Application for Variation of a Pipeline Licence - Pipeline Licence WA-20-PL (DT49GB)

Administered by Department of Industry, Science and Resources

Legislation au C2026G00447 In force Gazette

Legislation content

 

COMMONWEALTH OF AUSTRALIA

 

Sections 226 and 708

Offshore Petroleum and Greenhouse Gas Storage Act 2006

 

APPLICATION FOR VARIATION OF A PIPELINE LICENCE - PIPELINE LICENCE WA-20-PL (DT49GB)

 

I, STEVEN ROBERT TAYLOR, the Delegate of the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby give notice pursuant to sections 226 and 708 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 that an application has been received from

 

Chevron Australia Pty Ltd

(ACN 086 197 757)

 

Mobil Australia Resources Company Pty Limited

(ACN 000 113 217)

 

Shell Australia Pty Ltd

(ACN 009 663 576)

Osaka Gas Gorgon Pty Ltd

(ACN 139 074 847)

 

MidOcean Gorgon Pty Ltd

(ACN 138 592 042)

 

JERA Gorgon Pty Ltd

(ACN 140 107 464)

 

for the variation of Pipeline Licence WA-20-PL in the offshore area of Western Australia, as set out below.

 

Pursuant to subsection 226(3) of the Act, a person may make a written submission to the Titles Administrator about this application within 30 days from the date of this notice.

 

This notice takes effect on the day on which it appears in the
Australian Government Gazette.

 

Made under the Offshore Petroleum and Greenhouse Gas Storage Act 2006

of the Commonwealth of Australia.

 

STEVEN ROBERT TAYLOR

DELEGATE OF THE TITLES ADMINISTRATOR

ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA

OFFSHORE PETROLEUM JOINT AUTHORITY

 

APPLICATION FOR VARIATION OF

PIPELINE LICENCE WA-20-PL

 

The application seeks to effect the following amendments to the licence:

 

  1.       The ‘Authorised Route’ is varied by deleting the text and replacing it with the following:

 

“Authorised Route

 

“The pipeline route for the system of pipes commences at the Xmas tree production wing valve (PWV) on each well to Gorgon manifolds M1, M2, M3 and M4, tied back to two infield production flowlines connected to the Midline Pipeline Termination Structure and ending at the State Water Boundary, as described in the tables and the schematic ‘Gorgon Pipeline – Pipeline Licence WA-20-PL’ hereunder.

 

M4 Drill Centre to M3 Drill Centre

Feature

Easting (mE)

Northing (mE)

Bend Radius (m)

M4 Manifold

 268 300

7 723 080

 

M4 PTS

 268 370

7 723 110

 

PLET

 268 423

7 723 159

 

IP1

 269 159

7 723 015

3500

IP2

 269 611

7 722 993

1250

BI-1 MID

 269 609

7 723 008

 

IP3

 270 241

7 723 168

3500

IP4

 270 807

7 723 497

1250

BI-2 MID

 270 797

7 723 509

 

IP5

 271 239

7 723 988

3500

IP6

 271 533

7 724 573

1250

BI-3 MID

 271 518

7 724 576

 

IP7

 271 605

7 725 064

3500

IP8

 271 587

7 725 868

3500

IP9

 271 775

7 726 554

1250

BI-4 MID

 271 789

7 726 547

 

IP10

 272 074

7 727 003

3500

IP11

 272 656

7 727 593

2000

IP12

 272 864

7 727 981

1250

BI-5 MID

 272 857

7 727 984

 

IP13

 272 996

7 728 494

2000

PLET

 272 889

7 729 365

 

M3 PTS

 272 964

7 729 415

 

 

M3 Drill Centre to M2 Drill Centre

Feature

Easting (mE)

Northing (mE)

M3 Manifold

 273 067

7 729 457

M3 PTS

 272 964

7 729 415

PLET

 272 924

7 729 508

BI-1 MID

 273 574

7 731 391

IP-1

 273 986

7 732 588

BI-2 MID

 274 065

7 732 968

BI-3 MID

 274 318

7 734 188

PLET

 274 698

7 736 013

M2 PTS

 274 792

7 736 024

 

M2 Drill Centre to Midline PTS

Feature

Easting (mE)

Northing (mE)

M2 Manifold

 274 878

7 736 087

M2 PTS

 274 792

7 736 024

PLET

 274 822

7 735 932

BI-1 MID

 276 458

7 735 180

BI-2 MID

 277 730

7 734 595

BI-3 MID

 279 001

7 734 009

PLET

 280 684

7 733 234

Midline PTS

 280 780

7 733 279

 

M1 Drill Centre to Midline PTS

Feature

Easting (mE)

Northing (mE)

M1 Manifold

 275 565

7 741 875

M1 PTS

 275 471

7 741 824

PLET

 275 467

7 741 720

BI-1 MID

 276 568

7 739 990

BI-2 MID

 277 471

7 738 574

BI-3 MID

 278 278

7 737 309

BI-4 MID

 279 003

7 736 171

BI-5 MID

 279 647

7 735 159

PLET

 280 779

7 733 381

Midline PTS

 280 780

7 733 279

 

Midline PTS to Coastal Waters

Feature

Easting (mE)

Northing (mE)

Bend Radius (m)

Midline PTS

 280 780

7 733 279

 

PLET

 280 770

7 733 179

 

Wheatstone Trunkline Crossing

 284 734

7 731 353

 

Halyard Umbilical Crossing

 292 067

7 727 976

 

IP-1

 299 019

7 724 774

7000

Jansz Umbilical Crossing

 303 933

7 723 394

 

IP-2

 305 745

7 722 888

7000

IP-3

 322 604

7 715 950

7000

East Spar Crossing

 328 257

7 713 912

 

Coastal Waters Boundary

 329 613

7 713 423

 

 

Tie-in to M4 Drill Centre

Feature

Easting (mE)

Northing (mN)

GOR-4C Xmas Tree Production Wing Valve (PWV)

 268 313

7 723 042

GOR-4D Xmas Tree PWV

 268 288

7 723 050

GOR-4E Xmas Tree PWV

 268 270

7 723 067

GOR-4F Xmas Tree PWV

 268 262

7 723 093

M4 Manifold

 268 300

7 723 080

 

Tie-in to M3 Drill Centre

Feature

Easting (mE)

Northing (mN)

GOR-3B Xmas Tree PWV

 273 079

7 729 485

GOR-3C Xmas Tree PWV

 273 094

7 729 468

M3 Manifold

 273 067

7 729 457

 

 

Tie-in to M2 Drill Centre

Feature

Easting (mE)

Northing (mN)

GOR-2B Xmas Tree PWV

 274 890

7 736 114

GOR-2C Xmas Tree PWV

 274 906

7 736 098

M2 Manifold

 274 878

7 736 087

 

Tie-in to M1 Drill Centre

Feature

Easting (mE)

Northing (mN)

GOR-1A Xmas Tree PWV

 275 528

7 741 888

GOR-1B Xmas Tree PWV

 275 557

7 741 933

GOR-1C Xmas Tree PWV

 275 552

7 741 912

GOR-1D Xmas Tree PWV

 275 577

7 741 905

GOR-1E Xmas Tree PWV

 275 594

7 741 887

GOR-1F Xmas Tree PWV

 275 603

7 741 862

GOR-1G Xmas Tree PWV

 275 623

7 741 867

M1 Manifold

 275 565

7 741 875

 

Coordinates are based on Geodetic Datum of Australia (GDA94).”

 

  1.       The ‘Gorgon Pipeline – Pipeline Licence WA-20-PL 1 of 2’ schematic remains unchanged.


  1.       The ‘Gorgon Pipeline – Pipeline Licence WA-20-PL 2 of 2’schematic is varied by deleting the schematic and replacing it with the following schematic:

 

 

  1.       ‘Annexure A’ is varied by deleting the text and replacing it with the following:

 

“Annexure A

 

Design and Construction

The offshore pipeline shall be designed and constructed in accordance with Industry Standard DNV-ST-Fl0l - Submarine Pipeline Systems, which is incorporated in its entirety in Australian Standard AS2885.4 – Pipelines - Gas and Liquid Petroleum - Offshore Submarine Pipeline System.

 

Piping within Manifold and PTS structures shall be designed and constructed in accordance with Industry Standard ASME B31.8 – Gas Transmission and Distribution Piping Systems.

 

Basis of Design

The pipeline shall be designed to the following parameters:

 

Feature

Nominal
Diameter
(mm)

Nominal
Wall
Thickness
(mm)

Material

Design
Pressure
(MPa(a))

Design
Temperature
(°C)

Flowline
Length
(km)

All Xmas Trees Production Wing Valves to Manifolds

ID 174.3

15.1 CS +
7.3 CRA

DNV MWPL 450 + N06625 CLAD

38.5

-35 to 145

1.240

(15 jumpers 0.110 to 0.055 km each)

All Manifolds to PTSs

ID 438.0

27.7 CS +
4.0 CRA

DNV MWPL 450 + N06625 CLAD

38.5

-25 to 140

0.480

(4 jumpers approx. 0.12 km each)

M4 Drill Centre to M3 Drill Centre:

 

 

 

 

 

 

M4 PTS to PLET

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-10 to 135

0.090

PLET to PLET:

 

 

 

 

 

 

 

 

8.998

First 350 m

ID 550.0

30.6 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-5 to 135

Main

ID 550.0

29.8 CS + 3.0 CRA

DNV MWPL 450 + NS31603 CLAD

36.5

-5 to 115

Last 220 m

ID 550.0

30.6 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-5 to 115

PLET to M3 PTS

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

38.5

-10 to 135

0.105

M3 Drill Centre to M2 Drill Centre:

 

 

 

 

 

 

M3 PTS to PLET

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-10 to 135

0.122

PLET to PLET:

 

 

 

 

 

 

 

 

6.822

First 400 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-5 to 135

Main

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + NS31603 CLAD

36.5

5 to 115

Last 24 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

5 to 115

PLET to M2 PTS

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

38.5

-10 to 135

0.115

M2 Drill Centre to Midline PTS:

 

 

 

 

 

 

 

M2 PTS to PLET

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-10 to 135

0.123

PLET to PLET:

 

 

 

 

 

 

 

 

 

6.519

First 400 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-5 to 135

Main

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + NS31603 CLAD

36.5

5 to 115

Last 24 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

5 to 115

PLET to Midline PTS

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

38.5

6 to 50

0.134

M1 Drill Centre to Midline PTS:

 

 

 

 

 

 

 

M1 PTS to PLET

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-10 to 135

0.130

PLET to PLET:

 

 

 

 

 

 

 

 

 

9.925

First 400 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

-5 to 135

Main

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + NS31603 CLAD

36.5

5 to 115

Last 24 m

ID 600.0

31.2 CS + 3.0 CRA

DNV MWPL 450 + N06625 CLAD

36.5

5 to 115

PLET to Midline PTS

ID 600.0

33.6 CS + 3.5 CRA

DNV MWPL 450 + N06625 CLAD

38.5

6 to 50

0.144

Midline PTS to Coastal Waters:

 

 

 

 

 

 

 

Midline PTS to PLET

 

ID 800.0

38.0 CS

DNV SAWL 450

30.0

4 to 50

0.119

PLET to KP 43.34

 

ID 800.0

38.0 CS

DNV SAWL 450

30.0

4 to 50

43.340

KP 43.34 to Coastal    
        Waters

ID 800.0

38.0 CS

DNV SAWL 450

30.0

0 to 50

9.410

 

 

 

 

 

 

 

Total Pipeline System:

 

 

 

 

 

87.82

 

  • External corrosion protection: The pipeline shall be protected from external corrosion by a combination of anti-corrosion coating and a sacrificial anode cathodic protection system.
  • Substance to be conveyed: Wet Natural Gas - predominantly Methane with condensate.
  • The design life of all pipes is 50 years.
  • Design Capacity: Maximum daily capacity rate of the pipeline from the Midline PTS to Coastal Waters is 2076 MMscf/d.”

 

 

 

 

Interactions

Authorises

All Versions

Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.