COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
VARIATION OF PIPELINE LICENCE WA-19-PL
(JANSZ-IO TO BARROW ISLAND) (L8X44D)
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 vary Pipeline Licence WA-19-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)
MidOcean 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 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
- 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 Jansz drill centre manifolds DC-1, DC-2 and DC-3, and includes the Subsea Compression Station (SCSt) and Subsea Compression Manifold Structure (SCMS) all of which tie back to the Midline Pipeline Termination Structure (Midline PTS) and ends at the State Water Boundary as described in the tables and the schematic 'Jansz Pipeline - Pipeline Licence WA-19-PL' hereunder:
Tie-in to DC-1 Drill Centre | ||
Feature | Easting (mE) | Northing (mN) |
JZI-1B Xmas Tree | 245 530 | 7 805 853 |
JZI-1C Xmas Tree | 245 501 | 7 805 856 |
JZI-1D Xmas Tree | 245 487 | 7 805 886 |
JZI-1E Xmas Tree | 245 500 | 7 805 911 |
JZI-1F Xmas Tree | 245 499 | 7 805 931 |
DC-1 Manifold | 245 540 | 7 805 895 |
Tie-in to DC-2 Drill Centre | ||
Feature | Easting (mE) | Northing (mN) |
JZI-2B Xmas Tree | 253 220 | 7 809 906 |
JZI-2C Xmas Tree | 253 249 | 7 809 904 |
JZI-2D Xmas Tree | 253 265 | 7 809 875 |
JZI-2E Xmas Tree | 253 250 | 7 809 849 |
JZI-2F Xmas Tree | 253 251 | 7 809 829 |
DC-2 Manifold | 253 211 | 7 809 865 |
Tie-in to DC-3 Drill Centre | ||
Feature | Easting (mE) | Northing (mN) |
JZI-3C Xmas Tree | 239 771 | 7 802 849 |
JZI-3D Xmas Tree | 239 762 | 7 802 881 |
JZI-3E Xmas Tree | 239 780 | 7 802 903 |
JZI-3F Xmas Tree | 239 782 | 7 802 923 |
DC-3 Manifold | 239 816 | 7 802 880 |
DC-1 Drill Centre to Midline PTS | ||
Feature | Easting (mE) | Northing (mN) |
DC-1 Manifold | 245 540 | 7 805 895 |
PLET | 245 618 | 7 805 841 |
PLET | 249 352 | 7 807 738 |
Midline PTS | 249 354 | 7 807 834 |
DC-2 Drill Centre to Midline PTS | ||
Feature | Easting (mE) | Northing (mN) |
DC-2 Manifold | 253 211 | 7 809 865 |
PLET | 253 132 | 7 809 920 |
PLET | 249 375 | 7 807 924 |
Midline PTS | 249 354 | 7 807 834 |
Midline PTS to SCMS | ||
Feature | Easting (mE) | Northing (mN) |
Midline PTS | 249 354 | 7 807 834 |
SCMS | 249 266 | 7 807 878 |
SCMS to SCSt | ||
Feature | Easting (mE) | Northing (mN) |
SCMS | 249 266 | 7 807 878 |
SCSt | 249 197 | 7 807 798 |
DC-3 Drill Centre to DC-1 Drill Centre | |||
Feature | Easting (mE) | Northing (mN) | Bend Radius (m) |
DC-3 Manifold | 239 816 | 7 802 880 |
|
PLET | 239 866 | 7 802 820 |
|
IP1 | 243 036 | 7 803 747 | 4000 |
PLET | 245 480 | 7 805 956 |
|
DC-1 Manifold | 245 540 | 7 805 895 |
|
Midline PTS to Coastal Waters | |||
Feature | Easting (mE) | Northing (mN) | Bend Radius (m) |
Midline PTS | 249 354 | 7 807 834 |
|
PLET | 249 457 | 7 807 819 |
|
IP-1 | 254 713 | 7 797 845 | 10000 |
IP-2 | 268 515 | 7 782 080 | 12500 |
IP-3 | 272 964 | 7 769 520 | 10000 |
IP-4 | 279 022 | 7 760 368 | 4000 |
IP-5 | 279 537 | 7 759 226 | 4000 |
IP-6 | 282 368 | 7 755 620 | 7000 |
Wheatstone Trunkline Crossing | 289 218 | 7 744 687 |
|
Halyard Umbilical Crossing | 297 080 | 7 732 142 |
|
IP-7 | 297 769 | 7 731 044 | 8000 |
IP-8 | 301 692 | 7 725 476 | 7000 |
IP-9 | 307 956 | 7 722 503 | 7000 |
IP-10 | 309 905 | 7 721 956 | 7000 |
IP-11 | 320 622 | 7 717 026 | 7000 |
IP-12 | 325 486 | 7 715 320 | 7000 |
East Spar Crossing | 328 758 | 7 714 024 |
|
Coastal Waters Boundary | 329 766 | 7 713 625 |
|
Coordinates are based on Geodetic Datum of Australia (GDA94).
- Annexure A is varied by deleting the text and replacing it 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 (including Subsea Compression Manifold Structure (SCMS)) shall be designed and constructed in accordance with Industry Standard ASME B31.8 – Gas Transmission and Distribution Piping Systems.
The compressors within the Subsea Compression Station (SCSt) shall be designed and constructed in accordance with the following Industry Standard API 617 – Axial and Centrifugal Compressors and Expander Compressors.
The pumps within the SCSt shall be designed and constructed in accordance with the following Industry Standard API 610 – Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries.
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 | 33.6 | -35 to 72 | 1.160 (14 jumpers 0.110 to 0.055km each) |
DC-3 Drill Centre to DC-1 Drill Centre |
|
|
|
|
|
|
DC-3 Manifold to PLET | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | 0.087 |
PLET to PLET | ID 400.0 | 21.9 CS + 3.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -15 to 65 | 6.567 |
PLET to DC-1 Manifold | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | 0.107 |
DC-2 Drill Centre to Midline PTS |
|
|
|
|
|
|
DC-2 Manifold to PLET | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | 0.115 |
PLET to PLET |
|
|
|
|
| 4.255
|
First 24 m | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | |
Main | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + NS31603 CLAD | 36.5 | -5 to 55 | |
Last 24 m | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + N06625 CLAD | 36.5 | 0 to 50 | |
PLET to Midline PTS | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | 0 to 50 | 0.122 |
DC-1 Drill Centre to Midline PTS |
|
|
|
|
|
|
DC-1 Manifold to PLET | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | 0.113 |
PLET to PLET |
|
|
|
|
| 4.190
|
First 24 m | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | -25 to 65 | |
Main | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + NS31603 CLAD | 36.5 | -5 to 55 | |
Last 24 m | ID 550.0 | 27.1 CS + 3.0 CRA | DNV MWPL 450 + N06625 CLAD | 36.5 | 0 to 50 | |
PLET to Midline PTS | ID 550.0 | 26.2 CS + 3.5 CRA | DNV MWPL 450 + N06625 CLAD | 28.5 | 0 to 50 | 0 .113 |
Midline PTS to SCMS |
|
|
|
|
|
|
24inch Import from DC-1 to SCMS | ID 550.0 | 26.2 + 4.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.4 | -20 to 50 | 0.106 |
24inch Import from DC-2 to SCMS | ID 550.0 | 26.2 + 4.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.4 | -20 to 50 | 0.116 |
30inch export from SCMS to PTS | ID 700.0 | 31.2 CS + 4.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.4 | -20 to 50 | 0.117 |
SCMS to SCSt |
|
|
|
|
|
|
24inch import SCMS to SCSt | ID 550.0 | 26.2 + 4.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.4 | -20 to 50 | 0.124 |
24inch export SCSt to SCMS | ID 550.0 | 26.2 + 4.0 CRA | DNV MWPL 450 + N06625 CLAD | 28.4 | -20 to 50 | 0.109 |
Midline PTS to Coastal Waters |
|
|
|
|
|
|
Midline PTS to PLET
| ID 700.0 | 36.6 CS | DNV SAWL 450 | 28.5 | 0 to 50 | 0.130 |
PLET to KP 30.0
| ID 700.0 | 36.6 CS | DNV SAWL 450 | 28.5 | -3 to 50 | 30.000 |
KP 30.0 to KP 53.562
| ID 700.0 | 34.2 CS | DNV SAWL 450 | 28.5 | -7 to 50 | 23.562 |
KP 53.562 to KP 54.238
| ID 700.0 | 36.6 CS | DNV SAWL 450 | 28.5 | -7 to 50 | 0.676 |
KP 54.238 to KP 71.677
| ID 700.0 | 34.2 CS | DNV SAWL 450 | 28.5 | -7 to 50 | 17.439 |
KP 71.677 to Coastal Waters | ID 800.0 | 31.2 CS | DNV SAWL 450 | 28.5 | -3 to 50 | 56.823 |
|
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|
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Total Pipeline System: |
|
|
|
|
| 146.032 |
- 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 0.07% CO2.
- The design life of all pipes is 50 years.