<h1>J‑Area Oil Project (United Kingdom)</h1>
<h2>Overview</h2>
<p>The J‑Area Oil Project is an operating conventional oil project in the UK Central North Sea. It is a producing hub that includes the Jade,Jasmine,Joanne and Judy fields,with the Talbot field tied back to the Judy platform. Harbour Energy operates the J‑Area hub. Judy serves as the central processing point,with gas transported through the Central Area Transmission System and liquids transported to Teesside through the Norpipe system.</p>
<h2>Quick Facts</h2>
<table>
<tbody>
<tr>
<th>Item</th>
<th>Detail</th>
</tr>
<tr>
<td>Project Name</td>
<td>J‑Area Oil Project</td>
</tr>
<tr>
<td>Country</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>Fuel Type</td>
<td>Oil</td>
</tr>
<tr>
<td>Production Type</td>
<td>Conventional</td>
</tr>
<tr>
<td>Status</td>
<td>Operating</td>
</tr>
<tr>
<td>Status Year</td>
<td>2024</td>
</tr>
<tr>
<td>Operator</td>
<td>Harbour Energy</td>
</tr>
<tr>
<td>Block(s)</td>
<td>030/02c; 030/07a; 030/6a</td>
</tr>
</tbody>
</table>
<h2>Project Overview</h2>
<p>J‑Area is a conventional UK upstream project centered on a cluster of producing fields in the Central North Sea. The project is best understood as a producing hub. Harbour Energy lists J‑Area as an operated asset with 67.0% Harbour equity and identifies associated fields and discoveries including Jasmine,Joanne,Judy,Talbot,Dunnottar,Peach North and Calloway. Harbour separately lists Jade as an operated asset with 67.5% Harbour equity.</p>
<p>The development concept is hub‑based. Judy functions as the central processing point for several J‑Area streams. Jade,Joanne,Jasmine and Talbot export gas and liquids through the Judy platform. Harbour Energy reported that new wells onstream at J‑Area,full‑year contribution from Talbot and strong operating efficiency supported UK production in 2025. Ithaca Energy reported that J‑Area reached more than 20 thousand barrels of oil equivalent per day of average net production in 2025,making it the most significant contributor to the group’s production that year.</p>
<h2>Location and Operating Area</h2>
<p>J‑Area is located in the United Kingdom sector of the Central North Sea. The project is associated with UK offshore blocks 030/02c,030/07a and 030/6a. Judy,Joanne and Jasmine are in Block 30/07a,Jade is in Block 30/02c,and Jasmine is also described as being in Blocks 30/6a and 30/7a. The fields lie in the Central Graben area,which contains high‑pressure,high‑temperature reservoirs.</p>
<h2>Operator and Ownership</h2>
<p>Harbour Energy operates the J‑Area hub. Harbour’s UK asset page lists J‑Area with 67.0% Harbour equity and Jade with 67.5% Harbour equity. Working interests vary by field,discovery,tie‑back or licence. Ithaca Energy also has material production exposure to J‑Area. Ithaca stated in 2026 that average net production from J‑Area in 2025 reached more than 20 thousand barrels of oil equivalent per day,reflecting increased stakes following its Eni UK business combination.</p>
<h2>Development History</h2>
<table>
<tbody>
<tr>
<th>Milestone</th>
<th>Year</th>
<th>Details</th>
</tr>
<tr>
<td>Development milestone</td>
<td>1997</td>
<td>Commercial oil and gas sales from Judy and Joanne began in 1997.</td>
</tr>
<tr>
<td>Recent status milestone</td>
<td>2024</td>
<td>The project was operating,with Talbot tied back to Judy in 2024.</td>
</tr>
</tbody>
</table>
<p>Hydrocarbons were first discovered in the Joanne field in 1980,and development was pursued after geological work in 1992. Judy and Joanne commercial oil and gas production began in 1997,with Judy serving as the main processing platform. Jade and Jasmine later became part of the J‑Area system. Jasmine is a high‑pressure,high‑temperature gas‑condensate field in Blocks 30/6a and 30/7a and began production in 2013. Talbot was tied back to Judy in 2024 as a three‑well subsea tie‑back in Block 30/13e,with production commencing in November 2024.</p>
<h2>Infrastructure and Facilities</h2>
<p>J‑Area is an offshore hub centered on the Judy platform. Talbot,Jade,Joanne and Jasmine export gas and liquids through Judy. After processing,gas is transported through the Central Area Transmission System and liquids to Teesside through the Norpipe system.</p>
<p>Infrastructure includes the Judy platform,the Jasmine wellhead platform with bridge‑linked accommodation,the Jade normally unattended installation,the Joanne subsea manifold and Talbot subsea tie‑back infrastructure. Judy is a central processing and riser platform. Joanne is a subsea tie‑back to Judy. Jade uses a minimum‑facilities wellhead platform tied back to the Judy system. Jasmine is a 24‑slot wellhead platform tied back to Judy by pipeline. The Talbot development includes a subsea manifold,an insulated pipe‑in‑pipe production pipeline,and an electro‑hydraulic and chemical umbilical,located 16 kilometres southeast of the Judy platform.</p>
<h2>Production and Reserves</h2>
<p>Global Energy Monitor listed 137.0 million barrels of oil equivalent of 2P oil and gas condensate reserves for J‑Area in 2020. J‑Area remains a material producing hub. Harbour Energy stated that new wells onstream at J‑Area and the full‑year contribution from Talbot supported UK production in 2025. Ithaca Energy reported that average net production from J‑Area reached more than 20 thousand barrels of oil equivalent per day in 2025,the most significant contributor to Ithaca’s production that year. Commercial oil and gas production from Judy and Joanne began in 1997. Jasmine achieved first production in 2013,and Talbot production commenced in November 2024.</p>
<h2>Recent Developments</h2>
<p>In 2024,Talbot was tied back to Judy,adding new subsea production to the hub. In December 2024,hydrocarbon indications were reported at the Jocelyn South prospect in Block 30/07a,part of the Harbour‑operated J‑Area. In 2025,Ithaca Energy reported that average net production from J‑Area reached more than 20 thousand barrels of oil equivalent per day,its highest average in ten years,attributed to increased stakes after the Eni UK business combination,short‑cycle investments,three new wells,strong Talbot performance and a Joanne well stimulation campaign. Harbour also reported UK production growth in 2025 supported by new wells at J‑Area and the full‑year contribution from Talbot.</p>
<h2>Related Topics</h2>
<ul>
<li>UK Central North Sea oil and gas</li>
<li>J‑Area production hub</li>
<li>Judy platform</li>
<li>Jade field</li>
<li>Jasmine field</li>
<li>Joanne field</li>
<li>Talbot subsea tie‑back</li>
<li>Central Area Transmission System</li>
<li>Norpipe liquids export system</li>
<li>High‑pressure high‑temperature reservoirs</li>
<li>UK Continental Shelf infrastructure</li>
<li>Mature offshore field management</li>
<li>Subsea tie‑back development</li>
<li>North Sea asset integrity</li>
</ul>
<h2>Sources</h2>
<ul>
<li><a href="https://www.gem.wiki/J-Area_Oil_Project_(United_Kingdom)">Global Energy Monitor: J‑Area Oil Project (United Kingdom)</a></li>
<li><a href="https://www.harbourenergy.com/what-we-do/uk/">Harbour Energy: UK Assets and J‑Area</a></li>
<li><a href="https://assets.publishing.service.gov.uk/media/68b9ae7a3f3e5483efdbaa25/Harbour_Energy_Annual_OSPAR_Report_2024.pdf">Harbour Energy Annual Environmental Statement 2024</a></li>
<li><a href="https://www.harbourenergy.com/media/gfypk3ol/icop-judy_joanne-jan-2025-update_final.pdf">Harbour Energy Infrastructure Code of Practice: Judy and Joanne</a></li>
<li><a href="https://www.ithacaenergy.com/press-releases/full-year-2025-results-a-year-of-strong-strategic-and-operational-execution">Ithaca Energy: Full Year 2025 Results</a></li>
<li><a href="https://www.ithacaenergy.com/operations">Ithaca Energy: Operations</a></li>
<li><a href="https://www.offshore-technology.com/projects/jasminefieldnorthsea/">Offshore Technology: Jasmine Gas Field Project,North Sea</a></li>
<li><a href="https://www.woodmac.com/reports/upstream-oil-and-gas-j-area-jade-joanne-judy-jasmine-and-talbot-613306/">Wood Mackenzie: J‑Area,Jade,Joanne,Judy,Jasmine and Talbot Report</a></li>
</ul>

IEPTC reference profile for J - Area Oil in United Kingdom,covering asset type,location,development status,and upstream industry context.

J - Area Oil Project (United Kingdom)

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J - Area Oil Project (United Kingdom)

J - Area Oil Project (United Kingdom)

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