Perenco T&T Limited has announced the successful drilling of the Onyx well and sidetrack in the eastern part of the Onyx field. The two legs encountered significant columns of natural gas in two separate geological compartments.
The Onyx field is an undeveloped gas discovery located within the TSP license, in a water depth of 180 ft, between the Poui and Teak fields, off Trinidad’s south-east coast. TSP is a joint venture between Perenco T&T Limited, the Operator, Heritage Petroleum Company Limited and The National Gas Company of Trinidad and Tobago Limited.
The subsurface information is currently under review and development options will be evaluated to move the discovery towards final investment decision (FID).
Perenco T&T’s General Manager Gregoire de Courcelles said, “I am very proud of the successful results of the Onyx wells. Our objective was to prove sufficient gas reserves to unlock field development. The wells’ findings are testimony to the hydrocarbon potential which remains in the TSP acreage and highlights Perenco’s commitment to provide future supplies of natural gas to Trinidad and Tobago. I would like to thank our partners Heritage Petroleum and NGC for their unwavering support in this project and congratulate all teams involved in completing this operation safely and efficiently.”
This drilling success is a major milestone in Perenco’s vision for Trinidad and Tobago as it increases its footprint in the country and becomes a major gas supplier to the local market.
Perenco has been producing hydrocarbons in Trinidad & Tobago since 2016, when it took over operatorship of the Teak, Samaan and Poui (TSP) fields, located offshore the south-east coast of Trinidad. At inception, Perenco launched a complete modernisation plan to fully electrify the TSP asset and increase its gas production, shifting towards more efficient and sustainable hydrocarbon production.
In December 2024, Perenco expanded its operations in T&T with the acquisition of the Cashima, Amherstia, Flamboyant & Immortelle (CAFI) gas producing assets and recently, on 28th March 2025, the company signed an agreement to acquire the participating interests of Woodside Energy in Blocks 2c and 3a (Greater Angostura), which is progressing towards completion.
Perenco commits to conducting safe and sustainable operations, while working closely with the local energy sector and communities to provide a positive social impact and promoting the development of a self-sustaining society. Perenco’s model extends beyond its core operations to include a sustainable and engaging Corporate Social Responsibility portfolio. Its CSR programmes in Trinidad and Tobago are heavily focused on literacy & education, as well as training & diversification of skills.
Perenco T&T is part of the Perenco Group, which operates in 14 partner countries.
.Photo: Valaris-249 jack-up drilling rig sailing to Chaguaramas after completion of drilling activities in Onyx, TSP