<h1>Greater Western Flank Phase 1 Oil and Gas Project (Western Australia,Australia)</h1>

<p>Greater Western Flank Phase 1 (GWF-1) is an offshore oil and gas project in Western Australia,operated by Woodside Energy. It is part of the North West Shelf production system and was developed to recover gas and condensate from the Tidepole and Goodwyn GH fields through subsea wells tied back to the existing Goodwyn Alpha platform. Production began in December 2015,supporting continued gas and condensate supply to the Karratha Gas Plant and the broader North West Shelf Project.</p>

<p>The project is located offshore north-western Australia in Commonwealth waters,approximately 130 to 140 kilometres from Dampier and Karratha,in the North West Shelf area.</p>

<h2>Quick Facts</h2>
<table>
<thead>
<tr><th>Item</th><th>Detail</th></tr>
</thead>
<tbody>
<tr><td>Project Name</td><td>Greater Western Flank Phase 1 Oil and 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>Oil and 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 33%; BP Developments Australia Pty Ltd 16%; Chevron Australia Pty Ltd 16%; BHP Billiton Petroleum 16%; Woodside Energy Ltd 16%</td></tr>
<tr><td>Parent Company</td><td>Other 33.3%; BHP Group Ltd 16.7%; BP PLC 16.7%; Chevron Corp 16.7%; Woodside Energy Group Ltd 16.7%</td></tr>
<tr><td>Production Start Year</td><td>2015</td></tr>
<tr><td>Onshore/Offshore</td><td>Offshore</td></tr>
</tbody>
</table>

<h2>Location</h2>
<p>Greater Western Flank Phase 1 is located offshore Western Australia in Commonwealth waters on the North West Shelf. NOPSEMA environment plan material places the project in Production Licence WA-5-L. The Tidepole field is approximately 15 kilometres south-south-west of the Goodwyn Alpha facility in about 112 metres water depth,while the Goodwyn GH field is approximately 7 kilometres south-south-west of Goodwyn Alpha in about 120 metres water depth. Goodwyn Alpha is located approximately 130 kilometres north-west of Dampier in about 131 metres of water.</p>

<h2>Operator and Ownership</h2>
<p>The project is operated by Woodside Energy on behalf of the North West Shelf participants. Ownership includes Woodside Energy Ltd,BP Developments Australia Pty Ltd,Chevron Australia Pty Ltd,BHP Billiton Petroleum,and other participants. Parent companies include Woodside Energy Group Ltd,BP PLC,Chevron Corp,BHP Group Ltd,and others.</p>

<h2>Development History</h2>
<table>
<thead>
<tr><th>Milestone</th><th>Year</th><th>Details</th></tr>
</thead>
<tbody>
<tr><td>Development milestone</td><td>2011</td><td>GWF-1 received approval in 2011 for development of the Goodwyn GH and Tidepole fields through a subsea tie-back to Goodwyn Alpha.</td></tr>
<tr><td>Production milestone</td><td>2015</td><td>Woodside reported that Greater Western Flank Phase 1 commenced production in December 2015.</td></tr>
<tr><td>Recent status milestone</td><td>2026</td><td>Woodside approved Greater Western Flank Phase 4,continuing investment in the same Goodwyn Alpha and North West Shelf backfill strategy.</td></tr>
</tbody>
</table>

<p>By late 2014,Woodside reported that the A$2.5 billion project had completed its subsea installation program and was on budget and on schedule for start-up in early 2016. Production began in December 2015,ahead of the target. Later phases (Phase 2,3,4) followed a similar subsea tie-back model.</p>

<h2>Infrastructure</h2>
<p>GWF-1 includes five subsea production wells (three in Tidepole,two in Goodwyn GH),subsea manifolds,and a 16-inch corrosion-resistant alloy clad subsea pipeline to Goodwyn Alpha. Goodwyn Alpha is an offshore production platform in Production Licence WA-5-L,approximately 138 kilometres north-west of Dampier. It receives production from multiple reservoirs and sends gas and condensate onshore to the Karratha Gas Plant. No FPSO,FLNG,or new standalone platform was built for GWF-1; it is a subsea tie-back to existing infrastructure.</p>

<h2>Production</h2>
<p>Production began in December 2015 as part of the North West Shelf Project's effort to maintain output from the Karratha Gas Plant. Field-specific current production figures are not separately reported; output is integrated into the Goodwyn Alpha and North West Shelf system. Some sources describe the development targeting roughly 1.1 trillion cubic feet of gas from the Goodwyn GH and Tidepole fields.</p>

<h2>Recent Developments</h2>
<p>Recent activity focuses on the broader Greater Western Flank area. In 2026,Woodside described Greater Western Flank Phase 4 as a drilling and subsea installation program to fill unused capacity at Goodwyn Alpha. Woodside approved Phase 4 in the fourth quarter of 2025,with start-up targeted for 2028. No major redevelopment specifically for Phase 1 has been announced.</p>

<h2>Related Topics</h2>
<ul>
<li>North West Shelf Project</li>
<li>Goodwyn Alpha platform</li>
<li>Karratha Gas Plant</li>
<li>Greater Western Flank Phase 2,Phase 3,Phase 4</li>
<li>Tidepole field</li>
<li>Goodwyn GH field</li>
<li>Subsea gas and condensate tie-backs</li>
<li>Woodside Energy offshore Australia operations</li>
</ul>

<h2>Sources</h2>
<ul>
<li><a href="https://www.gem.wiki/Greater_Western_Flank_Phase_1_Oil_and_Gas_Project_%28Western_Australia%2C_Australia%29" rel="nofollow noopener" target="_blank">Global Energy Monitor: Greater Western Flank Phase 1 Oil and 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/investor-documents/major-reports-%28static-pdfs%29/17-02-2016-2015-annual-report.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: 2015 Annual Report</a></li>
<li><a href="https://www.woodside.com/docs/default-source/investor-documents/quarterly-and-half-yearly-pdfs-and-data-tables/2015/21-01-2016-fourth-quarter-2015-report.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Fourth Quarter 2015 Report</a></li>
<li><a href="https://docs.nopsema.gov.au/A285747" rel="nofollow noopener" target="_blank">NOPSEMA: Greater Western Flank Phase 1 Project Pipeline Installation Environment Plan Summary</a></li>
<li><a href="https://www.woodside.com/docs/default-source/current-consultation-activities/australian-activties/goodwyn-alpha-facility-operations-environment-plan-carnarvon-basin-north-west-wa.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Goodwyn Alpha Facility Operations Environment Plan Consultation 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.woodside.com/docs/default-source/current-consultation-activities/australian-activties/2026/consultation-information-sheet---gwf-4-drilling-and-subsea-installation-ep---january-2026.pdf" rel="nofollow noopener" target="_blank">Woodside Energy: Greater Western Flank Phase 4 Drilling and Subsea Installation Environment Plan Consultation Information Sheet</a></li>
<li><a href="https://www.businesswire.com/news/home/20260127659020/en/Woodside-Energy-Releases-Fourth-Quarter-Report-for-Period-Ended-31-December-2025" rel="nofollow noopener" target="_blank">Woodside Energy: Fourth Quarter 2025 Report</a></li>
<li><a href="https://www.offshore-technology.com/projects/greater-western-flank-australia/" rel="nofollow noopener" target="_blank">Offshore Technology: Greater Western Flank Phase I,North West Shelf</a></li>
<li><a href="https://www.oedigital.com/news/450686-woodside-approves-greater-western-flank-off-australia" rel="nofollow noopener" target="_blank">Offshore Engineer: Woodside Approves Greater Western Flank Off Australia</a></li>
</ul>

IEPTC reference profile for Greater Western Flank Phase 1 Oil and Gas in Western Australia,Australia,covering asset type,location,development status,and upstream industry context.

Greater Western Flank Phase 1 Oil and Gas Project (Western Australia,Australia)

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Greater Western Flank Phase 1 Oil and Gas Project (Western Australia,Australia)

Greater Western Flank Phase 1 Oil and Gas Project (Western Australia,Australia)

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