameters:

 

Item

Item Description

Details

1

Design and Construction

Offshore Standard DNV-OS-F101 – Submarine Pipeline Systems (Offshore Pipeline), which is incorporated in its entirety in Australian Standard AS2885.4 – Pipelines, Gas and Liquid Petroleum (Part 4: Submarine Pipelines)

2

Outside diameter of pipe

16” Production Flowline

KP0.0 - 9.2: 406.4 mm

KP9.2 - 35.4: 396.8 mm

3

Wall thickness of pipe (carbon steel)

16” Production Flowline

KP0.0 - 9.2: 25.4 mm

KP9.2 - 35.4: 20.6 mm

4

Minimum Clad Thickness

3.0 mm

5

Length

35.4 km (approximate)

6

Design life

25 years (approximate)

7

Pipeline Material

Production Flowline: Metallurgically Clad CRA Linepipe

Manifold Tie-in spools and 10” PLET/ILTA Piping: Metallurgically Clad CRA Linepipe

Platform Tie-in Spools and 16” PLET/ILTA Piping: Metallurgically Clad CRA Linepipe

8

Pipeline Grade

DNV-OS-F101

Production Flowline: Grade 415 (X60)

Manifold Tie-in spools and 10” PLET/ILTA Piping: Grade 450 (X65)

Platform Tie-in Spools and 16” PLET/ILTA Piping: Grade 450 (X65)

9

Maximum Allowable Operating Pressure

30.0 MPa(a)

10

Design Capacity

Upstream of and including ILTAs: 14.8 KT/d

Downstream of ILTAs, Upstream of GWA PLET: 21.6 KT/d

Downstream of GWA PLET: 21.6 KT/d

11

Maximum Design Temperature

Upstream of and including ILTAs: 119°C

Downstream of ILTAs, Upstream of GWA PLET: 119°C

Downstream of GWA PLET: 110°C

12

Minimum Design Temperature

Upstream of and including ILTAs: -22°C

Downstream of ILTAs, Upstream of GWA PLET: -17°C

Downstream of GWA PLET: -10°C

13

Characteristics of substance proposed to be conveyed

Commingled petroleum (wet gas, ranging 80-87% methane) from LPA, SRA, KDA and DOA.

14

Hydrate Management Strategy

Insulation and MEG Injection

15

Cathodic Protection

Sacrificial cathodic protection system installed on GWF-2 flowline, spools and structures. Full-shell, tapered bracelet type AL-Zn-In alloy anodes installed directly over flowline thermal insulation. Anode inserts directly welded onto doubler plates welded to flowline. Cathodic protection for spools provided by anodes on structures; cathodic protection for subsea structures provided by stand-off, Al-Zn-In anodes installed directly on structural members.

16

General plans and descriptions of pump stations, tank stations or valve stations and their equipment

None provided.

17

General plans and description of pigging facilities

No design requirement for maintenance pigging of production flowlines, but flowline is piggable from LPA PLET to MCS if required.

 

 


 


ATTACHMENT 1

 

PROPOSED ROUTE OF GWF-2 PIPELINE

Title: Proposed Route of GWF-2 Pipeline - Description: This is a design schematic of the proposed route of the proposed Greater Western Flank Phase 2 pipeline in the offshore area of Western Australia. A pipeline licence application has been lodged for this proposal.