<h1>Assa North - Ohaji South Oil and Gas Project,Nigeria</h1>
<p>Assa North-Ohaji South is an onshore conventional oil and gas project in Nigeria's Niger Delta,operated by ANOH Gas Processing Company. The unitized development spans OML 21 and OML 53 and is commonly referred to as ANOH. Discovered in 1992,the project reached final investment decision in 2019 and achieved first gas in January 2026,currently in ramp-up phase.</p>
<h2>Quick Facts</h2>
<table>
<tbody>
<tr><th>Item</th><th>Details</th></tr>
<tr><td>Project Name</td><td>Assa North-Ohaji South Oil and Gas Project (Nigeria)</td></tr>
<tr><td>Country</td><td>Nigeria</td></tr>
<tr><td>Fuel Type</td><td>Oil and gas</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>2026</td></tr>
<tr><td>Operator</td><td>ANOH Gas Processing Company</td></tr>
<tr><td>Discovery Year</td><td>1992</td></tr>
<tr><td>FID Year</td><td>2019</td></tr>
<tr><td>Production Start Year</td><td>2026</td></tr>
<tr><td>Onshore/Offshore</td><td>Onshore</td></tr>
<tr><td>Block(s)</td><td>OML 21; OML 21 (Assa North); OML 53; OML 53 (Ohaji South)</td></tr>
</tbody>
</table>
<h2>Project Overview</h2>
<p>The project consists of two unitized gas fields: Assa North in OML 21 and Ohaji South in OML 53. The fields supply wet gas to the ANOH gas processing plant. The development is located in Imo State,near Owerri,approximately 70 km northwest of Port Harcourt. It is designed to process condensate-rich gas for Nigeria's domestic and industrial gas market.</p>
<h2>Operator and Ownership</h2>
<p>ANOH Gas Processing Company (AGPC) operates the project. AGPC is an incorporated joint venture between Seplat Energy and Nigerian Gas Infrastructure Company,with Seplat holding 50% equity. The upstream fields have separate operators: Shell Petroleum Development Company operates Assa North in OML 21,and Seplat Energy operates Ohaji South in OML 53.</p>
<h2>Development History</h2>
<p>The fields were discovered in 1992. A final investment decision was taken in 2019. The ANOH gas plant reached mechanical completion on 29 December 2023. First gas was achieved in January 2026,after four upstream wells were brought online to supply the gas processing facility. The project is currently in ramp-up,with throughput expected to increase toward design capacity.</p>
<h2>Infrastructure and Facilities</h2>
<p>The ANOH gas plant includes two 150 MMscfd gas processing units,LPG recovery units,condensate stabilization units,a 16 MW power plant,and supporting facilities. The plant is designed for zero routine flaring. Upstream wells supply gas from the unitized field; four wells were brought online for first gas. Gas is exported via an 11 km pipeline to the Indorama Petrochemical Plant. An associated-gas compressor station at Ohaji South,designed to recover up to 10 MMscfd,reached mechanical completion and will supply additional feedstock to the ANOH plant.</p>
<h2>Production and Reserves</h2>
<p>Seplat Energy has reported a condensate-rich gas resource base of an estimated 4.6 Tcf across the unitized field,with Seplat's working-interest 2P reserves of 0.8 Tcf as of year-end 2024. Initial production after first gas in January 2026 stabilized at 40–52 MMscfd of processed wet gas delivered to Indorama,plus 2,000–2,500 barrels of oil equivalent per day of condensate. The plant design capacity is 300 MMscfd (two 150 MMscfd trains).</p>
<h2>Recent Developments</h2>
<p>First gas in January 2026 marks the transition from construction to operating ramp-up. Initial delivery to Indorama Petrochemical Plant began. The Ohaji South associated-gas compressor station reached mechanical completion,supporting the project's role in routine flaring reduction and additional feedgas supply.</p>
<h2>Related Topics</h2>
<ul>
<li>ANOH Gas Processing Company</li>
<li>Assa North Oil and Gas Field</li>
<li>Ohaji South Oil and Gas Field</li>
<li>OML 21 and OML 53</li>
<li>Seplat Energy gas projects</li>
<li>Nigeria domestic gas supply</li>
<li>Indorama gas supply</li>
<li>Gas processing and LPG recovery</li>
<li>Routine flaring reduction in Nigeria</li>
<li>Niger Delta onshore gas development</li>
</ul>
<h2>Sources</h2>
<ul>
<li><a href="https://www.gem.wiki/Assa_North-Ohaji_South_Oil_and_Gas_Project_(Nigeria)" rel="nofollow noopener" target="_blank">Global Energy Monitor: Assa North-Ohaji South Oil and Gas Project (Nigeria)</a></li>
<li><a href="https://www.gem.wiki/Assa_North_Oil_and_Gas_Field_(Nigeria)" rel="nofollow noopener" target="_blank">Global Energy Monitor: Assa North Oil and Gas Field (Nigeria)</a></li>
<li><a href="https://www.gem.wiki/Ohaji_South_Oil_and_Gas_Field_(Nigeria)" rel="nofollow noopener" target="_blank">Global Energy Monitor: Ohaji South Oil and Gas Field (Nigeria)</a></li>
<li><a href="https://anohgas.com/anoh-field/" rel="nofollow noopener" target="_blank">ANOH Gas Processing Company: ANOH Field</a></li>
<li><a href="https://anohgas.com/operations/" rel="nofollow noopener" target="_blank">ANOH Gas Processing Company: Operations</a></li>
<li><a href="https://www.seplatenergy.com/our-company/our-operations/midstream-gas/anoh-gas-processing-plant/" rel="nofollow noopener" target="_blank">Seplat Energy: ANOH Gas Processing Plant</a></li>
<li><a href="https://www.londonstockexchange.com/news-article/SEPL/anoh-gas-project-achieves-first-gas/17420962" rel="nofollow noopener" target="_blank">London Stock Exchange: Seplat Energy ANOH Gas Project Achieves First Gas</a></li>
<li><a href="https://tools.euroland.com/tools/PressReleases/GetPressRelease/?ID=7876349&companycode=services&lang=en-GB" rel="nofollow noopener" target="_blank">Euroland: Seplat Energy ANOH Gas Project Achieves First Gas</a></li>
<li><a href="https://drillingcontractor.org/seplats-anoh-project-achieves-first-gas-in-nigeria-76517" rel="nofollow noopener" target="_blank">Drilling Contractor: Seplat's ANOH project achieves first gas in Nigeria</a></li>
<li><a href="https://www.enerdata.net/publications/daily-energy-news/seplat-produces-first-gas-31-bcmyear-anoh-gas-plant-nigeria.html" rel="nofollow noopener" target="_blank">Enerdata: Seplat produces first gas from ANOH gas plant in Nigeria</a></li>
<li><a href="https://www.seplatenergy.com/our-company/our-operations/upstream/oml-53/" rel="nofollow noopener" target="_blank">Seplat Energy: OML 53 operations</a></li>
<li><a href="https://decadeofgas.com.ng/news/8/major-boost-for-domestic-supply-as-seplat-achieves-mechanical-completion-of-650m-anoh-gas-plant" rel="nofollow noopener" target="_blank">Decade of Gas: Seplat achieves mechanical completion of ANOH gas plant</a></li>
<li><a href="https://spacesforchange.org/new-report-benefit-sharing-negotiations-between-host-communities-and-extractive-companies-a-case-study-of-assa-north-ohaji-south-anoh-gas-development-project/" rel="nofollow noopener" target="_blank">Spaces for Change: Case study of Assa North-Ohaji South gas development project</a></li>
</ul>

IEPTC reference profile for Assa North - Ohaji South Oil and Gas in Nigeria,covering asset type,location,development status,and upstream industry context.

Assa North - Ohaji South Oil and Gas Project,Nigeria

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Assa North - Ohaji South Oil and Gas Project,Nigeria

Assa North - Ohaji South Oil and Gas Project,Nigeria

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