COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
VARIATION OF PIPELINE LICENCE WA-31-PL
(LAMBERT DEEP PIPELINE) (08-2024)
I, GRAEME ALBERT WATERS, the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby vary Pipeline Licence WA-31-PL, dated 9 December 2021 (the Licence), for which:
Woodside Energy Ltd.
(ACN 005 482 986)
BP Developments Australia Pty. Ltd.
(ACN 081 102 856)
Chevron Australia Pty Ltd
(ACN 086 197 757)
Japan Australia LNG (MIMI) Pty. Ltd.
(ACN 006 303 180)
Shell Australia Pty Ltd
(ACN 009 663 576)
Woodside Energy (North West Shelf) Pty Ltd
(ACN 004 514 489)
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
GRAEME ALBERT WATERS
TITLES ADMINISTRATOR
ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA
OFFSHORE PETROLEUM JOINT AUTHORITY
- The Route of The Pipeline is varied by deleting all the current text and replacing with the following:
“The pipeline route commences at the Universal Connection System (UCON) connector face on the flexible flowline downstream of the Lambert Deep manifold and finishes at the flange face upstream of the riser emergency shutdown valve (RESDV) on the Angel Platform. Features of the route are described in the table hereunder and the route is further described in the attached route map (Attachment 1). The pipeline licence route corridor extends ± 40 m either side of the provided route. Coordinates are provided to the Geodetic Datum of Australia (GDA94), UTM Zone 50.”
Main Halyard Flowline System Co-Ordinates | ||||
| Feature Name | KP | Easting (m) | Northing (m) |
1. | UCON Connector face at LD Manifold | 0.0 | 445 763 | 7 850 743 |
2. | MLC-15 | 0.997 | 446 474 | 7 850 255 |
3. | MLC-14 | 1.993 | 447 281 | 7 849 687 |
4. | MLC-13 | 2.988 | 448 090 | 7 849 128 |
5. | MLC-12 | 3.985 | 448 904 | 7 848 555 |
6. | MLC-11 | 4.987 | 449 719 | 7 847 982 |
7. | MLC-10 | 5.978 | 450 534 | 7 847 410 |
8. | MLC-09 | 6.972 | 451 347 | 7 846 838 |
9. | MLC-08 | 7.783 | 451 915 | 7 846 270 |
10. | MLC-07 | 8.954 | 452 478 | 7 845 696 |
11. | MLC-06 | 9.403 | 453 144 | 7 845 235 |
12. | MLC-05 | 10.284 | 453 874 | 7 844 743 |
13. | MLC-04 | 11.166 | 454 601 | 7 844 245 |
14. | MLC-03 | 12.050 | 455 362 | 7 843 808 |
15. | MLC-02 | 12.930 | 456 221 | 7 843 928 |
16. | MLC-01 | 13.811 | 457 079 | 7 844 088 |
17. | AP2 flowline crossing | 14.529 | 457 775 | 7 844 017 |
18. | AP2 umbilical crossing | 14.544 | 457 786 | 7 844 007 |
19. | J-tube bellmouth | 14.587 | 457 814 | 7 843 975 |
2. Under Specifications, the Design and Construction is varied by deleting all the current text and replacing with the following:
Design and Construction
“The offshore pipeline is of flexible construction and as such is designed and constructed
according to the international standard ISO 13628-1, “Design and operation of subsea
production systems – Part 1: General requirements and recommendations”, as is permitted by Clause 2.2 of AS2885 Part 4. The rigid topside piping on the Angel Platform that forms part of the pipeline is designed and constructed according to the Australian standard AS 2885.4.”
3. Under Specifications, the Basis of Design is varied by updating the items in bold and italics:
Item | Item Description | Details |
1 | Inside diameter of pipe and riser | 254 mm (10 inches) |
2 | Wall thickness of flowline and riser section | Light weight (KP 0 to 6.972): 55.2 mm Heavy weight (KP 6.972 to 9.403): 60.8 mm Medium weight and riser (KP 9.403 to riser hang-off): 59.3 mm |
3 | Length | 14.7 km to RESDV |
4 | Design life | 20 years |
5 | Pipeline Construction | Unbonded Flexible Pipe |
6 | Pipeline and Riser Material Grade | Carcass Layer (process wetted): AISI 316L Pressure Sheath (light and heavy weight): TP 37 Pressure Sheath (medium weight and riser): TP 35 Various other steel and polymer materials are applied to complete the flexible cross section. |
7 | Pipeline Specification | Subsea flexible: Unbonded Flexible Pipe to API 17J Topside rigid piping: AS 2885.4 / DNVGL-ST-F101 |
8 | Minimum yield strength of pipe steel | Various steel yield strengths are adopted within the flexible cross section. |
9 | Pipeline System Pressure | MAOP: 19.5 MPa(a) (19.4 MPag) Maximum Design: 31.8 MPa(a) Minimum Design: 0 MPa(a) |
10 | Design Capacity | 180 MMscf/d |
11 | Maximum Design Temperature | 115 ⁰C |
12 | Minimum Design Temperature | -30 ⁰C |
13 | Operating temperature range | Maximum: 115 ⁰C (Inlet condition) Minimum: 21.3 ⁰C (Arrival condition) |
14 | Characteristics of substance proposed to be conveyed | Gas and condensate |
15 | General plans and descriptions of pump stations, tank stations or valve stations and their equipment | A two slot CRA Lambert Deep Manifold is installed immediately upstream of KP 0.0 which is nominated as a terminal station. |
16 | General plans and description of pigging facilities | N/A |
17 | Cathodic Protection | Al-Zn-In sacrificial bracelet anodes Monitoring via ROV or AUV survey |
18 | Hydrate Management | Insulation and MEG injection |
Attachment 1