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Administered by: Industry, Innovation and Science
Published Date 05 Oct 2018

 

COMMONWEALTH OF AUSTRALIA

 

Sections 226 and 708

Offshore Petroleum and Greenhouse Gas Storage Act 2006

 

APPLICATION FOR VARIATION OF A PIPELINE LICENCE

 

I, STEVEN ROBERT TAYLOR, Delegate of the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Victoria 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

 

Esso Australia Resources Pty Ltd

(ABN 62 091 829 819)

 

BHP Billiton Petroleum (Bass Strait) Pty. Ltd.

(ABN 29 004 228 004)

 

 for the variation of Pipeline Licence VIC/PL1 in the offshore area of Victoria, 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–VICTORIA

OFFSHORE PETROLEUM JOINT AUTHORITY

 

 


 

APPLICATION FOR VARIATION OF

PIPELINE LICENCE VIC/PL1

 

The application seeks to effect the following amendments to the licence associated with the development of the West Barracouta Field, which will be tied into the existing Barracouta to Shore gas pipeline via a new 5.6 km section of 12” flexible pipeline as part of a system of pipes. The following information has been provided by the applicant and will be subject to assessment.

Route of the Pipeline

 

1.        Update the current Barracouta to Shore Steel Pipeline route description such that the pipeline commences at the Barracouta Last Valve Off (see Barracouta to Shore Pipeline Coordinates below).

 

2.        Insert the route description for the West Barracouta Flexible Pipeline (see West Barracouta Flexible Pipeline Coordinates below).

3.        Add a route map of the West Barracouta Flexible Pipeline (see Appendix A).

 

West Barracouta Flexible Pipeline Specifications

 

4.        Insert the pipeline design details and parameters for the West Barracouta Flexible Pipeline.

 

Barracouta to Shore Steel Pipeline Coordinates

 

The route of the pipeline is described in the table below and displayed in the map below commencing at the Barracouta Last Valve Off, located below the pig launcher on the platform and proceeding in a straight line, with some minor deflections towards a point which intersects the boundary of Commonwealth offshore waters at the 3 nautical mile limit at or about Easting 543223 m and Northing 5770767 m. Coordinates are based on Geodetic Datum of Australia (GDA94).

 

ID

DESCRIPTION

EASTING

NORTHING

0

Last Valve Off at Barracouta Platform

558974

5760899

1

Barracouta Platform

558974

5760899

2

Deflection point

559097

5761057

C1

Crossing at VIC/SL7 (TWA65)

559102

5761058

C2

Crossing at VIC/PL23 (TWA200)

559094

5761058

3

Deflection point

559070

5761068

4

Deflection point

558832

5761132

5

Deflection point

555961

5762952

6

Deflection point

553792

5764203

7

Deflection point

547797

5767982

8

Deflection point

544640

5769898

9

Deflection point

544275

5770058

10

3 Nautical Mile Point

543223

5770767

Coordinates set above is based on GDA94 / MGA Zone 55, survey of pipeline centreline.

 

 

West Barracouta Flexible Pipeline Coordinates

 

The flexible pipeline route is described in the table below and displayed on the attached map, and lies within a 20 m corridor centred on the pipeline route, subject to installation tolerances, commencing at the West Barracouta Flowline End Manifold and terminating at the Barracouta Pipeline Hot-Tap location on the steel pipeline, located within the 500 m petroleum safety zone of the Barracouta platform. Coordinates are based on Geodetic Datum of Australia (GDA94).

 

ID

Description

EASTING

NORTHING

0

Flowline End Manifold

553,822.30

5,758,786.90

1

Deflection point

554,008.41

5,758,974.96

2

Deflection point

558,671.08

5,761,257.54

3

Deflection point

558,746.01

5,761,211.15

4

Hot tap location

558,751.27

5,761,219.65

 

West Barracouta Flexible Pipeline Specifications

 

Item

Item Description

Details

1

Outside diameter of pipe

400 mm (approximate)

3

Length

5.6 km (approximate)

4

Design life

15 years (approximate)

5

Pipeline Material and Grade

DN300 flexible pipeline will comply with API 17B Recommended Practice for Flexible Pipe and API 17J Specification for Unbonded Flexible Pipe

8

Protective Coating

DN300 flexible pipeline will be protected by an external polyethylene sheath and constructed with corrosion resistant alloys

9

Internal design pressure

18.96 MPaa (2,750 psia)

10

Maximum Allowable Operating Pressure

12.514 MPaa (1,815 psia)

12

Design Capacity

3.7 Mm3/d (130 MMscf/d)

13

Maximum Operating Temperature

70°C

14

Maximum Design Temperature

80°C

15

Minimum Design Temperature

-18°C

16

Characteristics of substance proposed to be conveyed

Wet gas and condensate hydrocarbon liquids

17

General plans and descriptions of pump stations, tank stations or valve stations and their equipment

Flowline end manifold

18

General plans and description of pigging facilities

None provided

19

Valves and Fittings

All valves and fittings will be in accordance with the appropriate American Petroleum Institute Specification or American National Standards Institute Specification, with Class 1500 rating for fittings.

20

Connection to Pipeline

The FLEM and Skid that connect to the flexible pipeline are designed in accordance with ASME B31.8.

21

Cathodic Protection

Anode bracelets will be provided at each end of the flexible pipeline sections.

22

Crossings

No crossings

 


Appendix A – West Barracouta Flexible Pipeline Route Map

 

Title: West Barracouta Flexible Pipeline Route - Description: Map showing route of West Barracouta flexible pipeline.