Cosmos Field
The Cosmos discovery is located approximately 45 km offshore northeastern Tunisia in the Gulf of Hammamet. Operated by ATOG with 80% working interest alongside ETAP (20%), the concession covers 440 km² and includes several fault blocks, led by the Cosmos South Field
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11.7 MMstb
Oil Recoverable : The estimated total volume of crude oil that can be commercially extracted from the reservoir, measured in million stock tank barrels.
12,000–15,000 bopd
Planned Initial Rate : The projected range of oil production expected during the initial phase of the project, measured in barrels of oil per day.
1983
Discovery Year : The calendar year in which the oil field was first successfully identified through exploration drilling.
120m
Water Depth : The distance from the water's surface to the seabed at the field location, indicating the type of offshore infrastructure required.
19.7 Bscf
Recoverable Gas : The total volume of natural gas reserves that are expected to be produced over the life of the project.
ATOG 80%, ETAP 20%
Working Interest : The percentage of ownership and financial responsibility held by each partner in the development.
440 km²
Concession Area : The total geographic surface area covered by the legal permit or contract for exploration and production activities.
16–18 MMscf
Gas Production Rate : The anticipated daily volume of natural gas production.
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Strategically Positioned for Growth
The Cosmos Concession is one of the key offshore developments of ATOG in Tunisia, strategically located in the highly prospective Gulf of Hammamet with direct access to established regional infrastructure. Its favorable offshore location provides strong operational advantages, enabling efficient development and cost-effective production while leveraging existing regional facilities and connectivity.
Supported by approved development plans and significant recoverable reserves, Cosmos South demonstrates strong commercial potential and attractive production economics. The project is expected to play an important role in supporting Tunisia’s future energy supply, contributing to the country’s energy security, economic growth, and long-term development of the offshore energy sector.
1983
Discovery Well
Cosmos South-1 successfully discovered hydrocarbons.
1984
Further Appraisal
Cosmos South-2 drilled to delineate field extent.
2026 Q2
Development Start
Three-well development campaign begins.
2027 Q1
First Oil & Gas
Initial production expected.
Why the Cosmos Field Matters
With approved development plans, strong recoverable reserves, and access to existing export infrastructure, Cosmos South represents a high-value offshore asset supporting long-term production growth for ATOG and Tunisia.
Safe Operations. Responsible Performance.
The Cosmos Field operates under ATOG's strong commitment to health, safety, environmental responsibility, and continuous operational improvement. Every stage of the field's operations is managed through strict standards, robust monitoring systems, and disciplined procedures designed to protect people, assets, and the surrounding marine environment.
Built on a foundation of reliability, accountability, and performance excellence, Cosmos Field maintains efficient production through carefully planned workflows, preventive maintenance programs, and advanced operational controls. Each activity is executed with precision to ensure consistent output while minimizing operational risk and maintaining the highest standards of integrity.
Safety remains central to every decision made across the field. Through regular inspections, workforce training, emergency preparedness, and proactive risk management, ATOG fosters a culture where safe practices are embedded into daily operations. This commitment ensures that personnel wellbeing, asset protection, and environmental stewardship remain priorities at all times.
By combining responsible decision-making with technical expertise and continuous improvement, Cosmos Field delivers sustainable performance that supports long-term energy supply and stakeholder confidence. The field stands as a reflection of ATOG's dedication to safe operations, responsible growth, and lasting operational success.
Development Plans
The approved development plan for the Cosmos South Field includes the drilling of three wells, comprising two production wells and one water injection well to optimize reservoir performance. Development operations will be carried out using the Zembra Mobile Offshore Drilling Unit (MODU), which will later be converted in-situ into a Mobile Offshore Production Unit (MOPU) for long-term field operations.
Produced hydrocarbons will be transferred to the nearby Djerba Floating Production Storage and Offloading (FPSO) vessel for processing and storage, while natural gas will be exported through a new 28 km pipeline connected to the existing Maamoura platform and onward to the Tazerka gas plant. This integrated offshore development strategy is designed to ensure efficient production, secure export capability, and long-term operational reliability.