Trinity Exploration & Production PLC is preparing for a production test after finding 'significant' hydrocarbons at high reservoir pressure in the Jacobin well sidetrack onshore Trinidad.
The Jacobin-1 well was spudded on May 15 with an objective to appraise and explore the potential of Lower Cruse sandstones within the Palo Seco area of the Southern basin.
Drilling samples, wireline logs, and pressure testing indicate that the well encountered significant reservoir and hydrocarbon accumulations in the Lower Forest, Upper Cruse, and Lower Cruse. The exploration section of the well encountered net reservoir thicknesses varying between 45 to 190 ft. An aggregate of 63 ft of net hydrocarbon pay was identified in the deeper exploration section of the well. Reservoir pressures appear to be high (up to 7,500 psi) and indicate virgin pressures. An additional 228 ft of net pay was previously found in the secondary target section (OGJ Online, July 13, 2023).
Data acquired from the well are being analyzed further through dynamic modeling to design an optimal completions strategy for the stacked pay encountered within the exploration section.
The well has been cased to 10,021 ft and is being prepared for a series of production tests that is likely to commence with the deepest oil-bearing reservoir, and first production is expected in September. This timeline is driven by the demobilization of the drilling rig from the site and installation of a heavy-duty workover rig to run the completion, perforate, and tie the well into production infrastructure.
The Jacobin results validate both the structural and stratigraphic model demonstrating the existence of a deeper turbidite play across Trinity's entire Palo Seco area and the recently awarded Buenos Ayres block, the company said. The integration of the onshore 3D seismic over the Lease Operatorship blocks purchased in 2021 has been key to the understanding of the sub-surface, Trinity continued.
Data from the well will now be used to de-risk and re-rank the remaining Hummingbird prospects across the Palo Seco blocks and those recently mapped within the Buenos Ayres block.
Trinity holds 100% interest in the Palo Seco area sub-licenses.