e n e r g y t h a t ’s A u s t r a l i a n

BackgroundWoodside is submitting a revision of the North West Shelf (NWS) Project’s Goodwyn Alpha (A) Platform Operations Environment Plan to the regulator in accordance with the Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009.

Goodwyn A is an offshore production platform in Commonwealth waters about 135 km north-west of Karratha in Western Australia and has been operating since 1995. The facility’s current Environment Plan was approved in 2007.

The Environment Plan is required to be revised every five years. The Goodwyn A platform is situated in Production Licence (PL) WA-5-L which is held by Woodside (Operator) and other participants of the NWS Project; BHP Billiton Petroleum, BP Developments Australia, Chevron Australia, Japan Australia LNG (MIMI), Shell Development (Australia), and China National Offshore Oil Corporation (CNOOC) (CNOOC does not hold an interest in NWS Project infrastructure).

Goodwyn Alpha PlatformProduction Facility

Fact Sheet

Western AustraliaBarrow Is.

Montebello Is.

Okha FPSO

North RankinComplex

Pluto Platform

Angel Platform

Goodwyn 'A'Platform

MEG Line TL1 Export Pipeline

TL2 Export Pipeline

Pluto Trunkline

WA-5-L

Dampier

Karratha

King Bay

117°0'E

117°0'E

116°0'E

116°0'E

115°0'E

115°0'E

19°30'S 19°30'S

20°0'S 20°0'S

20°30'S 20°30'S

Location Map

WesternAustralia

Datum: GDA 1994Note : Scale is approx. only

0 50

kilometres

Montebello/Barrow IslandsMarine Conservation Reserves

General use zone

Multiple use area

Recreation zone

Sanctuary zoneSpecial purpose zone(benthic protection)Special purpose zone(pearling)

Legend

Offshore Facilities

Pipeline

NWS Project Lease Area

OperationsGoodwyn A is an offshore production platform that produces dry gas and condensate from the Goodwyn, Perseus and Searipple area reservoirs. Gas and condensate from these reservoirs is transported via a network of pipelines to Goodwyn A and then on-shore to the Karratha Gas Plant for processing.

The Goodwyn A is more than 290 metres tall and stands in a water depth of 131 metres. The platform combines production, re-injection, utilities and accommodation facilities. The 55,000 tonne production facility is secured to the seabed by 36 piles, which allow the structure to support its operating load and withstand cyclone conditions.

Goodwyn A is designed for up to 30 production wells, including five re-injection wells, and has a daily production capacity of up to 36,000 tonnes of gas and 11,000 tonnes of condensate.

Goodwyn A is marked on nautical maps surrounded by a five nautical mile exclusion zone to shipping.

ActivitiesActivities undertaken at Goodwyn A include:

Production and maintenanceProduction and maintenance involves receiving hydrocarbons from the reservoirs, processing and exporting to the Karratha Gas Plant via two subsea trunklines. Inspection, maintenance and repairs are conducted to maintain safe and reliable production within the platform design constraints.

Production and well maintenanceMaintenance of production wells may be required to safeguard well integrity. This activity involves well workovers or interventions concurrent with production. The platform-based workovers are typically performed utilising a Hydraulic Workover Unit (HWU) and involve the use of chemicals selected in accordance with Woodside’s Chemical Assessment Procedure. The HWU must comply with applicable industry design and construction codes and standards.

Production and major projects Major projects involve the implementation of major changes to the facility to accommodate additional infrastructure. Topside modification work to integrate the Greater Western Flank Phase-1 Project is the only major project work currently planned for Goodwyn A. The topside modifications will be managed in accordance with the existing management and mitigation measures in the Environment Plan. Drilling and subsea installation activities related to this project will be the subject of a separate Environment Plan.

Temporary remote operationTemporary remote operation of the production facilities may be required in the event of de-manning the platform for severe cyclones. In this mode of operation production is controlled from a remote operating station located onshore at the Karratha Gas Plant. Remote operation will be undertaken in accordance with the Goodwyn A Emergency Response Plan and the management and mitigation measures in the Goodwyn A Environment Plan.

Goodwyn A platform and offshore infrastructure

Woodside Energy 240 St Georges Terrace, Perth WA 6000 Australiat: +61 8 9348 4000 | f: +61 8 9214 2777 | e: companyinfo@woodside.com.au

Environment managementThe Goodwyn A Environment Plan details the environmental risks and a range of mitigation and management measures to reduce and manage environmental impacts and potential risks to acceptable levels.

Key commitments in the Environment Plan include:

• All routine marine discharges (produced formation water, cooling water and sewage/grey water) will meet legal requirements and be managed according to Woodside’s Environmental Performance Standards;

• Gas flaring will be managed to a level required for safe and reliable production. Unplanned flaring will be minimised where possible and managed in accordance with annual performance targets;

• Procedures to keep emissions from combustion of fuel (e.g. power generation) in line with design specifications will be followed. Fuel gas is the preferred source of fuel. Emissions will be reported in accordance with Regulatory requirements;

• Procedures to reduce the potential for uncontrolled hydrocarbon releases will be followed;

• Appropriate refuelling procedures and equipment will be used to prevent spills to the marine environment;

• Appropriate spill response plans, equipment and materials will be in place and maintained to manage any potential spills to the environment;

• Chemical use will be managed in accordance with Woodside’s Chemical Selection and Approval Procedure;

• Waste generated on the facility will be managed in accordance with Woodside’s Waste Management Plan. Except for putrescibles (food scraps, sewage etc), all wastes will be transported onshore for appropriate recycling or disposal by a licensed waste contractor;

• Measures will be taken to protect marine fauna from vessel and helicopter activities; and

• All vessels will be assessed and managed as appropriate to prevent the introduction of invasive marine species.

ApprovalsThe activities outlined in this Fact Sheet will be conducted under the revised Goodwyn A Environment Plan, which will be submitted to the National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) for assessment and acceptance under the Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2009.

Note: Woodside will communicate any material changes to activities outlined in this consultation Fact Sheet to relevant stakeholders as they arise.

Facility detailsLocation 135 km north-

west of Karratha, Western Australia

Facility type Fixed platformNo. of wells 19 currently, 30

maximumProduction capacity 36,000 tonnes of gas

11,000 tonnes of condensate

Commissioned 1995Water depth 131 mCoordinates Latitude 19º 39’

12” SouthLongitude 115º 55’ 42” East

Feedback and further informationWoodside seeks feedback on its business activities. If you would like to comment on the proposed activity outlined in this fact sheet or would like further information, please contact:

Andrew Decet Corporate Affairs Adviser North West Shelf Project

T: 1800 661233E: andrew.decet@woodside.com.au

Please be advised stakeholder feedback will be communicated to NOPSEMA as required under legislation.

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