Carnarvon Energy Secures Transocean Equinox Rig for 2027 Bedout Drilling, Reports 92% Surge in Prospective Resources

Transocean Equinox Rig Selection Finalizes Year-Long Bidding for 2027 Bedout Drilling Campaign

Carnarvon Energy has confirmed the selection of the Transocean Equinox semi-submersible mobile offshore drilling unit after an extensive bid evaluation process initiated in early 2025. This rig selection marks a significant milestone in advancing the company’s exploration strategy in the Bedout Sub-basin, with drilling scheduled to commence in April 2027. Currently, the Transocean Equinox is engaged in a multi-well exploration campaign off Victoria’s coast, expected to conclude by early next year, enabling its mobilisation to Carnarvon’s Bedout permits.

The drilling program will include one firm well and one contingent well within Carnarvon’s exploration permits, with an anticipated total cost of around A$20 million. This expenditure will be funded entirely from Carnarvon’s current cash reserves, maintaining capital flexibility for future development initiatives. The rig selection followed thorough technical and commercial assessments, reflecting the company’s disciplined capital allocation in one of Australia’s most promising offshore regions.

Bedout MegaMerge Seismic Reprocessing Yields 92% Growth in Prospective Resource Estimates

In the quarter ending 30 June 2026, Carnarvon Energy completed interpretation of the Bedout MegaMerge seismic reprocessing project, resulting in a transformative 92% increase in prospective resource estimates across its Bedout Sub-basin permits. Gross prospective resources now stand at 6,256 million barrels of oil equivalent (mmboe) (gross, unrisked Pmean) across 130 prospects, a significant rise from 3,263 mmboe reported in June 2025. Carnarvon’s net prospective resource is 1,021 mmboe (unrisked Pmean), reflecting its 10–20% working interest across four exploration permits in the sub-basin.

This substantial resource upgrade stems from enhanced subsurface imaging achieved by integrating multiple high-quality 3D seismic surveys in the MegaMerge dataset. This project culminates over a decade of 3D seismic acquisition in the Bedout Sub-basin, markedly improving prospect definition and confidence. The Bedout Joint Venture has attained a 67% exploration success rate to date, supported by this high-quality seismic data. Despite only six wells drilled on modern 3D data, four discoveries have been made, underscoring the basin’s exceptional strike rate and underexplored potential.

Ara Prospect Identified as Firm Well Target with Significant Upside Across Northern Acreage

The primary firm well target for the 2027 campaign is the Ara prospect, serving as a play-opening test to determine if the oil success seen at Dorado and Pavo extends into northern Carnarvon acreage, approximately 80 kilometres away. Ara holds estimated prospective resources close to 200 million barrels of oil equivalent (gross, unrisked Pmean) and offers a success probability better than 1-in-3, making it a compelling exploration target. Success at Ara would substantially de-risk the Yuma prospect, which shares similar play characteristics and is considered the contingent well candidate for 2027.

Ara’s significance extends beyond its resource potential; a discovery here could de-risk a large portion of Carnarvon’s exploration portfolio, which includes roughly 130 prospects with over 3 billion barrels of prospective oil equivalent (gross, unrisked Pmean). The four prospects shortlisted for the 2027 campaign—Ara, Yuma, Goats Eye, and Hutton—represent about 14% of the risked portfolio and contain approximately 851 mmboe (gross, unrisked Pmean). Success on any would meaningfully reduce risk across numerous analogous prospects basin-wide.

Exploration Expansion into Late Permian Carbonate Play via Hutton and Goats Eye Contingent Wells

Alternative contingent well targets under review include the Hutton and Goats Eye prospects, which explore the untested Late Permian carbonate play system within the Bedout Sub-basin. Success here would unlock a new exploration fairway across permit WA-436-P, which holds a significant portion of the basin’s mapped prospective resources. These prospects are key to expanding Carnarvon’s play concept portfolio and methodically de-risking additional basin fairways during the 2027 drilling campaign.

The Bedout MegaMerge seismic reprocessing has materially enhanced prospect definition for Hutton and Goats Eye, improving subsurface imaging and structural clarity. Carnarvon’s strategy of evaluating multiple contingent well options reflects a disciplined approach to maximising learning from the drilling campaign while retaining flexibility to adapt to new technical data. The Late Permian carbonate play remains largely unexplored despite its mapped potential, representing a genuine frontier within Carnarvon’s Bedout portfolio.

Dorado Development Project Maintains Solid Financials and Strategic Energy Security Importance

The Dorado oil and gas field, located about 150 kilometres offshore from Port Hedland, Western Australia, at a water depth near 90 metres, is among Australia’s most significant undeveloped oil discoveries. Carnarvon holds a 10% working interest, with Santos operating and owning 80%. Port Hedland is a vital fuel import hub for Western Australia’s iron ore mining sector, handling 1.5 to 2 billion litres of diesel imports annually, highlighting the regional energy supply’s strategic importance.

A preliminary development plan for Dorado outlines a staged approach beginning with liquids production (Phase 1), followed by potential gas export (Phase 2). The Phase 1 concept, refined in 2024, involves a single wellhead platform supporting up to twelve wells tied back to a Floating Production Storage and Offloading (FPSO) vessel. Recent geopolitical developments and heightened focus on energy security have increased Dorado’s strategic relevance. Carnarvon describes Dorado as a high-quality, liquids-rich project poised to enhance Australia’s oil supply security.

Carnarvon’s Strong Balance Sheet Supports Exploration Funding Without Impacting Development Capital

As of 30 June 2026, Carnarvon Energy reported A$98 million in cash and zero debt. The company also benefits from a US$90 million development carry for the Dorado project, triggered upon Final Investment Decision (FID). This financial setup enables funding of the 2027 Bedout exploration campaign while preserving capital for future development and maintaining flexibility for opportunistic investments.

The combination of cash reserves and the development carry underscores Carnarvon’s access to capital despite the capital-intensive nature of offshore exploration and development. Management has indicated the company can comfortably finance the approximately A$20 million exploration program while retaining funds for future projects. This financial strength is a competitive advantage as Carnarvon advances exploration and development activities in the Bedout Sub-basin and Dorado project. The company’s debt-free status and strong cash position reflect prudent capital management, positioning it to manage potential cost increases or technical challenges.

Bedout Sub-Basin Geological Framework Highlights Exceptional Exploration Potential Relative to Drilling Activity

The Bedout Sub-basin offshore Western Australia remains one of the country’s most prospective and technically advanced exploration regions. Despite over a decade of extensive 3D seismic acquisition, drilling activity remains limited. Only six wells have been drilled on modern 3D data, yet four discoveries have been made, resulting in a 67% exploration success rate for the Bedout Joint Venture. This outstanding strike rate relative to limited drilling highlights significant upside for systematic exploration across the basin’s extensive prospect portfolio.

The Bedout MegaMerge seismic reprocessing project has significantly enhanced subsurface imaging by integrating multiple high-quality surveys, enabling the 92% increase in prospective resource estimates announced this quarter. Carnarvon’s strategy of leveraging advanced seismic reprocessing to refine prospect definitions prior to drilling exemplifies industry-standard risk management. The resulting gross prospective resource base of 6,256 mmboe across 130 prospects confirms the basin’s under-exploration relative to its resource potential. This technical foundation supports confidence in the 2027 drilling targets and the broader exploration portfolio, which stands to benefit from successful appraisal of key play concepts.

Strategic Focus of 2027 Drilling Campaign Balances Exploration Risk and Portfolio De-Risking

The 2027 Bedout drilling campaign aims to fulfill multiple strategic objectives within Carnarvon’s exploration program. The primary firm well at Ara serves as a play-opening test that, if successful, would significantly de-risk the Yuma prospect and establish a new production fairway approximately 80 kilometres north of Dorado and Pavo discoveries. Contingent well options provide flexibility to target either additional extensions of the Ara play via Yuma or test the new Late Permian carbonate system via Hutton or Goats Eye. This portfolio approach balances focused testing of high-conviction targets with strategic optionality to expand play concepts and reduce risk across the basin.

The company’s CEO described the Ara prospect as "a genuine play-opening test" with major de-risking implications for the broader portfolio. A discovery at Ara would validate a new hydrocarbon system and enable systematic appraisal of analogous prospects across northern acreage. The four shortlisted prospects represent only 14% of the risked portfolio, but successful drilling could have outsized de-risking effects across the remaining 130 prospects. This risk management framework aims to maximise learning from the 2027 drilling program while maintaining capital discipline and targeting the highest upside opportunities.

Regulatory Permits and Operational Schedule Align Bedout Campaign Within Multi-Year Development Plan

Carnarvon’s Bedout Sub-basin exploration occurs within permits WA-435, 436, 437, and 438-P, where Santos operates the joint venture and Carnarvon holds a 10–20% working interest. The company confirmed drilling will begin in April 2027 after the Transocean Equinox completes its current operations off Victoria. This start date provides a clear timeline for technical preparations, well planning, environmental approvals, and logistics.

The 2027 Bedout campaign fits within a broader multi-year schedule that includes ongoing Dorado development planning, currently in preliminary phases with Phase 1 focusing on FPSO-based liquids production. Carnarvon’s ability to conduct exploration drilling while advancing development planning demonstrates strong organisational capacity and financial resources. The sequential staging of Bedout exploration and Dorado development, supported by the US$90 million development carry triggered at FID, offers a structured capital deployment pathway aligned with technical milestones and market conditions.