Melbana Energy is poised to resume 100% ownership of its Cuban Block 9 after its partner Sonangol defaulted on US$23.5 million in cash calls. Fresh seismic data and well results have refined reservoir understanding, derisking future drilling plans.
- Sonangol defaults on US$23.5 million payments, triggering ownership reversion
- New seismic data reveals subsurface misinterpretation affecting Amistad-2 well
- Amistad-1 well producing unassisted oil, validating redrill plans
- Planned 3D seismic survey to guide efficient resource extraction
- Recovery options for owed funds under legal review
Ownership Shift Following Partner Default
Melbana Energy Limited (ASX:MAY) is on track to reclaim full ownership of the Block 9 Production Sharing Contract (PSC) in Cuba after its joint venture partner, Sonangol, failed to meet cash calls totalling US$23.5 million. Having issued default notices earlier this year, Melbana’s wholly owned subsidiary has now formally deemed Sonangol to have withdrawn from the project. Regulatory approval is pending to transfer Sonangol’s 70% interest back to Melbana, which currently holds 30% and operates the PSC.
This development follows a series of funding issues that have delayed drilling programs, notably the Amistad-11 well, which has been on hold due to Sonangol’s non-payment. Melbana’s recent quarterly report highlighted ongoing production from the Alameda-2 well and continued seismic processing efforts despite the funding impasse modest crude production from the Alameda-2 well.
Seismic Data Reframes Reservoir Understanding
The latest seismic acquisition and analysis have been pivotal in explaining why the Amistad-2 well, despite optimal positioning and design, failed to produce meaningful oil volumes. Melbana’s studies suggest a critical subsurface misinterpretation caused the well trajectory to intersect a detachment and forelimb that breached the surface, allowing hydrocarbons to migrate away. This insight stems from newly acquired 2D seismic lines that reveal faults acting as seals, contrasting with legacy data that was limited and of poor quality.
Importantly, the seismic data also contextualises the success of the Amistad-1 (Alameda-2) well, which delivered 625 metres of net pay and stabilised flow rates averaging 1,235 barrels of oil per day. The well continues to produce oil unassisted at about 20 barrels per day, validating plans to redrill nearby. Melbana plans to leverage its cost-effective seismic capabilities to conduct a small 3D survey targeting the shallow carbonate reservoir along the anticlinal ridge, aiming to efficiently drain the high-confidence contingent resource.
Operational and Financial Implications
While Melbana maintains minimal site supervision and production operations pending the regulatory approval of full ownership, the company acknowledges the strategic value of the significant onshore Cuban oilfield. Executive Chairman Andrew Purcell emphasised the reservoir model improvements and the role of 3D seismic in derisking future wells. The company is also reviewing legal and commercial options to recover the US$23.5 million owed by Sonangol, though the timing and outcome remain uncertain.
The unfolding situation highlights the challenges of joint ventures in politically complex regions and the importance of reliable partners. Melbana’s ability to continue seismic work and maintain production at Amistad-1 underlines a pragmatic approach to managing operational risks while preparing for a more assertive drilling campaign once full ownership is secured.
Bottom Line?
Melbana’s path to full control of Block 9 hinges on regulatory approval and legal recovery of partner debts, with seismic advances shaping future drilling strategies.
Questions in the middle?
- How swiftly will Cuban regulators approve the transfer of Sonangol’s interest back to Melbana?
- What are Melbana’s realistic prospects for recovering the US$23.5 million owed by Sonangol?
- Will the planned 3D seismic survey materially improve drilling success and resource extraction efficiency?