<h1>Halladale/Black Watch/Speculant Gas Project (Victoria,Australia)</h1>

<p>The Halladale/Black Watch/Speculant Gas Project is an operating natural gas development in south-west Victoria,Australia,operated by Beach Energy. The project taps nearshore gas reservoirs in the Victorian Otway Basin via extended-reach wells drilled from an onshore well site near Nirranda South,eliminating the need for a conventional offshore platform. Raw gas flows through a 33 km buried pipeline to the Otway Gas Plant near Port Campbell for processing,and the processed gas is sold into the East Coast domestic market. The Halladale and Black Watch fields were discovered in 2005,with Speculant discovered in 2014. First gas from Halladale and Speculant was achieved in August 2016,and the Black Watch 1 well was tied into the plant in 2020.</p>

<h2>Quick Facts</h2>

<table>
<tbody>
<tr><th>Item</th><th>Detail</th></tr>
<tr><td>Project Name</td><td>Halladale/Black Watch/Speculant Gas Project</td></tr>
<tr><td>Country</td><td>Australia</td></tr>
<tr><td>Subnational Unit</td><td>Victoria</td></tr>
<tr><td>Fuel Type</td><td>Gas</td></tr>
<tr><td>Production Type</td><td>Conventional gas reservoirs</td></tr>
<tr><td>Status</td><td>Operating</td></tr>
<tr><td>Operator</td><td>Beach Energy</td></tr>
<tr><td>Owner(s)</td><td>Beach Energy Ltd 60%; O.G. Energy Holdings Ltd 40%</td></tr>
<tr><td>Discovery Year</td><td>2005 (Halladale/Black Watch); 2014 (Speculant)</td></tr>
<tr><td>Production Start Year</td><td>2016</td></tr>
<tr><td>Onshore/Offshore</td><td>Nearshore offshore reservoirs accessed from onshore well site</td></tr>
<tr><td>Basin</td><td>Otway Basin</td></tr>
<tr><td>Block(s)</td><td>VIC/L1(V)</td></tr>
</tbody>
</table>

<h2>Location and Basin</h2>

<p>The project is located in the Victorian Otway Basin,with reservoirs about 4–5 km offshore in approximately 40 m of water,accessed by directional drilling from the onshore HBWS well site near Nirranda South,east of Peterborough. The Otway Gas Plant near Port Campbell processes the gas. The area is part of the Otway and Bass basins producing region,which Geoscience Australia notes produced 48 petajoules of gas in 2023.</p>

<h2>Ownership and Operatorship</h2>

<p>Beach Energy operates the project and holds a 60% interest. O.G. Energy Holdings Ltd (through OGOG (Otway) Pty Ltd) holds the remaining 40%. The project was originally developed by Origin Energy,which started production from Halladale and Speculant in 2016. Beach Energy acquired Lattice Energy (Origin’s upstream business) and now operates the field as part of its Victorian Otway Basin portfolio.</p>

<h2>Development History</h2>

<table>
<tbody>
<tr><th>Milestone</th><th>Year</th><th>Details</th></tr>
<tr><td>Discovery</td><td>2005</td><td>Halladale and Black Watch discovered; Speculant discovered in 2014.</td></tr>
<tr><td>First gas</td><td>2016</td><td>Halladale and Speculant began production on 26 August 2016 via extended-reach wells and a buried pipeline to the Otway Gas Plant.</td></tr>
<tr><td>Black Watch tie-in</td><td>2020</td><td>Black Watch 1 well completed on 19 April 2020 and connected to the Otway Gas Plant.</td></tr>
</tbody>
</table>

<p>The development concept used extended-reach drilling from the Nirranda South well site,with directional wells reaching up to approximately 6.5 km from surface to reservoir. No offshore platform was required. The project was phased: Halladale and Speculant first,then Black Watch later added to the same production and processing system.</p>

<h2>Infrastructure and Facilities</h2>

<p>Key infrastructure includes the Halladale 1,Speculant 1,Speculant 2 and Black Watch 1 wells; the onshore HBWS well site; the Halladale Black Watch and Speculant Pipeline (PL006009/PL6009) – a 33 km buried steel pipeline transporting produced fluids; a parallel 33 km buried steel pipeline carrying monoethylene glycol and corrosion inhibitor from the Otway Gas Plant to the well site; and the Otway Gas Plant itself. The plant also processes gas from other Beach Energy Otway Basin fields. There is no dedicated offshore platform,FPSO,LNG train,or subsea manifold for this project.</p>

<h2>Production and Reserves</h2>

<p>Global Energy Monitor reports project-level gas production of 826.88 million m³/yr (2019 data). At start-up in 2016,Origin expected the Halladale/Speculant development to boost Otway Gas Plant output by up to 80 terajoules per day. Current field-by-field production figures are not publicly available. Reserve figures for the individual fields are also not separately disclosed; the project is a producing component of Beach Energy’s broader Victorian Otway Basin portfolio.</p>

<h2>Recent Developments</h2>

<p>The project remains in operation as part of Beach Energy’s Otway Basin Victoria portfolio,with VIC/L1(V) listed as a producing nearshore licence in the company’s 2024 annual report. No major new developments (new FID,new surface facility,or LNG expansion) have been announced for the Halladale/Black Watch/Speculant fields in the last three years. The fields continue to supply gas through the existing Otway Gas Plant infrastructure.</p>

<h2>Sources</h2>

<ul>
<li><a href="https://www.gem.wiki/Halladale/Black_Watch/Speculant_Gas_Project_%28Victoria%2C_Australia%29" rel="nofollow noopener" target="_blank">Global Energy Monitor: Halladale/Black Watch/Speculant Gas Project (Victoria,Australia)</a></li>
<li><a href="https://beachenergy.com.au/vic-otway-basin/" rel="nofollow noopener" target="_blank">Beach Energy: Otway Basin Victoria</a></li>
<li><a href="https://www.beachenergy.com.au/wp-content/uploads/2020/02/Beach-Energy-HBWS-Project-Info-Sheet_February-2020.pdf" rel="nofollow noopener" target="_blank">Beach Energy: Halladale,Black Watch and Speculant Project Update,February 2020</a></li>
<li><a href="https://www.beachenergy.com.au/wp-content/uploads/GD21-0191J-Factsheet-PL006009.pdf" rel="nofollow noopener" target="_blank">Beach Energy: Halladale Black Watch and Speculant Pipeline Fact Sheet</a></li>
<li><a href="https://beachenergy.com.au/wp-content/uploads/BPT_2024_Beach_Energy_Ltd_Annual_Report.pdf" rel="nofollow noopener" target="_blank">Beach Energy: 2024 Annual Report</a></li>
<li><a href="https://info.nopsema.gov.au/environment_plans/548/show_public" rel="nofollow noopener" target="_blank">NOPSEMA: Otway Offshore Operations Environment Plan Public Information</a></li>
<li><a href="https://www.ga.gov.au/scientific-topics/energy/province-sedimentary-basin-geology/petroleum/acreagerelease/petroleum" rel="nofollow noopener" target="_blank">Geoscience Australia: 2025 Offshore Petroleum Exploration Acreage Release</a></li>
<li><a href="https://www.rigzone.com/news/origin_commences_production_from_halladalespeculant_fields_in_otway_basin-30-aug-2016-146396-article/" rel="nofollow noopener" target="_blank">Rigzone: Origin Commences Production from Halladale/Speculant Fields in Otway Basin</a></li>
<li><a href="https://www.offshore-technology.com/news/newsorigin-energy-starts-gas-production-from-australias-halladale-and-speculant-fields-4991859/" rel="nofollow noopener" target="_blank">Offshore Technology: Origin Energy Starts Gas Production from Australia’s Halladale and Speculant Fields</a></li>
<li><a href="https://www.nsenergybusiness.com/projects/otway-gas-project-expansion/" rel="nofollow noopener" target="_blank">NS Energy: Otway Gas Project Expansion</a></li>
<li><a href="https://archives.datapages.com/data/appea-journal/058/058001/pdfs/255.html" rel="nofollow noopener" target="_blank">APPEA Journal: The Halladale-Speculant Fields</a></li>
</ul>

IEPTC reference profile for Halladale/Black Watch/Speculant Gas in Victoria,Australia,covering asset type,location,development status,and upstream industry context.

Halladale/Black Watch/Speculant Gas Project (Victoria,Australia)

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Halladale/Black Watch/Speculant Gas Project (Victoria,Australia)

Halladale/Black Watch/Speculant Gas Project (Victoria,Australia)

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