<h1>Greater Western Flank Phase 3 Gas Project (Western Australia,Australia)</h1>
<p>The Greater Western Flank Phase 3 Gas Project (GWF-3) is an offshore gas development in Western Australia,operated by Woodside Energy. It is part of the North West Shelf Project in the Northern Carnarvon Basin. The project was developed as a subsea tie-back to commercialise additional North West Shelf reserves through existing infrastructure,associated with the Goodwyn GH reservoir and often discussed together with the Lambert Deep gas project,which was progressed in the same execution campaign. GWF-3 supports the long-term supply strategy of the North West Shelf Project. Final investment decision for GWF-3,including Lambert Deep,was achieved in January 2020. The GWF-3 wells started up in May 2022,and Lambert Deep achieved ready-for-start-up in July 2022.</p>
<h2>Quick Facts</h2>
<table>
<colgroup><col/><col/></colgroup>
<tbody>
<tr><th>Item</th><th>Detail</th></tr>
<tr><td>Project Name</td><td>Greater Western Flank Phase 3 Gas Project</td></tr>
<tr><td>Country</td><td>Australia</td></tr>
<tr><td>Subnational Unit</td><td>Western Australia</td></tr>
<tr><td>Fuel Type</td><td>Gas</td></tr>
<tr><td>Status</td><td>Operating</td></tr>
<tr><td>Operator</td><td>Woodside Energy</td></tr>
<tr><td>Owner(s)</td><td>Other; BP PLC; Woodside Energy Ltd; Chevron Corp; BHP Billiton</td></tr>
<tr><td>Parent Company</td><td>BHP Billiton; BP PLC; Chevron Corp; Other; Woodside Energy Group Ltd</td></tr>
<tr><td>Onshore/Offshore</td><td>Offshore</td></tr>
<tr><td>Basin</td><td>Northern Carnarvon</td></tr>
<tr><td>FID Year</td><td>2020</td></tr>
<tr><td>Production Start Year</td><td>2022</td></tr>
</tbody>
</table>
<h2>Project Overview</h2>
<p>Greater Western Flank Phase 3 is an upstream backfill development connected into the established North West Shelf infrastructure system. The project is not a standalone LNG facility,fixed platform or independent processing plant. It was designed to produce hydrocarbons from the Goodwyn GH reservoir using subsea wells tied back to existing subsea infrastructure and host facilities. The project is operated by Woodside Energy on behalf of the North West Shelf participants. Woodside consultation material for GWF-3 and Lambert Deep identified four production wells: three GWF-3 wells and one Lambert Deep well. The wells were tied back using subsea Christmas trees,flexible flowlines,production manifolds and service umbilicals. Modifications to topside infrastructure aboard the Angel platform supported the Lambert Deep portion of the campaign.</p>
<h2>Location and Basin</h2>
<p>Greater Western Flank Phase 3 is located offshore Western Australia in the Northern Carnarvon Basin,in Commonwealth waters within permit areas WA-5-L,WA-16-L and WA-3-L. The activity area is approximately 126 kilometres north-west of Dampier. Water depth for GWF-3 is around 125 metres; Lambert Deep water depths range from approximately 80 metres to 130 metres. The project is within the North West Shelf production system,near Goodwyn Alpha and Angel platforms.</p>
<h2>Operator and Ownership</h2>
<p>Woodside Energy operates the project. The relevant permit areas are held by Woodside as operator and other participants of the North West Shelf Project: BHP Billiton Petroleum,BP Developments Australia,Chevron Australia,Japan Australia LNG (MIMI),Shell Australia and China National Offshore Oil Corporation. Project-level information identifies the ownership grouping as including BP PLC,Woodside Energy Ltd,Chevron Corp,BHP Billiton and other participants.</p>
<h2>Development History</h2>
<p>GWF-3 followed earlier Greater Western Flank phases (GWF-1 and GWF-2) that demonstrated the subsea tie-back development model. Woodside’s stakeholder consultation sheet from December 2019 described the planned drilling and subsea installation programme. Final investment decision was achieved in January 2020. Execution commenced in the first half of 2020. The four-well development drilling campaign was completed in January 2022,and the subsea installation programme commenced. GWF-3 achieved ready-for-start-up in April 2022. The subsea installation programme was completed,GWF-3 wells started up in May 2022,and Lambert Deep achieved ready-for-start-up in July 2022. Woodside approved Greater Western Flank Phase 4 in 2025,continuing the subsea tie-back strategy for the North West Shelf.</p>
<table>
<colgroup><col/><col/><col/></colgroup>
<tbody>
<tr><th>Milestone</th><th>Year</th><th>Details</th></tr>
<tr><td>Development milestone</td><td>2020</td><td>Final investment decision achieved in January 2020 for GWF-3,including Lambert Deep.</td></tr>
<tr><td>Production milestone</td><td>2022</td><td>GWF-3 wells started up in May 2022; Lambert Deep ready-for-start-up in July 2022.</td></tr>
<tr><td>Recent status milestone</td><td>2025</td><td>Woodside approved Greater Western Flank Phase 4,confirming continued investment in the broader North West Shelf subsea tie-back strategy.</td></tr>
</tbody>
</table>
<h2>Infrastructure and Facilities</h2>
<p>The project includes subsea production wells,subsea Christmas trees,flexible flowlines,production manifolds,service umbilicals and connections to existing subsea and host infrastructure. The GWF-3 development was designed to produce from the Goodwyn GH reservoir; Lambert Deep produces from the Lambert Deep field. Goodwyn Alpha is a key host facility,and NOPSEMA information states that the Goodwyn Alpha environment plan was resubmitted to account for integration of planned GWF-3 production. Vessels required for the campaign included a semi-submersible mobile offshore drilling unit,subsea installation vessel,light well intervention vessel and support vessels. Angel topside modifications were planned over approximately 15 months from early 2021 to mid‑2022.</p>
<h2>Production and Reserves</h2>
<p>GWF-3 is an operating gas project with first production in May 2022. Global Energy Monitor reports gas reserves of 11,326.8 million cubic metres. NS Energy describes the project as targeting estimated recoverable gas reserves of about 400 billion cubic feet. Production is integrated into the North West Shelf and Goodwyn Alpha system; project-specific production rates are not reported separately.</p>
<h2>Recent Developments</h2>
<p>Recent public updates specific to GWF-3 are limited since the project moved into operations. The broader North West Shelf system has seen the approval of Greater Western Flank Phase 4 (GWF‑4),a subsea tie-back expected to extend production by around one year with start‑up targeted for 2028. Western Australia granted environmental approval for the North West Shelf extension in December 2024,and the Australian federal government approved the extension in May 2025. These approvals relate to the larger LNG and gas‑processing system that GWF‑3 depends on.</p>
<h2>Related Topics</h2>
<ul>
<li>North West Shelf Project</li>
<li>Goodwyn Alpha platform</li>
<li>Angel platform</li>
<li>Karratha Gas Plant</li>
<li>Greater Western Flank developments</li>
<li>Lambert Deep gas project</li>
<li>Goodwyn GH reservoir</li>
<li>Northern Carnarvon Basin</li>
<li>Woodside Energy offshore Australia operations</li>
<li>Subsea gas tie-back developments</li>
<li>North West Shelf backfill gas</li>
<li>Offshore pipeline and umbilical integrity</li>
<li>NOPSEMA environment plans</li>
<li>Brownfield offshore modifications</li>
</ul>
<h2>Sources</h2>
<ul>
<li><a href="https://www.gem.wiki/Greater_Western_Flank_Phase_3_Gas_Project_%28Western_Australia%2C_Australia%29" rel="nofollow noopener" target="_blank">Global Energy Monitor: Greater Western Flank Phase 3 Gas Project (Western Australia,Australia)</a></li>
<li><a href="https://www.woodside.com/what-we-do/operations/north-west-shelf" rel="nofollow noopener" target="_blank">Woodside Energy: North West Shelf Project</a></li>
<li><a href="https://www.woodside.com/docs/default-source/current-consultation-activities/australian-activties/greater-western-flank-phase-3-and-lambert-deep-drilling-and-subsea-installation-information-sheet.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Greater Western Flank Phase 3 and Lambert Deep Drilling and Subsea Installation Information Sheet</a></li>
<li><a href="https://www.woodside.com/docs/default-source/current-consultation-activities/australian-activties/woodside-consultation-information-sheet-gwa-and-angel-operations.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: GWA and Angel Operations Environment Plans Consultation Information Sheet</a></li>
<li><a href="https://info.nopsema.gov.au/environment_plans/546/show_public" rel="nofollow noopener" target="_blank">NOPSEMA: Goodwyn Alpha Facility Operations Environment Plan Public Information</a></li>
<li><a href="https://www.nsenergybusiness.com/projects/the-greater-western-flank-phase-3-and-lambert-deep-gas-project/" rel="nofollow noopener" target="_blank">NS Energy: Greater Western Flank Phase 3 and Lambert Deep Gas Project</a></li>
<li><a href="https://www.woodside.com/docs/default-source/news-and-media-documents/publications/company-brochure-may-2021.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Company Brochure May 2021</a></li>
<li><a href="https://www.asx.com.au/asxpdf/20200813/pdf/44lg6ns0kvnsrg.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Half-Year 2020 Report</a></li>
<li><a href="https://www.sec.gov/Archives/edgar/data/811809/000119312522120550/d559567d425.htm" rel="nofollow noopener" target="_blank">Woodside Energy: First Quarter 2022 Report</a></li>
<li><a href="https://cdn-api.markitdigital.com/apiman-gateway/ASX/asx-research/1.0/file/2924-02543976-6A1100481?access_token=83ff96335c2d45a094df02a206a39ff4" rel="nofollow noopener" target="_blank">Woodside Energy: Second Quarter 2022 Report</a></li>
<li><a href="https://www.woodside.com/docs/default-source/investor-documents/quarterly-and-half-yearly-pdfs-and-data-tables/2025/004-fourth-quarter-2025-report.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Fourth Quarter 2025 Report</a></li>
<li><a href="https://www.reuters.com/business/energy/woodside-energy-gets-state-environmental-approval-extend-north-west-shelf-until-2024-12-12/" rel="nofollow noopener" target="_blank">Reuters: Western Australia Approval for North West Shelf Project Extension</a></li>
<li><a href="https://www.reuters.com/business/energy/australia-approves-woodsides-north-west-shelf-lng-project-extension-2025-05-28/" rel="nofollow noopener" target="_blank">Reuters: Australia Approves North West Shelf LNG Project Extension</a></li>
<li><a href="https://www.reuters.com/business/world-at-work/australian-maintenance-workers-strike-woodsides-north-west-shelf-lng-plant-2026-05-20/" rel="nofollow noopener" target="_blank">Reuters: Maintenance Workers Strike at Woodside North West Shelf LNG Plant</a></li>
<li><a href="https://www.offshore-energy.biz/woodside-makes-plans-for-well-intervention-ops-off-australia/" rel="nofollow noopener" target="_blank">Offshore Energy: Woodside Plans Well Intervention Operations Offshore Australia</a></li>
</ul>

IEPTC reference profile for Greater Western Flank Phase 3 Gas in Western Australia,Australia,covering asset type,location,development status,and upstream industry context.

Greater Western Flank Phase 3 Gas Project (Western Australia,Australia)

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Greater Western Flank Phase 3 Gas Project (Western Australia,Australia)

Greater Western Flank Phase 3 Gas Project (Western Australia,Australia)

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