COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
VARIATION OF PIPELINE LICENCE WA-20-PL
(GORGON TO BARROW ISLAND)
I, JOANNE JENNIFER BELL, delegate of the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby vary Pipeline Licence WA-20-PL, dated 9 July 2010 (the Licence), for which:
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)
Tokyo Gas Gorgon Pty Ltd
(ACN 138 592 042)
JERA Gorgon Pty Ltd
(ACN 140 107 464)
are the registered titleholders, as set out below.
The variation takes effect on the day on which this notice of variation is published in the Commonwealth 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
- The ‘Authorised Route’ is varied by deleting the text and replacing it with the following:
The pipeline route for the system of pipes commences at the well tie-ins 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 | 268 313 | 7 723 042 |
GOR-4D Xmas Tree | 268 288 | 7 723 050 |
GOR-4E Xmas Tree | 268 270 | 7 723 067 |
GOR-4F Xmas Tree | 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 | 273 079 | 7 729 485 |
GOR-3C Xmas Tree | 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 | 274 890 | 7 736 114 |
GOR-2C Xmas Tree | 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 | 275 528 | 7 741 888 |
GOR-1B Xmas Tree | 275 557 | 7 741 933 |
GOR-1C Xmas Tree | 275 552 | 7 741 912 |
GOR-1D Xmas Tree | 275 577 | 7 741 905 |
GOR-1E Xmas Tree | 275 594 | 7 741 887 |
GOR-1F Xmas Tree | 275 603 | 7 741 862 |
GOR-1G Xmas Tree | 275 623 | 7 741 867 |
M1 Manifold | 275 565 | 7 741 875 |
Coordinates are based on Geodetic Datum of Australia (GDA94).”
2. ‘Definitions’ and ‘Interpretation’ are varied by deleting the current text and substituting it with the following:
“In this document:
“the Act” means the Offshore Petroleum and Greenhouse Gas Storage Act 2006 and includes any Act with which that Act is incorporated and words used in this document have the same meanings as in the Act; and
“the Regulations” means regulations made under the Act,
“Pipeline” has the meaning given in the Act.”
References within this document to “the pipeline” or “the flowline” are taken to refer to a pipe, a flowline, or a system of pipes.”
3. ‘Conditions of Licence’ is varied by:
(a) Deleting ‘Section 3 Standards and Integrity’ heading and text;
(b) Deleting ‘Section 4 Personnel and Contractors to be Informed’ heading and text;
(c) Under the heading ‘Section 5 Pipeline Particulars’;
- The heading is updated to ‘Section 3 Pipeline Particulars’;
- The numbering of ‘Section 5.1’ is updated to ‘Section 3.1’ and the text is deleted and replaced with the following:
‘The Licensee must construct the Licensed Pipeline in accordance with, and ensure that the Licensed Pipeline meets, and continues to meet, the specifications set out in the Basis of Design, unless and to the extent that the Joint Authority otherwise approves.’
c. Deleting ‘Section 5.2’ heading and text;
(d) Deleting ‘Section 6 – Pipeline Management Plan and Pipeline Safety Case’ heading and text;
(e) Deleting ‘Section 7 – Environment Management Plans’ heading and text;
(f) Deleting ‘Section 8 – Designated Authority May Require Report’ heading and text; and
(g) The numbering of ‘Section 9’ is updated to ‘Section 4’.
4. ‘Annexure A’ is varied by deleting the heading and text.
5. ‘Annexure B’ is varied by deleting the heading and text.
6. ‘Annexure C’ is varied by;
- Updating the numbering to ‘Annexure A’; and
- Deleting the current text and replacing with the following:
“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 | Nominal | Material | Design | Design | Flowline |
All Xmas Trees to Manifolds | ID 174.3 | 15.1 CS + | 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 + | 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 | ID 800.0 | 38.0 CS | DNV SAWL 450 | 30.0 | 0 to 50 | 9.410 |
|
|
|
|
|
|
|
Total Pipeine 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 approximately 14% CO2.
- The design life of all pipes is 50 years.”
7. ‘Annexure D’ is varied by deleting the heading and text.