COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
APPLICATION FOR VARIATION OF A PIPELINE LICENCE WA-30-PL
(SPARTAN TO JOHN BROOKES PIPELINE)
I, GRAEME ALBERT WATERS, 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
Santos WA Southwest Pty Limited
(ACN 050 611 688)
Santos (BOL) Pty Ltd
(ACN 000 670 575)
for the variation of Pipeline Licence WA-30-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.
GRAEME ALBERT WATERS
TITLES ADMINISTRATOR
ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA
OFFSHORE PETROLEUM JOINT AUTHORITY
APPLICATION FOR VARIATION OF
PIPELINE LICENCE WA-30-PL
The application seeks to effect the following amendments to the licence:
- The ROUTE OF THE PIPELINE is varied by deleting all the current text and replacing with the following:
“The pipeline route is described in the table hereunder and displayed in the attached map (Attachment A), commencing at the diverless connector on the gooseneck assembly downstream of the Spartan XT hub to the upstream flange on end of flexible at interface to topside shut down flange on the John Brookes Platform.
Feature ID | Feature Name | KP | Easting (mE) | Northing (mN) | Bend Radius |
1 | Diverless connector on the gooseneck assembly downstream of the Spartan XT hub |
| 317 286.15 | 7 728 372.41 |
|
2 | TP1A | 0.120 | 317 166.15 | 7 728 372.41 |
|
3 | IP1 |
| 317 135.72 | 7 728 372.41 | 150 |
4 | TP1B | 0.180 | 317 107.69 | 7 728 360.55 |
|
5 | IP2 |
| 316 648.23 | 7 728 166.13 | 150 |
6 | TP1C | 0.564 | 316 924.29 | 7 728 581.69 |
|
7 | IP3 |
| 316 991.83 | 7 728 683.36 | 150 |
8 | TP1D | 0.769 | 316 906.01 | 7 728 770.16 |
|
9 | TP2A | 1.010 | 316 736.55 | 7 728 941.55 |
|
10 | IP4 |
| 316 680.18 | 7 728 998.56 | 150 |
11 | TP2B | 1.157 | 316 601.47 | 7 728 983.39 |
|
12 | IP5 |
| 316 303.18 | 7 728 925.88 | 203 |
13 | TB2C | 1.555 | 316 364.18 | 7 729 223.48 |
|
14 | IP6 |
| 316 380.27 | 7 729 302.01 | 150 |
15 | TP2D | 1.703 | 316 323.92 | 7 729 359.04 |
|
16 | TP3A | 4.418 | 314 605.87 | 7 731 093.11 |
|
17 | IP7 |
| 314 525.90 | 7 731 173.83 | 1000 |
18 | TP3B | 4.374 | 314 430.15 | 7 731 234.44 |
|
19 | TP4A | 14.137 | 306 186.38 | 7 736 453.01 |
|
20 | IP8 |
| 306 010.15 | 7 736 564.57 | 1130 |
21 | TP4B | 14.550 | 305 885.36 | 7 736 731.68 |
|
22 | TP5A | 15.241 | 305 472.80 | 7 737 284.16 |
|
23 | IP9 |
| 305 186.66 | 7 737 667.36 | 1200 |
24 | TP5B | 16.152 | 304 715.38 | 7 737 748.69 |
|
25 | Upstream flange on end of flexible at interface to topside shut down flange on the John Brookes Platform | 17.0 | 303 895.34 | 7 737 890.25 |
|
Coordinates are based on the GDA94 Geodetic datum, MGA Zone 50
SPECIFICATIONS
2. The Schedule under Specifications, the Basis of Design table is varied by updating the items in bold and italics:
Basis of Design
The pipeline design is based on the following parameters:
Item | Item Description | Details | ||||||||||||
1 | Outside diameter of pipe and riser
| XT Connector (Gooseneck Pipe): 7.38” (187.5 mm) HOT Section: 263.92 mm MID/COLD Sections: 264.51 mm | ||||||||||||
2 | Wall thickness of pipe inclusive of riser (only for carbon steel) | XT Connector: Gooseneck Pipe 1” (25.4 mm) Internal Cladding Inconel 625, 0.125” (3.2 mm) min thickness HOT Section: 30.36 mm MID/COLD Sections: 30.66 mm | ||||||||||||
3 | Length | 16.7 km (approximate) | ||||||||||||
4 | Design life | 20 years (approximate) | ||||||||||||
5 | Pipeline Material | Flexible steel | ||||||||||||
6 | Pipeline and Riser Steel Grade | XT Connector – Gooseneck Pipe: Steel API 5L X70 HOT/MID/COLD Section Carcass Material: Duplex Stainless Steel | ||||||||||||
7 | Pipeline Specification
| XT Connector – Gooseneck Pipe: API 5L X70 HOT/MID/COLD Sections: Duplex Stainless Steel carcass | ||||||||||||
8 | Minimum yield strength of pipe steel | XT Connector – Gooseneck Pipe: 70 ksi HOT/MID/COLD Section: N/A | ||||||||||||
9 | Maximum Allowable Operating Pressure | 22.5 MPa | ||||||||||||
10 | Design Capacity | 118 MMscf/d | ||||||||||||
11 | Minimum/ Maximum Design Temperature |
| ||||||||||||
12 | Operating Temperature | Maximum: 115 °C Minimum: 0 °C | ||||||||||||
13 | Characteristics of substance proposed to be conveyed | The production fluid is a combination of gas, condensate and water. | ||||||||||||
13 | General plans and descriptions of pump stations, tank stations or valve stations and their equipment | N/A | ||||||||||||
14 | General plans and description of pigging facilities | N/A | ||||||||||||
15 | Cathodic protection | Cathodic protection at XT Connector provided by XT. Bracelet anodes at each midline connection and end connections. | ||||||||||||
16 | Stabilisation | Concrete stabilisation mattresses |
3. The WA-30-PL Pipeline Route Map at Annexure A is deleted and replaced with the map at Attachment 1.
Attachment 1